From 0888190efa24b61c9d44419e05cbab6e2d1fd12d Mon Sep 17 00:00:00 2001
From: huanghaiquan <huanghaiquan@jd.com>
Date: Wed, 19 Jun 2019 02:27:48 +0800
Subject: [PATCH] Completed the processing of the return value of Contract
 event send operation;

---
 .../com/jd/blockchain/consts/DataCodes.java   |   4 +-
 .../contract/engine/ContractCode.java         |   6 +-
 .../contract/jvm/AbstractContractCode.java    |   7 +-
 .../contract/jvm/JavaContractCode.java        |   7 +-
 .../ledger/core/OperationHandle.java          |   4 +-
 .../core/impl/TransactionBatchProcessor.java  |   4 +-
 .../handles/AbtractContractEventHandle.java   |   7 +-
 .../ContractCodeDeployOperationHandle.java    |  12 +-
 .../DataAccountKVSetOperationHandle.java      |   4 +-
 .../DataAccountRegisterOperationHandle.java   |   8 +-
 .../handles/UserRegisterOperationHandle.java  |  11 +-
 .../ledger/ContractInvokingTest.java          |  10 +-
 .../contract/ContractSerializeUtils.java      | 301 +++++++------
 .../jd/blockchain/contract/ContractType.java  |  32 +-
 .../jd/blockchain/ledger/BytesValueList.java  |  11 +
 .../ledger/ContractEventSendOperation.java    |   7 -
 .../com/jd/blockchain/ledger/DataType.java    |  23 +-
 .../jd/blockchain/ledger/OperationResult.java |   8 +-
 .../ledger/OperationResultData.java           |   8 +-
 .../ledger/PreparedTransaction.java           |  24 +-
 .../BlockchainOperationFactory.java           |  90 ++--
 .../ContractEventSendOpTemplate.java          |  55 +--
 .../ContractEventSendOperationBuilder.java    |  26 +-
 .../transaction/ContractInvocation.java       |  66 +++
 .../ContractInvocationHandler.java            | 109 +++++
 .../transaction/ContractInvocationProxy.java  | 110 -----
 .../ContractInvocationProxyBuilder.java       |  52 ++-
 .../transaction/ContractInvocationStub.java   |  33 ++
 .../transaction/ContractReturns.java          | 418 ++++++++++++++++++
 .../blockchain/transaction/EventOperator.java |  23 +-
 .../OperationReturnValueHandler.java          |  11 +
 .../jd/blockchain/transaction/PreparedTx.java |  80 ++--
 .../jd/blockchain/transaction/TxBuilder.java  |  17 +-
 .../transaction/TxRequestBuilder.java         |   3 +-
 .../jd/blockchain/transaction/TxTemplate.java |  22 +-
 .../sdk/samples/SDK_Contract_Demo.java        | 303 +++++++------
 .../sdk/test/SDKDemo_Contract_Test.java       | 282 ++++++------
 .../jd/blockchain/intgr/IntegrationBase.java  |  35 +-
 .../handler/MockerContractExeHandle.java      |   8 +-
 39 files changed, 1366 insertions(+), 875 deletions(-)
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/BytesValueList.java
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocation.java
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationHandler.java
 delete mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxy.java
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationStub.java
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractReturns.java
 create mode 100644 source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/OperationReturnValueHandler.java

diff --git a/source/base/src/main/java/com/jd/blockchain/consts/DataCodes.java b/source/base/src/main/java/com/jd/blockchain/consts/DataCodes.java
index 39850af6..e764c3f3 100644
--- a/source/base/src/main/java/com/jd/blockchain/consts/DataCodes.java
+++ b/source/base/src/main/java/com/jd/blockchain/consts/DataCodes.java
@@ -9,6 +9,8 @@ package com.jd.blockchain.consts;
 public interface DataCodes {
 
 	public static final int BYTES_VALUE = 0x80;
+	
+	public static final int BYTES_VALUE_LIST = 0x81;
 
 	public static final int BLOCK_CHAIN_IDENTITY = 0x90;
 
@@ -16,8 +18,6 @@ public interface DataCodes {
 
 	public static final int BLOCK_BODY = 0x110;
 
-	// public static final int BLOCK_LEDGER = 0x110;
-
 	public static final int BLOCK_GENESIS = 0x120;
 
 	public static final int DATA_SNAPSHOT = 0x130;
diff --git a/source/contract/contract-framework/src/main/java/com/jd/blockchain/contract/engine/ContractCode.java b/source/contract/contract-framework/src/main/java/com/jd/blockchain/contract/engine/ContractCode.java
index 962c767d..2f363a55 100644
--- a/source/contract/contract-framework/src/main/java/com/jd/blockchain/contract/engine/ContractCode.java
+++ b/source/contract/contract-framework/src/main/java/com/jd/blockchain/contract/engine/ContractCode.java
@@ -1,16 +1,14 @@
 package com.jd.blockchain.contract.engine;
 
 import com.jd.blockchain.contract.ContractEventContext;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.utils.Bytes;
 
-import java.util.concurrent.CompletableFuture;
-import java.util.concurrent.Future;
-
 public interface ContractCode {
 
 	Bytes getAddress();
 	
 	long getVersion();
 
-	byte[] processEvent(ContractEventContext eventContext);
+	BytesValue processEvent(ContractEventContext eventContext);
 }
diff --git a/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/AbstractContractCode.java b/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/AbstractContractCode.java
index 53aec345..3dfc4c58 100644
--- a/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/AbstractContractCode.java
+++ b/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/AbstractContractCode.java
@@ -10,6 +10,7 @@ import com.jd.blockchain.contract.ContractEventContext;
 import com.jd.blockchain.contract.ContractException;
 import com.jd.blockchain.contract.EventProcessingAware;
 import com.jd.blockchain.contract.engine.ContractCode;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.utils.Bytes;
 
 /**
@@ -44,7 +45,7 @@ public abstract class AbstractContractCode implements ContractCode {
 	}
 
 	@Override
-	public byte[] processEvent(ContractEventContext eventContext) {
+	public BytesValue processEvent(ContractEventContext eventContext) {
 		EventProcessingAware evtProcAwire = null;
 		Object retn = null;
 		Exception error = null;
@@ -90,13 +91,13 @@ public abstract class AbstractContractCode implements ContractCode {
 					eventContext.getEvent(), address.toString(), error.getMessage()), error);
 		}
 
-		byte[] retnBytes = resolveResult(retn);
+		BytesValue retnBytes = resolveResult(retn);
 		return retnBytes;
 	}
 
 	protected abstract Object getContractInstance();
 
-	private byte[] resolveResult(Object retn) {
+	private BytesValue resolveResult(Object retn) {
 		if (retn == null) {
 			return null;
 		}
diff --git a/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/JavaContractCode.java b/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/JavaContractCode.java
index 20f97863..c6b7c5b9 100644
--- a/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/JavaContractCode.java
+++ b/source/contract/contract-jvm/src/main/java/com/jd/blockchain/contract/jvm/JavaContractCode.java
@@ -9,6 +9,7 @@ import com.jd.blockchain.contract.Contract;
 import com.jd.blockchain.contract.ContractEventContext;
 import com.jd.blockchain.contract.ContractException;
 import com.jd.blockchain.contract.ContractType;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.runtime.Module;
 import com.jd.blockchain.utils.Bytes;
 
@@ -65,7 +66,7 @@ public class JavaContractCode extends AbstractContractCode {
 	}
 
 	@Override
-	public byte[] processEvent(ContractEventContext eventContext) {
+	public BytesValue processEvent(ContractEventContext eventContext) {
 		if (LOGGER.isDebugEnabled()) {
 			LOGGER.debug("Start processing event[%s] of contract[%s]...", eventContext.getEvent(), address.toString());
 		}
@@ -91,7 +92,7 @@ public class JavaContractCode extends AbstractContractCode {
 		}
 	}
 
-	private class ContractExecution implements Callable<byte[]> {
+	private class ContractExecution implements Callable<BytesValue> {
 		private ContractEventContext eventContext;
 
 		public ContractExecution(ContractEventContext contractEventContext) {
@@ -99,7 +100,7 @@ public class JavaContractCode extends AbstractContractCode {
 		}
 
 		@Override
-		public byte[] call() throws Exception {
+		public BytesValue call() throws Exception {
 			return JavaContractCode.super.processEvent(eventContext);
 		}
 	}
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/OperationHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/OperationHandle.java
index 2a13690b..e1a0f567 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/OperationHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/OperationHandle.java
@@ -1,8 +1,8 @@
 package com.jd.blockchain.ledger.core;
 
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.Operation;
 import com.jd.blockchain.ledger.core.impl.OperationHandleContext;
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
 
 
 public interface OperationHandle {
@@ -30,7 +30,7 @@ public interface OperationHandle {
 	 *
 	 * @return 操作执行结果
 	 */
-	byte[] process(Operation op, LedgerDataSet newBlockDataset, TransactionRequestContext requestContext,
+	BytesValue process(Operation op, LedgerDataSet newBlockDataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService);
 
 //	/**
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/TransactionBatchProcessor.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/TransactionBatchProcessor.java
index bfb8a08d..b4795c01 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/TransactionBatchProcessor.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/TransactionBatchProcessor.java
@@ -8,7 +8,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.jd.blockchain.crypto.HashDigest;
-import com.jd.blockchain.ledger.ContractEventSendOperation;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.LedgerBlock;
 import com.jd.blockchain.ledger.LedgerException;
 import com.jd.blockchain.ledger.Operation;
@@ -110,7 +110,7 @@ public class TransactionBatchProcessor implements TransactionBatchProcess {
 			int opIndex = 0;
 			for (Operation op : ops) {
 				opHandle = opHandles.getHandle(op.getClass());
-				byte[] opResult = opHandle.process(op, dataset, reqCtx, previousBlockDataset, handleContext, ledgerService);
+				BytesValue opResult = opHandle.process(op, dataset, reqCtx, previousBlockDataset, handleContext, ledgerService);
 				if (opResult != null) {
 					operationResults.add(new OperationResultData(opIndex, opResult));
 				}
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/AbtractContractEventHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/AbtractContractEventHandle.java
index 56a24db1..40f6e2c2 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/AbtractContractEventHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/AbtractContractEventHandle.java
@@ -1,13 +1,10 @@
 package com.jd.blockchain.ledger.core.impl.handles;
 
-import static com.jd.blockchain.utils.BaseConstant.CONTRACT_SERVICE_PROVIDER;
-
 import org.springframework.stereotype.Service;
 
 import com.jd.blockchain.contract.LocalContractEventContext;
 import com.jd.blockchain.contract.engine.ContractCode;
-import com.jd.blockchain.contract.engine.ContractEngine;
-import com.jd.blockchain.contract.engine.ContractServiceProviders;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.ContractEventSendOperation;
 import com.jd.blockchain.ledger.LedgerException;
 import com.jd.blockchain.ledger.Operation;
@@ -29,7 +26,7 @@ public abstract class AbtractContractEventHandle implements OperationHandle {
 	}
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext opHandleContext, LedgerService ledgerService) {
 		ContractEventSendOperation contractOP = (ContractEventSendOperation) op;
 		// 先从账本校验合约的有效性；
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/ContractCodeDeployOperationHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/ContractCodeDeployOperationHandle.java
index a71b26d1..e18c9304 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/ContractCodeDeployOperationHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/ContractCodeDeployOperationHandle.java
@@ -1,6 +1,8 @@
 package com.jd.blockchain.ledger.core.impl.handles;
 
-import com.jd.blockchain.binaryproto.BinaryProtocol;
+import org.springframework.stereotype.Service;
+
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.ContractCodeDeployOperation;
 import com.jd.blockchain.ledger.Operation;
 import com.jd.blockchain.ledger.core.LedgerDataSet;
@@ -9,17 +11,11 @@ import com.jd.blockchain.ledger.core.OperationHandle;
 import com.jd.blockchain.ledger.core.TransactionRequestContext;
 import com.jd.blockchain.ledger.core.impl.OperationHandleContext;
 
-import com.jd.blockchain.utils.Bytes;
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
-import org.springframework.stereotype.Service;
-
-import java.util.concurrent.Future;
-
 @Service
 public class ContractCodeDeployOperationHandle implements OperationHandle {
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
 		ContractCodeDeployOperation contractOP = (ContractCodeDeployOperation) op;
 		// TODO: 校验合约代码的正确性；
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountKVSetOperationHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountKVSetOperationHandle.java
index 9844d4c6..c07dd628 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountKVSetOperationHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountKVSetOperationHandle.java
@@ -1,7 +1,5 @@
 package com.jd.blockchain.ledger.core.impl.handles;
 
-import com.jd.blockchain.binaryproto.BinaryProtocol;
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
 import org.springframework.stereotype.Service;
 
 import com.jd.blockchain.binaryproto.DataContractRegistry;
@@ -24,7 +22,7 @@ public class DataAccountKVSetOperationHandle implements OperationHandle {
 	}
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
 		DataAccountKVSetOperation kvWriteOp = (DataAccountKVSetOperation) op;
 		DataAccount account = dataset.getDataAccountSet().getDataAccount(kvWriteOp.getAccountAddress());
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountRegisterOperationHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountRegisterOperationHandle.java
index 8bce4efd..69337dfa 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountRegisterOperationHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/DataAccountRegisterOperationHandle.java
@@ -1,6 +1,9 @@
 package com.jd.blockchain.ledger.core.impl.handles;
 
+import org.springframework.stereotype.Service;
+
 import com.jd.blockchain.ledger.BlockchainIdentity;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.DataAccountRegisterOperation;
 import com.jd.blockchain.ledger.Operation;
 import com.jd.blockchain.ledger.core.LedgerDataSet;
@@ -9,14 +12,11 @@ import com.jd.blockchain.ledger.core.OperationHandle;
 import com.jd.blockchain.ledger.core.TransactionRequestContext;
 import com.jd.blockchain.ledger.core.impl.OperationHandleContext;
 
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
-import org.springframework.stereotype.Service;
-
 @Service
 public class DataAccountRegisterOperationHandle implements OperationHandle {
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
 		DataAccountRegisterOperation dataAccountRegOp = (DataAccountRegisterOperation) op;
 		BlockchainIdentity bid = dataAccountRegOp.getAccountID();
diff --git a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/UserRegisterOperationHandle.java b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/UserRegisterOperationHandle.java
index d4072aa7..f583e8cd 100644
--- a/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/UserRegisterOperationHandle.java
+++ b/source/ledger/ledger-core/src/main/java/com/jd/blockchain/ledger/core/impl/handles/UserRegisterOperationHandle.java
@@ -1,6 +1,7 @@
 package com.jd.blockchain.ledger.core.impl.handles;
 
 import com.jd.blockchain.ledger.BlockchainIdentity;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.Operation;
 import com.jd.blockchain.ledger.UserRegisterOperation;
 import com.jd.blockchain.ledger.core.LedgerDataSet;
@@ -9,13 +10,12 @@ import com.jd.blockchain.ledger.core.OperationHandle;
 import com.jd.blockchain.ledger.core.TransactionRequestContext;
 import com.jd.blockchain.ledger.core.impl.OperationHandleContext;
 import com.jd.blockchain.utils.Bytes;
-import com.jd.blockchain.utils.concurrent.AsyncFuture;
 
 
 public class UserRegisterOperationHandle implements OperationHandle {
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
 
 
@@ -26,14 +26,9 @@ public class UserRegisterOperationHandle implements OperationHandle {
 
 		dataset.getUserAccountSet().register(userAddress, bid.getPubKey());
 
-		return userAddress.toBytes();
+		return null;
 	}
 
-//	@Override
-//	public AsyncFuture<byte[]> asyncProcess(Operation op, LedgerDataSet newBlockDataset, TransactionRequestContext requestContext, LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
-//		return null;
-//	}
-
 	@Override
 	public boolean support(Class<?> operationType) {
 		return UserRegisterOperation.class.isAssignableFrom(operationType);
diff --git a/source/ledger/ledger-core/src/test/java/test/com/jd/blockchain/ledger/ContractInvokingTest.java b/source/ledger/ledger-core/src/test/java/test/com/jd/blockchain/ledger/ContractInvokingTest.java
index 1f3fb3ed..27e234d0 100644
--- a/source/ledger/ledger-core/src/test/java/test/com/jd/blockchain/ledger/ContractInvokingTest.java
+++ b/source/ledger/ledger-core/src/test/java/test/com/jd/blockchain/ledger/ContractInvokingTest.java
@@ -120,8 +120,9 @@ public class ContractInvokingTest {
 		assertEquals(1, opResults.length);
 		assertEquals(0, opResults[0].getIndex());
 
-		byte[] retnBytes = BinaryProtocol.encode(BytesValueEntry.fromInt64(issueAmount), BytesValue.class);
-		assertArrayEquals(retnBytes, opResults[0].getResult());
+		byte[] expectedRetnBytes = BinaryProtocol.encode(BytesValueEntry.fromInt64(issueAmount), BytesValue.class);
+		byte[] reallyRetnBytes = BinaryProtocol.encode(opResults[0].getResult(), BytesValue.class);
+		assertArrayEquals(expectedRetnBytes, reallyRetnBytes);
 
 		// 提交区块；
 		TransactionBatchResultHandle txResultHandle = txbatchProcessor.prepare();
@@ -135,7 +136,10 @@ public class ContractInvokingTest {
 		// 再验证一次结果；
 		assertEquals(1, opResults.length);
 		assertEquals(0, opResults[0].getIndex());
-		assertArrayEquals(retnBytes, opResults[0].getResult());
+		
+		reallyRetnBytes = BinaryProtocol.encode(opResults[0].getResult(), BytesValue.class);
+		assertArrayEquals(expectedRetnBytes, reallyRetnBytes);
+
 	}
 
 	private HashDigest initLedger(MemoryKVStorage storage, BlockchainKeypair... partiKeys) {
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractSerializeUtils.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractSerializeUtils.java
index 6214c24e..0a637662 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractSerializeUtils.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractSerializeUtils.java
@@ -1,157 +1,164 @@
 package com.jd.blockchain.contract;
 
-import com.jd.blockchain.binaryproto.*;
-import com.jd.blockchain.contract.param.*;
-import com.jd.blockchain.utils.io.BytesUtils;
-
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
+import com.jd.blockchain.binaryproto.BinaryProtocol;
+import com.jd.blockchain.binaryproto.DataContract;
+import com.jd.blockchain.binaryproto.DataContractRegistry;
+import com.jd.blockchain.contract.param.WRAP_BYTES;
+import com.jd.blockchain.contract.param.WRAP_INT;
+import com.jd.blockchain.contract.param.WRAP_LONG;
+import com.jd.blockchain.contract.param.WRAP_SHORT;
+import com.jd.blockchain.contract.param.WRAP_STRING;
+import com.jd.blockchain.ledger.BytesValue;
+import com.jd.blockchain.utils.io.BytesUtils;
+
 public class ContractSerializeUtils {
 
-    final static int INT_LENGTH = 4;
-
-    static Map<Class<?>, Class<?>> MAP = new HashMap<>();
-
-    static {
-        MAP.put(byte[].class, WRAP_BYTES.class);
-        MAP.put(Short.class, WRAP_SHORT.class);
-        MAP.put(short.class, WRAP_SHORT.class);
-        MAP.put(Integer.class, WRAP_INT.class);
-        MAP.put(int.class, WRAP_INT.class);
-        MAP.put(Long.class, WRAP_LONG.class);
-        MAP.put(long.class, WRAP_LONG.class);
-        MAP.put(String.class, WRAP_STRING.class);
-
-        DataContractRegistry.register(WRAP_BYTES.class);
-        DataContractRegistry.register(WRAP_SHORT.class);
-        DataContractRegistry.register(WRAP_INT.class);
-        DataContractRegistry.register(WRAP_LONG.class);
-        DataContractRegistry.register(WRAP_STRING.class);
-    }
-
-    public static boolean support(Class<?> clazz) {
-        if (clazz.isAnnotationPresent(DataContract.class) || MAP.containsKey(clazz)) {
-            return true;
-        }
-        return false;
-    }
-
-    public static byte[] serialize(Object data) {
-
-        if (data == null) {
-            return null;
-        }
-
-        Class<?> clazz = data.getClass();
-        Class<?> serialClass;
-        Object wrapData = data;
-        if (clazz.isAnnotationPresent(DataContract.class)) {
-            serialClass = clazz;
-        } else {
-            // 判断类型是否可以序列化
-            Class<?> wrapClass = MAP.get(clazz);
-            if (wrapClass == null) {
-                throw new IllegalArgumentException("There are Un-Support Type !!!");
-            }
-            serialClass = wrapClass;
-
-            if (wrapClass.equals(WRAP_BYTES.class)) {
-                wrapData = (WRAP_BYTES) () -> (byte[])data;
-            } else if (wrapClass.equals(WRAP_INT.class)) {
-                wrapData = (WRAP_INT) () -> (int)data;
-            } else if (wrapClass.equals(WRAP_LONG.class)) {
-                wrapData = (WRAP_LONG) () -> (long)data;
-            } else if (wrapClass.equals(WRAP_SHORT.class)) {
-                wrapData = (WRAP_SHORT) () -> (short)data;
-            } else if (wrapClass.equals(WRAP_STRING.class)) {
-                wrapData = (WRAP_STRING) () -> (String)data;
-            }
-        }
-        // 按照对应接口进行序列化
-        // 生成该接口对应的对象
-        return BinaryProtocol.encode(wrapData, serialClass);
-    }
-
-    public static byte[] serializeArray(Object[] datas) {
-        if (datas == null || datas.length == 0) {
-            return null;
-        }
-        int contentBytesSize = 0;
-        byte[] header = new byte[(datas.length + 1) * 4];
-        System.arraycopy(BytesUtils.toBytes(datas.length), 0, header, 0, INT_LENGTH);
-        int offset = INT_LENGTH;
-
-        List<byte[]> serialBytesList = new ArrayList<>();
-        for (Object data : datas) {
-            // 按照对应接口进行序列化
-            byte[] currBytes = serialize(data);
-            // 长度写入
-            System.arraycopy(BytesUtils.toBytes(currBytes.length), 0, header, offset, INT_LENGTH);
-            serialBytesList.add(currBytes);
-            contentBytesSize += currBytes.length;
-            offset += INT_LENGTH;
-        }
-
-        // 填充content
-        byte[] content = new byte[contentBytesSize];
-        offset = 0;
-        for (byte[] bytes : serialBytesList) {
-            System.arraycopy(bytes, 0, content, offset, bytes.length);
-            offset += bytes.length;
-        }
-        // 将header和content组装
-        return BytesUtils.concat(header, content);
-    }
-
-    public static Object[] resolveArray(byte[] bytes) {
-        if (bytes == null || bytes.length == 0) {
-            return null;
-        }
-        byte[] lengthBytes = new byte[INT_LENGTH];
-        System.arraycopy(bytes, 0, lengthBytes, 0, INT_LENGTH);
-        int length = BytesUtils.toInt(lengthBytes);
-        Object[] datas = new Object[length];
-
-        int headerOffset = INT_LENGTH;
-        int contentStart = (length + 1) * INT_LENGTH;
-
-        for (int i = 0 ; i < length; i++) {
-            byte[] currDataLengthBytes = new byte[INT_LENGTH];
-            System.arraycopy(bytes, headerOffset, currDataLengthBytes, 0, INT_LENGTH);
-            int currDataLength = BytesUtils.toInt(currDataLengthBytes);
-            // 读取
-            byte[] dataBytes = new byte[currDataLength];
-            System.arraycopy(bytes, contentStart, dataBytes, 0, currDataLength);
-
-            datas[i] = resolve(dataBytes);
-
-            contentStart += currDataLength;
-            headerOffset += INT_LENGTH;
-        }
-
-        return datas;
-    }
-
-    public static Object resolve(byte[] bytes) {
-        // 反序列化该接口
-        Object currData = BinaryProtocol.decode(bytes);
-
-        // 代理对象类型不能使用class判断，只能使用instanceof
-        if (currData instanceof WRAP_STRING) {
-            return ((WRAP_STRING) currData).getValue();
-        } else if (currData instanceof WRAP_INT) {
-            return ((WRAP_INT) currData).getValue();
-        } else if (currData instanceof WRAP_LONG) {
-            return ((WRAP_LONG) currData).getValue();
-        } else if (currData instanceof WRAP_BYTES) {
-            return ((WRAP_BYTES) currData).getValue();
-        } else if (currData instanceof WRAP_SHORT) {
-            return ((WRAP_SHORT) currData).getValue();
-        } else {
-            return currData;
-        }
-    }
+	final static int INT_LENGTH = 4;
+
+	static Map<Class<?>, Class<?>> MAP = new HashMap<>();
+
+	static {
+		MAP.put(byte[].class, WRAP_BYTES.class);
+		MAP.put(Short.class, WRAP_SHORT.class);
+		MAP.put(short.class, WRAP_SHORT.class);
+		MAP.put(Integer.class, WRAP_INT.class);
+		MAP.put(int.class, WRAP_INT.class);
+		MAP.put(Long.class, WRAP_LONG.class);
+		MAP.put(long.class, WRAP_LONG.class);
+		MAP.put(String.class, WRAP_STRING.class);
+
+		DataContractRegistry.register(WRAP_BYTES.class);
+		DataContractRegistry.register(WRAP_SHORT.class);
+		DataContractRegistry.register(WRAP_INT.class);
+		DataContractRegistry.register(WRAP_LONG.class);
+		DataContractRegistry.register(WRAP_STRING.class);
+	}
+
+	public static boolean support(Class<?> clazz) {
+		if (clazz.isAnnotationPresent(DataContract.class) || MAP.containsKey(clazz)) {
+			return true;
+		}
+		return false;
+	}
+
+	public static BytesValue serialize(Object data) {
+
+		if (data == null) {
+			return null;
+		}
+
+		Class<?> clazz = data.getClass();
+		Class<?> serialClass;
+		Object wrapData = data;
+		if (clazz.isAnnotationPresent(DataContract.class)) {
+			serialClass = clazz;
+		} else {
+			// 判断类型是否可以序列化
+			Class<?> wrapClass = MAP.get(clazz);
+			if (wrapClass == null) {
+				throw new IllegalArgumentException("There are Un-Support Type !!!");
+			}
+			serialClass = wrapClass;
+
+			if (wrapClass.equals(WRAP_BYTES.class)) {
+				wrapData = (WRAP_BYTES) () -> (byte[]) data;
+			} else if (wrapClass.equals(WRAP_INT.class)) {
+				wrapData = (WRAP_INT) () -> (int) data;
+			} else if (wrapClass.equals(WRAP_LONG.class)) {
+				wrapData = (WRAP_LONG) () -> (long) data;
+			} else if (wrapClass.equals(WRAP_SHORT.class)) {
+				wrapData = (WRAP_SHORT) () -> (short) data;
+			} else if (wrapClass.equals(WRAP_STRING.class)) {
+				wrapData = (WRAP_STRING) () -> (String) data;
+			}
+		}
+		// 按照对应接口进行序列化
+		// 生成该接口对应的对象
+		return BinaryProtocol.encode(wrapData, serialClass);
+	}
+
+	public static byte[] serializeArray(Object[] datas) {
+		if (datas == null || datas.length == 0) {
+			return null;
+		}
+		int contentBytesSize = 0;
+		byte[] header = new byte[(datas.length + 1) * 4];
+		System.arraycopy(BytesUtils.toBytes(datas.length), 0, header, 0, INT_LENGTH);
+		int offset = INT_LENGTH;
+
+		List<byte[]> serialBytesList = new ArrayList<>();
+		for (Object data : datas) {
+			// 按照对应接口进行序列化
+			byte[] currBytes = serialize(data);
+			// 长度写入
+			System.arraycopy(BytesUtils.toBytes(currBytes.length), 0, header, offset, INT_LENGTH);
+			serialBytesList.add(currBytes);
+			contentBytesSize += currBytes.length;
+			offset += INT_LENGTH;
+		}
+
+		// 填充content
+		byte[] content = new byte[contentBytesSize];
+		offset = 0;
+		for (byte[] bytes : serialBytesList) {
+			System.arraycopy(bytes, 0, content, offset, bytes.length);
+			offset += bytes.length;
+		}
+		// 将header和content组装
+		return BytesUtils.concat(header, content);
+	}
+
+	public static Object[] resolveArray(byte[] bytes) {
+		if (bytes == null || bytes.length == 0) {
+			return null;
+		}
+		byte[] lengthBytes = new byte[INT_LENGTH];
+		System.arraycopy(bytes, 0, lengthBytes, 0, INT_LENGTH);
+		int length = BytesUtils.toInt(lengthBytes);
+		Object[] datas = new Object[length];
+
+		int headerOffset = INT_LENGTH;
+		int contentStart = (length + 1) * INT_LENGTH;
+
+		for (int i = 0; i < length; i++) {
+			byte[] currDataLengthBytes = new byte[INT_LENGTH];
+			System.arraycopy(bytes, headerOffset, currDataLengthBytes, 0, INT_LENGTH);
+			int currDataLength = BytesUtils.toInt(currDataLengthBytes);
+			// 读取
+			byte[] dataBytes = new byte[currDataLength];
+			System.arraycopy(bytes, contentStart, dataBytes, 0, currDataLength);
+
+			datas[i] = resolve(dataBytes);
+
+			contentStart += currDataLength;
+			headerOffset += INT_LENGTH;
+		}
+
+		return datas;
+	}
+
+	public static Object resolve(BytesValue bytes) {
+		// 反序列化该接口
+		Object currData = BinaryProtocol.decode(bytes);
+
+		// 代理对象类型不能使用class判断，只能使用instanceof
+		if (currData instanceof WRAP_STRING) {
+			return ((WRAP_STRING) currData).getValue();
+		} else if (currData instanceof WRAP_INT) {
+			return ((WRAP_INT) currData).getValue();
+		} else if (currData instanceof WRAP_LONG) {
+			return ((WRAP_LONG) currData).getValue();
+		} else if (currData instanceof WRAP_BYTES) {
+			return ((WRAP_BYTES) currData).getValue();
+		} else if (currData instanceof WRAP_SHORT) {
+			return ((WRAP_SHORT) currData).getValue();
+		} else {
+			return currData;
+		}
+	}
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractType.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractType.java
index bbd967a1..e70b385e 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractType.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractType.java
@@ -63,24 +63,24 @@ public class ContractType {
 	/**
 	 * 解析合约的声明；
 	 * 
-	 * @param delaredInterface 声明合约的接口类型；
+	 * @param contractIntf 合约的声明接口，必须是 interface ；
 	 * @return
 	 */
 	public static ContractType resolve(Class<?> contractIntf) {
-
+		// TODO：方法会检查合约方法声明的类型和返回值类型；
 		// 如果是Class则首先获取其接口
 		if (!contractIntf.isInterface()) {
 			Class<?> realIntf = null;
 			Class<?>[] interfaces = contractIntf.getInterfaces();
-			for (Class<?> intf: interfaces) {
+			for (Class<?> intf : interfaces) {
 				if (intf.isAnnotationPresent(Contract.class)) {
 					realIntf = intf;
 					break;
 				}
 			}
 			if (realIntf == null) {
-				throw new IllegalDataException(String.format(
-						"%s is not a Contract Type, because there is not @Contract !", contractIntf.getName()));
+				throw new IllegalDataException(String
+						.format("%s is not a Contract Type, because there is not @Contract !", contractIntf.getName()));
 			}
 			contractIntf = realIntf;
 		}
@@ -105,22 +105,25 @@ public class ContractType {
 
 			if (contractEvent != null) {
 				String eventName = contractEvent.name();
-				//if annoMethodMap has contained the eventName, too many same eventNames exists probably, say NO!
-				if(contractType.events.containsKey(eventName)){
+				// if annoMethodMap has contained the eventName, too many same eventNames exists
+				// probably, say NO!
+				if (contractType.events.containsKey(eventName)) {
 					throw new ContractException("there is repeat definition of contractEvent to @ContractEvent.");
 				}
-				//check param's type is fit for need.
+				// check param's type is fit for need.
 				Class<?>[] paramTypes = method.getParameterTypes();
-				for(Class<?> currParamType : paramTypes) {
+				for (Class<?> currParamType : paramTypes) {
 					if (!ContractSerializeUtils.support(currParamType)) {
-						throw new IllegalStateException(String.format("Param Type = %s can not support !!!", currParamType.getName()));
+						throw new IllegalStateException(
+								String.format("Param Type = %s can not support !!!", currParamType.getName()));
 					}
 				}
 
 				// 判断返回值是否可序列化
 				Class<?> returnType = method.getReturnType();
 				if (!ContractSerializeUtils.support(returnType)) {
-					throw new IllegalStateException(String.format("Return Type = %s can not support !!!", returnType.getName()));
+					throw new IllegalStateException(
+							String.format("Return Type = %s can not support !!!", returnType.getName()));
 				}
 
 				contractType.events.put(eventName, method);
@@ -132,10 +135,7 @@ public class ContractType {
 
 	@Override
 	public String toString() {
-		return "ContractType{" +
-				"name='" + name + '\'' +
-				", events=" + events +
-				", handleMethods=" + handleMethods +
-				'}';
+		return "ContractType{" + "name='" + name + '\'' + ", events=" + events + ", handleMethods=" + handleMethods
+				+ '}';
 	}
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/BytesValueList.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/BytesValueList.java
new file mode 100644
index 00000000..7f945e22
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/BytesValueList.java
@@ -0,0 +1,11 @@
+package com.jd.blockchain.ledger;
+
+import com.jd.blockchain.binaryproto.DataContract;
+import com.jd.blockchain.consts.DataCodes;
+
+@DataContract(code = DataCodes.BYTES_VALUE_LIST)
+public interface BytesValueList {
+
+	BytesValue[] getValues();
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/ContractEventSendOperation.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/ContractEventSendOperation.java
index 1530fb0c..1e79ec49 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/ContractEventSendOperation.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/ContractEventSendOperation.java
@@ -37,11 +37,4 @@ public interface ContractEventSendOperation extends Operation {
 	@DataField(order = 4, primitiveType = PrimitiveType.BYTES)
 	byte[] getArgs();
 
-	/**
-	 * 获得交易操作时间;
-	 * 
-	 * @return
-	 */
-	@DataField(order = 5, primitiveType = PrimitiveType.INT64)
-	long getTxOpTime();
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/DataType.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/DataType.java
index ac6e4b44..1cb8fce3 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/DataType.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/DataType.java
@@ -36,24 +36,22 @@ public enum DataType {
 	INT32(PrimitiveType.INT32.CODE),
 
 	INT64(PrimitiveType.INT64.CODE),
-	
+
 	/**
 	 * 文本数据；
 	 */
 	TEXT(PrimitiveType.TEXT.CODE),
-	
 
 	/**
 	 * 二进制数据；
 	 */
 	BYTES(PrimitiveType.BYTES.CODE),
-	
+
 	/**
 	 * 时间戳；
 	 */
 	TIMESTAMP((byte) (BaseType.INTEGER | 0x08)),
 
-
 	/**
 	 * 文本数据；
 	 */
@@ -64,7 +62,6 @@ public enum DataType {
 	 */
 	XML((byte) (BaseType.TEXT | 0x02)),
 
-
 	/**
 	 * 大整数；
 	 */
@@ -84,28 +81,32 @@ public enum DataType {
 	 * 位置坐标；
 	 */
 	LOCATION((byte) (BaseType.BYTES | 0x04)),
-	
+
 	/**
 	 * 公钥；
 	 */
 	PUB_KEY((byte) (BaseType.BYTES | 0x05)),
-	
+
 	/**
 	 * 签名摘要；
 	 */
 	SIGNATURE_DIGEST((byte) (BaseType.BYTES | 0x06)),
-	
+
 	/**
 	 * 哈希摘要；
 	 */
 	HASH_DIGEST((byte) (BaseType.BYTES | 0x07)),
-	
+
 	/**
 	 * 加密数据；
 	 */
-	ENCRYPTED_DATA((byte) (BaseType.BYTES | 0x08));
+	ENCRYPTED_DATA((byte) (BaseType.BYTES | 0x08)),
+
+	/**
+	 * DataContract 数据；
+	 */
+	DATA_CONTRACT((byte) (BaseType.EXT | 0x01));
 
-	
 	@EnumField(type = PrimitiveType.INT8)
 	public final byte CODE;
 
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResult.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResult.java
index a6b25344..b6c6c3bd 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResult.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResult.java
@@ -8,9 +8,9 @@ import com.jd.blockchain.consts.DataCodes;
 @DataContract(code = DataCodes.TX_OP_RESULT)
 public interface OperationResult {
 
-    @DataField(order=1, primitiveType = PrimitiveType.INT32)
-    int getIndex();
+	@DataField(order = 1, primitiveType = PrimitiveType.INT32)
+	int getIndex();
 
-    @DataField(order=2, primitiveType = PrimitiveType.BYTES)
-    byte[] getResult();
+	@DataField(order = 2, refContract = true)
+	BytesValue getResult();
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResultData.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResultData.java
index 399596a3..336887cf 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResultData.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/OperationResultData.java
@@ -5,12 +5,12 @@ public class OperationResultData implements OperationResult {
 
     private int index;
 
-    private byte[] result;
+    private BytesValue result;
 
     public OperationResultData() {
     }
 
-    public OperationResultData(int index, byte[] result) {
+    public OperationResultData(int index, BytesValue result) {
         this.index = index;
         this.result = result;
     }
@@ -21,7 +21,7 @@ public class OperationResultData implements OperationResult {
     }
 
     @Override
-    public byte[] getResult() {
+    public BytesValue getResult() {
         return result;
     }
 
@@ -29,7 +29,7 @@ public class OperationResultData implements OperationResult {
         this.index = index;
     }
 
-    public void setResult(byte[] result) {
+    public void setResult(BytesValue result) {
         this.result = result;
     }
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/PreparedTransaction.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/PreparedTransaction.java
index d73d6091..b7db5b59 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/PreparedTransaction.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/PreparedTransaction.java
@@ -2,7 +2,6 @@ package com.jd.blockchain.ledger;
 
 import com.jd.blockchain.crypto.AsymmetricKeypair;
 import com.jd.blockchain.crypto.HashDigest;
-import com.jd.blockchain.crypto.SignatureFunction;
 
 /**
  * 已就绪的交易；
@@ -10,7 +9,7 @@ import com.jd.blockchain.crypto.SignatureFunction;
  * @author huanghaiquan
  *
  */
-public interface PreparedTransaction extends HashObject  {
+public interface PreparedTransaction extends HashObject {
 
 	/**
 	 * 交易内容的 Hash；
@@ -33,10 +32,8 @@ public interface PreparedTransaction extends HashObject  {
 	/**
 	 * 对交易进行签名；
 	 * 
-	 * @param address
-	 *            签名账户的地址；
-	 * @param privKey
-	 *            签名账户的私钥；
+	 * @param address 签名账户的地址；
+	 * @param privKey 签名账户的私钥；
 	 * @return
 	 */
 	DigitalSignature sign(AsymmetricKeypair keyPair);
@@ -44,17 +41,22 @@ public interface PreparedTransaction extends HashObject  {
 	/**
 	 * 加入签名；
 	 * 
-	 * @param address
-	 *            签名账户的地址；
-	 * @param digest
-	 *            Base64格式的签名摘要；
+	 * @param address 签名账户的地址；
+	 * @param digest  Base64格式的签名摘要；
 	 * @return
 	 */
 	void addSignature(DigitalSignature signature);
 
 	/**
-	 * 生成交易请求；
+	 * 提交交易请求到共识节点；<br>
+	 * 
+	 * 这是同步方法，将阻塞当前线程，直到交易处理完成并返回结果之后，此方法才返回给调用者；
 	 * 
 	 */
 	TransactionResponse commit();
+
+	/**
+	 * 取消交易；<br>
+	 */
+	void cancel();
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/BlockchainOperationFactory.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/BlockchainOperationFactory.java
index b38d06fa..2820393b 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/BlockchainOperationFactory.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/BlockchainOperationFactory.java
@@ -4,8 +4,8 @@ import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
-import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.ledger.BlockchainIdentity;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.ContractCodeDeployOperation;
 import com.jd.blockchain.ledger.ContractEventSendOperation;
 import com.jd.blockchain.ledger.DataAccountKVSetOperation;
@@ -44,6 +44,7 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 
 	private ContractInvocationProxyBuilder contractInvoProxyBuilder = new ContractInvocationProxyBuilder();
 
+	// TODO: 暂时只支持单线程情形，未考虑多线程；
 	private List<Operation> operationList = new ArrayList<>();
 
 	@Override
@@ -90,16 +91,43 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 		return contractInvoProxyBuilder.create(address, contractIntf, contractEventSendOpBuilder);
 	}
 
-	@Override
-	public <T> EventResult<T> result(ContractEventExecutor execute) {
-		return contractInvoProxyBuilder.execute(execute);
-	}
-
+	/**
+	 * 返回已经定义的操作列表；
+	 * 
+	 * @return
+	 */
 	public Collection<Operation> getOperations() {
-		// TODO: 合并操作列表中可能的重复操作；
 		return operationList;
 	}
 
+	/**
+	 * 返回与操作列表对应的返回值处理器；
+	 * 
+	 * @return
+	 */
+	public Collection<OperationReturnValueHandler> getReturnValuetHandlers() {
+		List<OperationReturnValueHandler> resultHandlers = new ArrayList<OperationReturnValueHandler>();
+		int index = 0;
+		for (Operation op : operationList) {
+			if (op instanceof ContractEventSendOperation) {
+				// 操作具有返回值，创建对应的结果处理器；
+				ContractEventSendOpTemplate opTemp = (ContractEventSendOpTemplate) op;
+				ContractInvocation invocation = opTemp.getInvocation();
+				OperationReturnValueHandler retnHandler;
+				if (invocation == null) {
+					retnHandler = new NullOperationReturnValueHandler(index);
+				} else {
+					invocation.setOperationIndex(index);
+					retnHandler = invocation;
+				}
+				resultHandlers.add(retnHandler);
+			}
+			index++;
+		}
+
+		return resultHandlers;
+	}
+
 	public void clear() {
 		operationList.clear();
 	}
@@ -160,13 +188,6 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 			}
 		}
 
-//		@Override
-//		public DataAccountKVSetOperationBuilder set(String key, byte[] value, long expVersion) {
-//			innerBuilder.set(key, value, expVersion);
-//			addOperation();
-//			return this;
-//		}
-
 		@Override
 		public DataAccountKVSetOperationBuilder setText(String key, String value, long expVersion) {
 			innerBuilder.setText(key, value, expVersion);
@@ -202,13 +223,6 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 			return this;
 		}
 
-//		@Override
-//		public DataAccountKVSetOperationBuilder set(String key, String value, long expVersion) {
-//			innerBuilder.setText(key, value, expVersion);
-//			addOperation();
-//			return this;
-//		}
-
 		@Override
 		public DataAccountKVSetOperationBuilder setJSON(String key, String value, long expVersion) {
 			innerBuilder.setJSON(key, value, expVersion);
@@ -233,7 +247,6 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 	}
 
 	private class ContractCodeDeployOperationBuilderFilter implements ContractCodeDeployOperationBuilder {
-
 		@Override
 		public ContractCodeDeployOperation deploy(BlockchainIdentity id, byte[] chainCode) {
 			ContractCodeDeployOperation op = CONTRACT_CODE_DEPLOY_OP_BUILDER.deploy(id, chainCode);
@@ -250,25 +263,38 @@ public class BlockchainOperationFactory implements ClientOperator, LedgerInitOpe
 		}
 
 		@Override
-		public ContractEventSendOperation send(Bytes address, String event, byte[] args) {
-			int opIndex = operationList.size();
-			ContractEventSendOpTemplate op = new ContractEventSendOpTemplate(address, event, args, opIndex);
+		public synchronized ContractEventSendOperation send(Bytes address, String event, byte[] args) {
+			ContractEventSendOpTemplate op = new ContractEventSendOpTemplate(address, event, args);
 			operationList.add(op);
 			return op;
 		}
 
+	}
+
+	/**
+	 * 不做任何操作的返回值处理器；
+	 * 
+	 * @author huanghaiquan
+	 *
+	 */
+	private static class NullOperationReturnValueHandler implements OperationReturnValueHandler {
+
+		private int operationIndex;
+
+		public NullOperationReturnValueHandler(int operationIndex) {
+			this.operationIndex = operationIndex;
+		}
+
 		@Override
-		public ContractEventSendOperation send(String address) {
-			return send(Bytes.fromBase58(address));
+		public int getOperationIndex() {
+			return operationIndex;
 		}
 
 		@Override
-		public ContractEventSendOperation send(Bytes address) {
-			int opIndex = operationList.size();
-			ContractEventSendOpTemplate op = new ContractEventSendOpTemplate(address, opIndex);
-			operationList.add(op);
-			return op;
+		public Object setReturnValue(BytesValue bytesValue) {
+			return null;
 		}
+
 	}
 
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOpTemplate.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOpTemplate.java
index 641ea6f2..c6e62933 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOpTemplate.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOpTemplate.java
@@ -13,47 +13,13 @@ public class ContractEventSendOpTemplate implements ContractEventSendOperation {
 	private Bytes contractAddress;
 	private byte[] args;
 	private String event;
-	//交易操作时间;
-	private long txOpTime;
-	// 所属操作Index
-	private int opIndex;
-
-	public ContractEventSendOpTemplate() {
-	}
-
-	public ContractEventSendOpTemplate(Bytes contractAddress) {
-		this(contractAddress, -1);
-	}
-
-	public ContractEventSendOpTemplate(Bytes contractAddress, int opIndex) {
-		this.contractAddress = contractAddress;
-		this.opIndex = opIndex;
-		this.txOpTime = System.currentTimeMillis();
-	}
+	
+	private ContractInvocation invocation;
 
 	public ContractEventSendOpTemplate(Bytes contractAddress, String event, byte[] args) {
-		this(contractAddress, event, args, -1);
-	}
-
-	public ContractEventSendOpTemplate(Bytes contractAddress, String event, byte[] args, int opIndex) {
 		this.contractAddress = contractAddress;
 		this.event = event;
 		this.args = args;
-		this.opIndex = opIndex;
-		this.txOpTime = System.currentTimeMillis();
-	}
-
-	public void setArgs(byte[] args) {
-		this.args = args;
-	}
-
-	public void setEvent(String event) {
-		this.event = event;
-	}
-
-	public void setEventAndArgs(String event, byte[] args) {
-		this.event = event;
-		this.args = args;
 	}
 
 	@Override
@@ -71,17 +37,12 @@ public class ContractEventSendOpTemplate implements ContractEventSendOperation {
 		return args;
 	}
 
-	@Override
-	public long getTxOpTime() {
-		return txOpTime;
+	public ContractInvocation getInvocation() {
+		return invocation;
 	}
-
-	/**
-	 * 获取所属交易中的序号，该值不需要序列化
-	 *
-	 * @return
-	 */
-	public int getOpIndex() {
-		return opIndex;
+	
+	public void setInvocation(ContractInvocation invocation) {
+		this.invocation = invocation;
 	}
+
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOperationBuilder.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOperationBuilder.java
index 5bc2e539..7a80a346 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOperationBuilder.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractEventSendOperationBuilder.java
@@ -7,33 +7,17 @@ public interface ContractEventSendOperationBuilder {
 
 	/**
 	 * @param address 合约地址；
-	 * @param event 事件名；
-	 * @param args 事件参数；
+	 * @param event   事件名；
+	 * @param args    事件参数；
 	 * @return
 	 */
-	@Deprecated
 	ContractEventSendOperation send(String address, String event, byte[] args);
-	
+
 	/**
 	 * @param address 合约地址；
-	 * @param event 事件名；
-	 * @param args 事件参数；
+	 * @param event   事件名；
+	 * @param args    事件参数；
 	 * @return
 	 */
-	@Deprecated
 	ContractEventSendOperation send(Bytes address, String event, byte[] args);
-
-	/**
-	 *
-	 * @param address
-	 * @return
-	 */
-	ContractEventSendOperation send(String address);
-
-	/**
-	 *
-	 * @param address
-	 * @return
-	 */
-	ContractEventSendOperation send(Bytes address);
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocation.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocation.java
new file mode 100644
index 00000000..100d1a75
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocation.java
@@ -0,0 +1,66 @@
+package com.jd.blockchain.transaction;
+
+import java.lang.reflect.Method;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.Future;
+
+import com.jd.blockchain.contract.ContractType;
+import com.jd.blockchain.ledger.BytesValue;
+
+/**
+ * ContractInvocation 包装了客户端发起的一次合约方法调用的相关信息，用于在客户端交易处理上下文进行共享处理状态；
+ * 
+ * @author huanghaiquan
+ *
+ */
+class ContractInvocation implements OperationReturnValueHandler {
+
+	private Method method;
+
+	private ContractType contractType;
+
+	private int operationIndex = -1;
+
+	private CompletableFuture<Object> returnValueFuture;
+
+	public ContractInvocation(ContractType contractType, Method method) {
+		this.contractType = contractType;
+		this.method = method;
+		this.returnValueFuture = new CompletableFuture<Object>();
+	}
+
+	public ContractType getContractType() {
+		return contractType;
+	}
+
+	@Override
+	public int getOperationIndex() {
+		return operationIndex;
+	}
+
+	public void setOperationIndex(int operationIndex) {
+		this.operationIndex = operationIndex;
+	}
+
+	public Class<?> getReturnType() {
+		return method.getReturnType();
+	}
+
+	public Future<Object> getReturnValue() {
+		return returnValueFuture;
+	}
+
+	@Override
+	public Object setReturnValue(BytesValue bytesValue) {
+		// Resolve BytesValue to an value object with the return type;
+		Object returnValue = resolveValue(bytesValue, method.getReturnType());
+		returnValueFuture.complete(returnValue);
+		return returnValue;
+	}
+
+	private Object resolveValue(BytesValue bytesValue, Class<?> returnType) {
+		// TODO: Resolve BytesValue to an value object with the return type;
+		throw new IllegalStateException("Not implemented!");
+	}
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationHandler.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationHandler.java
new file mode 100644
index 00000000..b005e650
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationHandler.java
@@ -0,0 +1,109 @@
+package com.jd.blockchain.transaction;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.util.Arrays;
+
+import com.jd.blockchain.contract.ContractException;
+import com.jd.blockchain.contract.ContractSerializeUtils;
+import com.jd.blockchain.contract.ContractType;
+import com.jd.blockchain.utils.Bytes;
+import com.jd.blockchain.utils.IllegalDataException;
+
+public class ContractInvocationHandler implements InvocationHandler {
+
+	private Bytes contractAddress;
+
+	private ContractType contractType;
+
+	private ContractEventSendOperationBuilder sendOpBuilder;
+
+	private int proxyHashCode;
+
+	public ContractInvocationHandler(Bytes contractAddress, ContractType contractType,
+			ContractEventSendOperationBuilder sendOpBuilder) {
+		this.contractAddress = contractAddress;
+		if (contractType == null) {
+			throw new IllegalDataException("contractType == null, no invoke really.");
+		}
+		this.contractType = contractType;
+		this.sendOpBuilder = sendOpBuilder;
+		this.proxyHashCode = Arrays.deepHashCode(new Object[] { this, contractAddress, contractType, sendOpBuilder });
+	}
+
+	@Override
+	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
+		// 判断是否是常规方法调用
+		if (method.getName().equals("hashCode")) {
+			// 该处需要使用当前代理类的HashCode
+			return proxyHashCode;
+		}
+		if (method.getName().equals("toString")) {
+			// 该处使用当前代理类的toString
+			return this.toString();
+		}
+
+		String event = contractType.getEvent(method);
+		if (event == null) {
+			// 该方法不是合约可执行的方法
+			throw new ContractException(
+					String.format("The invoking method [%s] is not annotated as event handle method by @ContractEvent!",
+							method.toString()));
+		}
+		// 序列化调用参数；
+		byte[] argBytes = serializeArgs(args);
+
+		// 定义合约调用操作；
+		@SuppressWarnings("deprecation")
+		ContractEventSendOpTemplate opTemplate = (ContractEventSendOpTemplate) sendOpBuilder.send(contractAddress,
+				event, argBytes);
+
+		// 加入合约调用的额外信息；
+		ContractInvocation invocation = new ContractInvocation(contractType, method);
+
+		// 传递给定义操作的上下文，以便在生成交易时，同步操作在交易中的索引位置；
+		opTemplate.setInvocation(invocation);
+
+		// 传递给通过代理对象调用合约方法的调用者，以便可以同步操作在交易中的索引位置以及操作的返回值；
+		ContractInvocationStub.set(invocation);
+
+		// 返回类型的默认值
+		return getDefaultValue(method.getReturnType());
+	}
+
+	private byte[] serializeArgs(Object[] args) {
+		return ContractSerializeUtils.serializeArray(args);
+	}
+
+	private Object getDefaultValue(Class<?> returnType) {
+		if (returnType == void.class || returnType == Void.class) {
+			return null;
+		}
+
+		if (!returnType.isPrimitive()) {
+			// 非基本类型
+			return null;
+		} else {
+			// 基本类型需要处理返回值，目前采用枚举遍历方式
+			// 八种基本类型：int, double, float, long, short, boolean, byte, char， void
+			if (returnType.equals(int.class)) {
+				return 0;
+			} else if (returnType.equals(double.class)) {
+				return 0.0D;
+			} else if (returnType.equals(float.class)) {
+				return 0F;
+			} else if (returnType.equals(long.class)) {
+				return 0L;
+			} else if (returnType.equals(short.class)) {
+				return (short) 0;
+			} else if (returnType.equals(boolean.class)) {
+				return Boolean.FALSE;
+			} else if (returnType.equals(byte.class)) {
+				return (byte) 0;
+			} else if (returnType.equals(char.class)) {
+				return (char) 0;
+			}
+			return null;
+		}
+	}
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxy.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxy.java
deleted file mode 100644
index 00a8edfc..00000000
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxy.java
+++ /dev/null
@@ -1,110 +0,0 @@
-package com.jd.blockchain.transaction;
-
-import java.lang.reflect.InvocationHandler;
-import java.lang.reflect.Method;
-
-import com.jd.blockchain.contract.ContractSerializeUtils;
-import com.jd.blockchain.contract.ContractType;
-import com.jd.blockchain.ledger.ContractEventSendOperation;
-import com.jd.blockchain.utils.Bytes;
-import com.jd.blockchain.utils.IllegalDataException;
-
-public class ContractInvocationProxy implements InvocationHandler {
-
-	// private String contractMessage;
-
-//	private Bytes contractAddress;
-
-	private ContractType contractType;
-
-//	private ContractEventSendOperationBuilder sendOpBuilder;
-
-	private ContractEventSendOperation sendOperation;
-
-	public ContractInvocationProxy(Bytes contractAddress, ContractType contractType,
-			ContractEventSendOperationBuilder sendOpBuilder) {
-//		this.contractAddress = contractAddress;
-		if(contractType == null){
-			throw new IllegalDataException("contractType == null, no invoke really.");
-		}
-		this.contractType = contractType;
-//		this.sendOpBuilder = sendOpBuilder;
-		// Send一个地址，但不涉及Event
-		this.sendOperation = sendOpBuilder.send(contractAddress);
-	}
-
-	@Override
-	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-
-		// 判断是否是常规方法调用
-		if (method.getName().equals("hashCode")) {
-			// 该处需要使用当前代理类的HashCode
-			return this.hashCode();
-		}
-		if (method.getName().equals("toString")) {
-			// 该处使用当前代理类的toString
-			return this.toString();
-		}
-
-		if (sendOperation.getEvent() != null) {
-			throw new IllegalStateException("Contract Object can only execute method one time !!!");
-		}
-
-		String event = contractType.getEvent(method);
-		if (event == null) {
-			// 该方法不是合约可执行的方法
-			throw new IllegalAccessException(String.format("This Method [%s] is not Contract Event Method !!!",
-					method.getName()));
-		}
-		// 合约方法；
-		byte[] argBytes = serializeArgs(args);
-		if (sendOperation instanceof ContractEventSendOpTemplate) {
-			((ContractEventSendOpTemplate) sendOperation).setEventAndArgs(event, argBytes);
-		}
-		// 代理操作，返回值类型无法创建
-		return returnResult(method.getReturnType());
-	}
-
-	private byte[] serializeArgs(Object[] args) {
-		return ContractSerializeUtils.serializeArray(args);
-	}
-
-	public int opIndex() {
-		if (sendOperation instanceof ContractEventSendOpTemplate) {
-			return ((ContractEventSendOpTemplate) sendOperation).getOpIndex();
-		}
-		return -1;
-	}
-
-	private Object returnResult(Class<?> clazz) {
-		if (clazz.equals(Void.TYPE)) {
-			return null;
-		}
-
-		if (!clazz.isPrimitive()) {
-			// 非基本类型
-			return null;
-		} else {
-			// 基本类型需要处理返回值，目前采用枚举遍历方式
-			// 八种基本类型：int, double, float, long, short, boolean, byte, char， void
-			if (clazz.equals(int.class)) {
-				return 0;
-			} else if (clazz.equals(double.class)) {
-				return 0.0D;
-			} else if (clazz.equals(float.class)) {
-				return 0F;
-			} else if (clazz.equals(long.class)) {
-				return 0L;
-			} else if (clazz.equals(short.class)) {
-				return (short)0;
-			} else if (clazz.equals(boolean.class)) {
-				return Boolean.FALSE;
-			} else if (clazz.equals(byte.class)) {
-				return (byte)0;
-			} else if (clazz.equals(char.class)) {
-				return (char)0;
-			}
-			return null;
-		}
-	}
-}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxyBuilder.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxyBuilder.java
index 2d0d902a..82c07197 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxyBuilder.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxyBuilder.java
@@ -9,11 +9,17 @@ import com.jd.blockchain.contract.ContractType;
 import com.jd.blockchain.utils.Bytes;
 import com.jd.blockchain.utils.IllegalDataException;
 
+/**
+ * 合约调用代理的构建器；
+ * 
+ * @author huanghaiquan
+ *
+ */
 public class ContractInvocationProxyBuilder {
 
 	private Map<Class<?>, ContractType> contractTypes = new ConcurrentHashMap<>();
 
-	private Map<Object, Integer> contractOperations = new ConcurrentHashMap<>();
+//	private Map<Object, Integer> contractOperations = new ConcurrentHashMap<>();
 
 	public <T> T create(String address, Class<T> contractIntf, ContractEventSendOperationBuilder contractEventBuilder) {
 		return create(Bytes.fromBase58(address), contractIntf, contractEventBuilder);
@@ -23,34 +29,34 @@ public class ContractInvocationProxyBuilder {
 	public <T> T create(Bytes address, Class<T> contractIntf, ContractEventSendOperationBuilder contractEventBuilder) {
 		ContractType contractType = resolveContractType(contractIntf);
 
-		ContractInvocationProxy proxyHandler = new ContractInvocationProxy(address, contractType,
-				contractEventBuilder);
+		ContractInvocationHandler proxyHandler = new ContractInvocationHandler(address, contractType, contractEventBuilder);
 
 		T proxy = (T) Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
 				new Class<?>[] { contractIntf }, proxyHandler);
-		// 创建关联关系
-		contractOperations.put(proxy, proxyHandler.opIndex());
+//		// 创建关联关系
+//		contractOperations.put(proxy, proxyHandler.opIndex());
 		return proxy;
 	}
 
-	public <T> EventResult<T> execute(ContractEventExecutor execute) {
-		Object contractProxy = execute.execute();
-		if (contractProxy == null) {
-			// 该方法执行必须要有返回值
-			throw new IllegalStateException(
-					String.format("ContractEventExecutor [%s] 's return must be not empty !!!", execute.toString()));
-		}
-		if (!(contractProxy instanceof Proxy)) {
-			throw new IllegalDataException(
-					String.format("ContractEventExecutor [%s] 's return must from TxTemplate.contract()'s result !!!", execute.toString()));
-		}
-
-		Integer opIndex = contractOperations.get(contractProxy);
-		if (opIndex != null && opIndex > -1) {
-			return new EventResult<>(opIndex);
-		}
-		return null;
-	}
+//	public <T> EventResult<T> execute(ContractEventExecutor execute) {
+//		Object contractProxy = execute.execute();
+//		if (contractProxy == null) {
+//			// 该方法执行必须要有返回值
+//			throw new IllegalStateException(
+//					String.format("ContractEventExecutor [%s] 's return must be not empty !!!", execute.toString()));
+//		}
+//		if (!(contractProxy instanceof Proxy)) {
+//			throw new IllegalDataException(
+//					String.format("ContractEventExecutor [%s] 's return must from TxTemplate.contract()'s result !!!",
+//							execute.toString()));
+//		}
+//
+//		Integer opIndex = contractOperations.get(contractProxy);
+//		if (opIndex != null && opIndex > -1) {
+//			return new EventResult<>(opIndex);
+//		}
+//		return null;
+//	}
 
 	private ContractType resolveContractType(Class<?> contractIntf) {
 		ContractType contractType = contractTypes.get(contractIntf);
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationStub.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationStub.java
new file mode 100644
index 00000000..661319b1
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationStub.java
@@ -0,0 +1,33 @@
+package com.jd.blockchain.transaction;
+
+/**
+ * 用于在上下文中传递合约调用返回值的工具类；
+ * 
+ * @author huanghaiquan
+ *
+ */
+class ContractInvocationStub {
+
+	private static ThreadLocal<ContractInvocation> stub = new ThreadLocal<ContractInvocation>();
+
+	private ContractInvocationStub() {
+	}
+
+	public static void set(ContractInvocation invocation) {
+		if (invocation == null) {
+			throw new IllegalArgumentException("Null stub value!");
+		}
+		stub.set(invocation);
+	}
+
+	public static ContractInvocation take() {
+		ContractInvocation subValue = stub.get();
+		if (subValue == null) {
+			throw new IllegalStateException(
+					"The latest invocation of contract has not been stubbed! It may be caused by the wrong call sequence from the upper layer!");
+		}
+		stub.remove();
+		return subValue;
+	}
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractReturns.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractReturns.java
new file mode 100644
index 00000000..a4e4bdcd
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractReturns.java
@@ -0,0 +1,418 @@
+package com.jd.blockchain.transaction;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+public class ContractReturns {
+
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnValue<String> retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * String retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param <T>
+	 * @param call
+	 * @return
+	 */
+	public static <T> ReturnValue<T> decode(T call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnValue<T>(invocation);
+	}
+
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnLongValue retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * long retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param call
+	 * @return
+	 */
+	public static ReturnLongValue decode(long call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnLongValue(invocation);
+	}
+
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnLongValue retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * int retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param call
+	 * @return
+	 */
+	public static ReturnIntValue decode(int call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnIntValue(invocation);
+	}
+
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnLongValue retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * short retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param call
+	 * @return
+	 */
+	public static ReturnShortValue decode(short call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnShortValue(invocation);
+	}
+
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnLongValue retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * byte retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param call
+	 * @return
+	 */
+	public static ReturnByteValue decode(byte call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnByteValue(invocation);
+	}
+	
+	/**
+	 * 解析合约方法调用的返回值；
+	 * <p>
+	 * 用法示例：<br>
+	 * <code>
+	 * ReturnLongValue retnHolder = decode(contract.issue(assetKey, amount));
+	 * 
+	 * PreparedTransaction prepTx = tx.prepare();
+	 * prepTx.sign(userKey);
+	 * prepTx.commit()
+	 * 
+	 * boolean retnValue = retnHolder.get(); //这是同步方法，会阻塞当前线程等待交易提交后返回结果；
+	 * </code>
+	 * 
+	 * @param call
+	 * @return
+	 */
+	public static ReturnBooleanValue decode(boolean call) {
+		ContractInvocation invocation = ContractInvocationStub.take();
+		return new ReturnBooleanValue(invocation);
+	}
+
+	
+	//----------------------- 内部类型 -----------------------
+	
+	
+	private static class ReturnValueBase {
+		private ContractInvocation invocation;
+
+		private ReturnValueBase(ContractInvocation invocation) {
+			this.invocation = invocation;
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		private Object get() {
+			try {
+				return invocation.getReturnValue().get();
+			} catch (InterruptedException | ExecutionException e) {
+				throw new IllegalStateException(e.getMessage(), e);
+			}
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		private Object get(long timeout, TimeUnit unit) throws TimeoutException {
+			try {
+				return invocation.getReturnValue().get(timeout, unit);
+			} catch (InterruptedException | ExecutionException e) {
+				throw new IllegalStateException(e.getMessage(), e);
+			}
+		}
+	}
+
+	public static class ReturnValue<T> extends ReturnValueBase {
+
+		private ReturnValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		@SuppressWarnings("unchecked")
+		public T get() {
+			return (T) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public T get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		@SuppressWarnings("unchecked")
+		public T get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (T) super.get(timeout, unit);
+		}
+	}
+
+	public static class ReturnLongValue extends ReturnValueBase {
+
+		private ReturnLongValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		public long get() {
+			return (long) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public long get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public long get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (long) super.get(timeout, unit);
+		}
+	}
+
+	public static class ReturnIntValue extends ReturnValueBase {
+
+		private ReturnIntValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		public int get() {
+			return (int) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public int get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public int get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (int) super.get(timeout, unit);
+		}
+	}
+
+	public static class ReturnShortValue extends ReturnValueBase {
+
+		private ReturnShortValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		public short get() {
+			return (short) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public short get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public short get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (short) super.get(timeout, unit);
+		}
+	}
+
+	public static class ReturnByteValue extends ReturnValueBase {
+
+		private ReturnByteValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		public byte get() {
+			return (byte) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public byte get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public byte get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (byte) super.get(timeout, unit);
+		}
+	}
+
+	public static class ReturnBooleanValue extends ReturnValueBase {
+
+		private ReturnBooleanValue(ContractInvocation invocation) {
+			super(invocation);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @return
+		 */
+		public boolean get() {
+			return (boolean) super.get();
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public boolean get(long timeout) throws TimeoutException {
+			return get(timeout, TimeUnit.MILLISECONDS);
+		}
+
+		/**
+		 * 等待结果合约调用的结果返回；
+		 * 
+		 * @param timeout
+		 * @param unit
+		 * @return
+		 * @throws TimeoutException
+		 */
+		public boolean get(long timeout, TimeUnit unit) throws TimeoutException {
+			return (boolean) super.get(timeout, unit);
+		}
+	}
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/EventOperator.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/EventOperator.java
index de6e1c0e..8540a470 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/EventOperator.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/EventOperator.java
@@ -1,18 +1,9 @@
 package com.jd.blockchain.transaction;
 
-import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.utils.Bytes;
 
 public interface EventOperator {
 
-	// /**
-	// * 合约事件；
-	// *
-	// * @return
-	// */
-	// @Deprecated
-	// ContractEventSendOperationBuilder contractEvents();
-
 	/**
 	 * 创建调用合约的代理实例；
 	 * 
@@ -31,11 +22,11 @@ public interface EventOperator {
 	 */
 	<T> T contract(Bytes address, Class<T> contractIntf);
 
-	/**
-	 * 执行合约异步等待应答结果
-	 *
-	 * @param execute
-	 * @return
-	 */
-	<T> EventResult<T> result(ContractEventExecutor execute);
+//	/**
+//	 * 执行合约异步等待应答结果
+//	 *
+//	 * @param execute
+//	 * @return
+//	 */
+//	<T> EventResult<T> result(ContractEventExecutor execute);
 }
\ No newline at end of file
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/OperationReturnValueHandler.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/OperationReturnValueHandler.java
new file mode 100644
index 00000000..c490091a
--- /dev/null
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/OperationReturnValueHandler.java
@@ -0,0 +1,11 @@
+package com.jd.blockchain.transaction;
+
+import com.jd.blockchain.ledger.BytesValue;
+
+interface OperationReturnValueHandler {
+
+	int getOperationIndex();
+
+	Object setReturnValue(BytesValue bytesValue);
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/PreparedTx.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/PreparedTx.java
index f45706f4..f9636427 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/PreparedTx.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/PreparedTx.java
@@ -1,17 +1,23 @@
 package com.jd.blockchain.transaction;
 
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Comparator;
+
 import com.jd.blockchain.binaryproto.BinaryProtocol;
-import com.jd.blockchain.contract.ContractSerializeUtils;
-import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.crypto.AsymmetricKeypair;
 import com.jd.blockchain.crypto.Crypto;
 import com.jd.blockchain.crypto.HashDigest;
 import com.jd.blockchain.crypto.PrivKey;
 import com.jd.blockchain.crypto.SignatureDigest;
 import com.jd.blockchain.crypto.SignatureFunction;
-import com.jd.blockchain.ledger.*;
-
-import java.util.Map;
+import com.jd.blockchain.ledger.DigitalSignature;
+import com.jd.blockchain.ledger.OperationResult;
+import com.jd.blockchain.ledger.PreparedTransaction;
+import com.jd.blockchain.ledger.TransactionContent;
+import com.jd.blockchain.ledger.TransactionRequest;
+import com.jd.blockchain.ledger.TransactionRequestBuilder;
+import com.jd.blockchain.ledger.TransactionResponse;
 
 public class PreparedTx implements PreparedTransaction {
 
@@ -19,16 +25,29 @@ public class PreparedTx implements PreparedTransaction {
 
 	private TransactionService txProcessor;
 
-	private Map<Integer, EventResult> eventResults;
+	private OperationReturnValueHandler[] opReturnValueHandlers;
 
-	public PreparedTx(TransactionRequestBuilder txReqBuilder, TransactionService txProcessor) {
-		this(txReqBuilder, txProcessor, null);
-	}
-
-	public PreparedTx(TransactionRequestBuilder txReqBuilder, TransactionService txProcessor, Map<Integer, EventResult> eventResults) {
+	/**
+	 * 创建一个“就绪交易”对象；
+	 * 
+	 * @param txReqBuilder             交易请求构建器；
+	 * @param txProcessor              交易处理服务；
+	 * @param opReturnValueHandlerList 操作返回值处理器列表；
+	 */
+	public PreparedTx(TransactionRequestBuilder txReqBuilder, TransactionService txProcessor,
+			Collection<OperationReturnValueHandler> opReturnValueHandlerList) {
 		this.txReqBuilder = txReqBuilder;
 		this.txProcessor = txProcessor;
-		this.eventResults = eventResults;
+
+		this.opReturnValueHandlers = opReturnValueHandlerList
+				.toArray(new OperationReturnValueHandler[opReturnValueHandlerList.size()]);
+		// 按照操作索引升序排列;
+		Arrays.sort(opReturnValueHandlers, new Comparator<OperationReturnValueHandler>() {
+			@Override
+			public int compare(OperationReturnValueHandler o1, OperationReturnValueHandler o2) {
+				return o1.getOperationIndex() - o2.getOperationIndex();
+			}
+		});
 	}
 
 	@Override
@@ -59,23 +78,32 @@ public class PreparedTx implements PreparedTransaction {
 
 	@Override
 	public TransactionResponse commit() {
-		TransactionRequest txReq = txReqBuilder.buildRequest();
-		// 发起交易请求；
-		TransactionResponse txResponse = txProcessor.process(txReq);
-		// 重新包装操作集合
-		OperationResult[] operationResults = txResponse.getOperationResults();
-		if (operationResults != null && operationResults.length > 0 &&
-				eventResults != null && !eventResults.isEmpty()) {
-			for (OperationResult operationResult : operationResults) {
-				int opIndex = operationResult.getIndex();
-				EventResult eventResult = eventResults.get(opIndex);
-				if (eventResult != null) {
-					eventResult.done(ContractSerializeUtils.resolve(operationResult.getResult()));
+		try {
+			TransactionRequest txReq = txReqBuilder.buildRequest();
+			// 发起交易请求；
+			TransactionResponse txResponse = txProcessor.process(txReq);
+
+			// 解析返回值；正常的情况下，返回结果列表与结果处理器列表中元素对应的操作索引是一致的；
+			OperationResult[] opResults = txResponse.getOperationResults();
+			if (opResults != null && opResults.length > 0) {
+				if (opResults.length != opReturnValueHandlers.length) {
+					throw new IllegalStateException(String.format(
+							"The operation result list of tx doesn't match it's return value handler list! --[TX.Content.Hash=%s][NumOfResults=%s][NumOfHandlers=%s]",
+							txReq.getTransactionContent().getHash(), opResults.length, opReturnValueHandlers.length));
+				}
+				for (int i = 0; i < opResults.length; i++) {
+					if (opResults[i].getIndex() != opReturnValueHandlers[i].getOperationIndex()) {
+						throw new IllegalStateException(
+								"The operation indexes of the items in the result list and in the handler list don't match!");
+					}
+					opReturnValueHandlers[i].setReturnValue(opResults[i].getResult());
 				}
 			}
+			return txResponse;
+		} catch (Exception e) {
+			//TODO: 出错时清理交易上下文，释放与交易关联对异步等待资源，避免当前线程死锁；
+			
 		}
-		return txResponse;
 	}
 
-
 }
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxBuilder.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxBuilder.java
index 87cabb3a..bf99acdb 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxBuilder.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxBuilder.java
@@ -1,8 +1,9 @@
 package com.jd.blockchain.transaction;
 
+import java.util.Collection;
+
 import com.jd.blockchain.binaryproto.BinaryProtocol;
 import com.jd.blockchain.binaryproto.DataContractRegistry;
-import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.crypto.Crypto;
 import com.jd.blockchain.crypto.HashDigest;
 import com.jd.blockchain.ledger.TransactionBuilder;
@@ -11,9 +12,6 @@ import com.jd.blockchain.ledger.TransactionContentBody;
 import com.jd.blockchain.ledger.TransactionRequestBuilder;
 import com.jd.blockchain.utils.Bytes;
 
-import java.util.HashMap;
-import java.util.Map;
-
 public class TxBuilder implements TransactionBuilder {
 
 	static {
@@ -22,8 +20,6 @@ public class TxBuilder implements TransactionBuilder {
 
 	private BlockchainOperationFactory opFactory = new BlockchainOperationFactory();
 
-	private Map<Object, Integer> contractProxyMap = new HashMap<>();
-
 	private static final String DEFAULT_HASH_ALGORITHM = "SHA256";
 
 	private HashDigest ledgerHash;
@@ -55,6 +51,10 @@ public class TxBuilder implements TransactionBuilder {
 		return txContent;
 	}
 
+	public Collection<OperationReturnValueHandler> getReturnValuehandlers() {
+		return opFactory.getReturnValuetHandlers();
+	}
+
 	@Override
 	public LedgerInitOperationBuilder ledgers() {
 		return opFactory.ledgers();
@@ -94,11 +94,6 @@ public class TxBuilder implements TransactionBuilder {
 		return opFactory.contract(address, contractIntf);
 	}
 
-	@Override
-	public <T> EventResult<T> result(ContractEventExecutor execute) {
-		return opFactory.result(execute);
-	}
-
 	@Override
 	public <T> T contract(String address, Class<T> contractIntf) {
 		return opFactory.contract(address, contractIntf);
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxRequestBuilder.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxRequestBuilder.java
index 5265b4be..7d6701a5 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxRequestBuilder.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxRequestBuilder.java
@@ -71,8 +71,7 @@ public class TxRequestBuilder implements TransactionRequestBuilder {
 	}
 
 	public static SignatureDigest sign(TransactionContent txContent, PrivKey privKey) {
-		return Crypto.getSignatureFunction(privKey.getAlgorithm()).sign(privKey,
-				txContent.getHash().toBytes());
+		return Crypto.getSignatureFunction(privKey.getAlgorithm()).sign(privKey, txContent.getHash().toBytes());
 	}
 
 	public static boolean verifySignature(TransactionContent txContent, SignatureDigest signDigest, PubKey pubKey) {
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxTemplate.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxTemplate.java
index 908ee7fc..cbe7688f 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxTemplate.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxTemplate.java
@@ -1,27 +1,21 @@
 package com.jd.blockchain.transaction;
 
-import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.crypto.HashDigest;
 import com.jd.blockchain.ledger.PreparedTransaction;
 import com.jd.blockchain.ledger.TransactionRequestBuilder;
 import com.jd.blockchain.ledger.TransactionTemplate;
 import com.jd.blockchain.utils.Bytes;
 
-import java.util.HashMap;
-import java.util.Map;
-
 public class TxTemplate implements TransactionTemplate {
 
 	private TxBuilder txBuilder;
 
 	private TransactionService txService;
 
-	private Map<Integer, EventResult> eventResults;
 
 	public TxTemplate(HashDigest ledgerHash, TransactionService txService) {
 		this.txBuilder = new TxBuilder(ledgerHash);
 		this.txService = txService;
-		this.eventResults = new HashMap<>();
 	}
 
 	@Override
@@ -32,7 +26,7 @@ public class TxTemplate implements TransactionTemplate {
 	@Override
 	public PreparedTransaction prepare() {
 		TransactionRequestBuilder txReqBuilder = txBuilder.prepareRequest();
-		return new PreparedTx(txReqBuilder, txService, eventResults);
+		return new PreparedTx(txReqBuilder, txService, txBuilder.getReturnValuehandlers());
 	}
 
 	@Override
@@ -60,25 +54,11 @@ public class TxTemplate implements TransactionTemplate {
 		return txBuilder.contracts();
 	}
 
-//	@Override
-//	public ContractEventSendOperationBuilder contractEvents() {
-//		return txBuilder.contractEvents();
-//	}
-	
 	@Override
 	public <T> T contract(Bytes address, Class<T> contractIntf) {
 		return txBuilder.contract(address, contractIntf);
 	}
 
-	@Override
-	public <T> EventResult<T> result(ContractEventExecutor execute) {
-		EventResult<T> eventResult = txBuilder.result(execute);
-		if (eventResult != null) {
-			eventResults.put(eventResult.opIndex(), eventResult);
-		}
-		return eventResult;
-	}
-
 	@Override
 	public <T> T contract(String address, Class<T> contractIntf) {
 		return txBuilder.contract(address, contractIntf);
diff --git a/source/sdk/sdk-samples/src/main/java/com/jd/blockchain/sdk/samples/SDK_Contract_Demo.java b/source/sdk/sdk-samples/src/main/java/com/jd/blockchain/sdk/samples/SDK_Contract_Demo.java
index 15a023f4..b6a5444a 100644
--- a/source/sdk/sdk-samples/src/main/java/com/jd/blockchain/sdk/samples/SDK_Contract_Demo.java
+++ b/source/sdk/sdk-samples/src/main/java/com/jd/blockchain/sdk/samples/SDK_Contract_Demo.java
@@ -1,164 +1,159 @@
 package com.jd.blockchain.sdk.samples;
 
+import static com.jd.blockchain.sdk.samples.SDKDemo_Constant.readChainCodes;
+import static com.jd.blockchain.transaction.ContractReturns.decode;
+
 import com.jd.blockchain.contract.EventResult;
 import com.jd.blockchain.contract.TransferContract;
-import com.jd.blockchain.ledger.*;
+import com.jd.blockchain.ledger.BlockchainKeyGenerator;
+import com.jd.blockchain.ledger.BlockchainKeypair;
+import com.jd.blockchain.ledger.KVDataEntry;
+import com.jd.blockchain.ledger.PreparedTransaction;
+import com.jd.blockchain.ledger.TransactionResponse;
+import com.jd.blockchain.ledger.TransactionTemplate;
 import com.jd.blockchain.transaction.ContractEventExecutor;
+import com.jd.blockchain.transaction.ContractReturns.ReturnLongValue;
+import com.jd.blockchain.transaction.ContractReturns.ReturnValue;
 import com.jd.blockchain.utils.Bytes;
 
-import static com.jd.blockchain.sdk.samples.SDKDemo_Constant.readChainCodes;
-
 public class SDK_Contract_Demo extends SDK_Base_Demo {
 
-    public static void main(String[] args) {
-        SDK_Contract_Demo demo = new SDK_Contract_Demo();
-        demo.executeContract();
-    }
-
-    public void executeContract() {
-
-        // 发布jar包
-        // 定义交易模板
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-
-        // 将jar包转换为二进制数据
-        byte[] contractCode = readChainCodes("transfer.jar");
-
-        // 生成一个合约账号
-        BlockchainKeypair contractDeployKey = BlockchainKeyGenerator.getInstance().generate();
-
-        // 生成发布合约操作
-        txTpl.contracts().deploy(contractDeployKey.getIdentity(), contractCode);
-
-        // 生成预发布交易；
-        PreparedTransaction ptx = txTpl.prepare();
-
-        // 对交易进行签名
-        ptx.sign(adminKey);
-
-        // 提交并等待共识返回；
-        TransactionResponse txResp = ptx.commit();
-
-        // 获取合约地址
-        Bytes contractAddress = contractDeployKey.getAddress();
-
-        // 打印交易返回信息
-        System.out.printf("Tx[%s] -> BlockHeight = %s, BlockHash = %s, isSuccess = %s, ExecutionState = %s \r\n",
-                txResp.getContentHash().toBase58(), txResp.getBlockHeight(),
-                txResp.getBlockHash().toBase58(), txResp.isSuccess(),
-                txResp.getExecutionState());
-
-        // 打印合约地址
-        System.out.printf("ContractAddress = %s \r\n", contractAddress.toBase58());
-
-        // 注册一个数据账户
-        BlockchainKeypair dataAccount = createDataAccount();
-        // 获取数据账户地址
-        String dataAddress = dataAccount.getAddress().toBase58();
-        // 打印数据账户地址
-        System.out.printf("DataAccountAddress = %s \r\n", dataAddress);
-
-        // 创建两个账号：
-        String account0 = "jd_zhangsan", account1 = "jd_lisi";
-        long account0Money = 3000L, account1Money = 2000L;
-        // 创建两个账户
-        // 使用KV操作创建一个账户
-        System.out.println(create(dataAddress, account0, account0Money, false, null));
-        // 使用合约创建一个账户
-        System.out.println(create(dataAddress, account1, account1Money, true, contractAddress));
-
-        // 转账，使得双方钱达到一致
-        System.out.println(transfer(dataAddress, account0, account1, 500L, contractAddress));
-
-        // 通过合约读取account0的当前信息
-        System.out.printf("Read DataAccountAddress[%s] Account = %s 's money = %s (By Contract)\r\n",
-                dataAddress, account0, readByContract(dataAddress, account0, contractAddress));
-        // 通过KV读取account1的当前信息
-        System.out.printf("Read DataAccountAddress[%s] Account = %s 's money = %s (By KV Operation)\r\n",
-                dataAddress, account1, readByKvOperation(dataAddress, account1));
-
-        // 通过合约读取account0的历史信息
-        System.out.println(readAll(dataAddress, account0, contractAddress));
-        // 通过合约读取account1的历史信息
-        System.out.println(readAll(dataAddress, account1, contractAddress));
-    }
-
-    private String readAll(String address, String account, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.readAll(address, account);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-    private long readByContract(String address, String account, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<Long> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.read(address, account);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-    private long readByKvOperation(String address, String account) {
-        KVDataEntry[] kvDataEntries = blockchainService.getDataEntries(ledgerHash, address, account);
-        if (kvDataEntries == null || kvDataEntries.length == 0) {
-            throw new IllegalStateException(String.format("Ledger %s Service inner Error !!!", ledgerHash.toBase58()));
-        }
-        KVDataEntry kvDataEntry = kvDataEntries[0];
-        if (kvDataEntry.getVersion() == -1) {
-            return 0L;
-        }
-        return (long) (kvDataEntry.getValue());
-    }
-
-
-    private String transfer(String address, String from, String to, long money, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.transfer(address, from, to, money);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-    private BlockchainKeypair createDataAccount() {
-        // 首先注册一个数据账户
-        BlockchainKeypair newDataAccount = BlockchainKeyGenerator.getInstance().generate();
-
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        txTpl.dataAccounts().register(newDataAccount.getIdentity());
-        commit(txTpl);
-        return newDataAccount;
-    }
-
-    private String create(String address, String account, long money, boolean useContract, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        if (useContract) {
-            // 使用合约创建
-            TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-            EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-                transferContract.create(address, account, money);
-                return transferContract;
-            });
-            commit(txTpl);
-            return eventResult.get();
-        } else {
-            // 通过KV创建
-            txTpl.dataAccount(address).setInt64(account, money, -1);
-            TransactionResponse txResp = commit(txTpl);
-            return String.format("DataAccountAddress[%s] -> Create(By KV Operation) Account = %s and Money = %s Success!!! \r\n",
-                    address, account, money);
-        }
-    }
+	public static void main(String[] args) {
+		SDK_Contract_Demo demo = new SDK_Contract_Demo();
+		demo.executeContract();
+	}
+
+	public void executeContract() {
+
+		// 发布jar包
+		// 定义交易模板
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+
+		// 将jar包转换为二进制数据
+		byte[] contractCode = readChainCodes("transfer.jar");
+
+		// 生成一个合约账号
+		BlockchainKeypair contractDeployKey = BlockchainKeyGenerator.getInstance().generate();
+
+		// 生成发布合约操作
+		txTpl.contracts().deploy(contractDeployKey.getIdentity(), contractCode);
+
+		// 生成预发布交易；
+		PreparedTransaction ptx = txTpl.prepare();
+
+		// 对交易进行签名
+		ptx.sign(adminKey);
+
+		// 提交并等待共识返回；
+		TransactionResponse txResp = ptx.commit();
+
+		// 获取合约地址
+		Bytes contractAddress = contractDeployKey.getAddress();
+
+		// 打印交易返回信息
+		System.out.printf("Tx[%s] -> BlockHeight = %s, BlockHash = %s, isSuccess = %s, ExecutionState = %s \r\n",
+				txResp.getContentHash().toBase58(), txResp.getBlockHeight(), txResp.getBlockHash().toBase58(),
+				txResp.isSuccess(), txResp.getExecutionState());
+
+		// 打印合约地址
+		System.out.printf("ContractAddress = %s \r\n", contractAddress.toBase58());
+
+		// 注册一个数据账户
+		BlockchainKeypair dataAccount = createDataAccount();
+		// 获取数据账户地址
+		String dataAddress = dataAccount.getAddress().toBase58();
+		// 打印数据账户地址
+		System.out.printf("DataAccountAddress = %s \r\n", dataAddress);
+
+		// 创建两个账号：
+		String account0 = "jd_zhangsan", account1 = "jd_lisi";
+		long account0Money = 3000L, account1Money = 2000L;
+		// 创建两个账户
+		// 使用KV操作创建一个账户
+		System.out.println(create(dataAddress, account0, account0Money, false, null));
+		// 使用合约创建一个账户
+		System.out.println(create(dataAddress, account1, account1Money, true, contractAddress));
+
+		// 转账，使得双方钱达到一致
+		System.out.println(transfer(dataAddress, account0, account1, 500L, contractAddress));
+
+		// 通过合约读取account0的当前信息
+		System.out.printf("Read DataAccountAddress[%s] Account = %s 's money = %s (By Contract)\r\n", dataAddress,
+				account0, readByContract(dataAddress, account0, contractAddress));
+		// 通过KV读取account1的当前信息
+		System.out.printf("Read DataAccountAddress[%s] Account = %s 's money = %s (By KV Operation)\r\n", dataAddress,
+				account1, readByKvOperation(dataAddress, account1));
+
+		// 通过合约读取account0的历史信息
+		System.out.println(readAll(dataAddress, account0, contractAddress));
+		// 通过合约读取account1的历史信息
+		System.out.println(readAll(dataAddress, account1, contractAddress));
+	}
+
+	private String readAll(String address, String account, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnValue<String> result = decode(transferContract.readAll(address, account));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private long readByContract(String address, String account, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnLongValue result = decode(transferContract.read(address, account));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private long readByKvOperation(String address, String account) {
+		KVDataEntry[] kvDataEntries = blockchainService.getDataEntries(ledgerHash, address, account);
+		if (kvDataEntries == null || kvDataEntries.length == 0) {
+			throw new IllegalStateException(String.format("Ledger %s Service inner Error !!!", ledgerHash.toBase58()));
+		}
+		KVDataEntry kvDataEntry = kvDataEntries[0];
+		if (kvDataEntry.getVersion() == -1) {
+			return 0L;
+		}
+		return (long) (kvDataEntry.getValue());
+	}
+
+	private String transfer(String address, String from, String to, long money, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnValue<String> result = decode(transferContract.transfer(address, from, to, money));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private BlockchainKeypair createDataAccount() {
+		// 首先注册一个数据账户
+		BlockchainKeypair newDataAccount = BlockchainKeyGenerator.getInstance().generate();
+
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		txTpl.dataAccounts().register(newDataAccount.getIdentity());
+		commit(txTpl);
+		return newDataAccount;
+	}
+
+	private String create(String address, String account, long money, boolean useContract, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		if (useContract) {
+			// 使用合约创建
+			TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+			ReturnValue<String> result = decode(transferContract.create(address, account, money));
+			commit(txTpl);
+			return result.get();
+		} else {
+			// 通过KV创建
+			txTpl.dataAccount(address).setInt64(account, money, -1);
+			TransactionResponse txResp = commit(txTpl);
+			return String.format(
+					"DataAccountAddress[%s] -> Create(By KV Operation) Account = %s and Money = %s Success!!! \r\n",
+					address, account, money);
+		}
+	}
 }
diff --git a/source/sdk/sdk-samples/src/test/java/test/com/jd/blockchain/sdk/test/SDKDemo_Contract_Test.java b/source/sdk/sdk-samples/src/test/java/test/com/jd/blockchain/sdk/test/SDKDemo_Contract_Test.java
index 3aa3035c..3959261e 100644
--- a/source/sdk/sdk-samples/src/test/java/test/com/jd/blockchain/sdk/test/SDKDemo_Contract_Test.java
+++ b/source/sdk/sdk-samples/src/test/java/test/com/jd/blockchain/sdk/test/SDKDemo_Contract_Test.java
@@ -1,171 +1,165 @@
 package test.com.jd.blockchain.sdk.test;
 
-import com.jd.blockchain.contract.EventResult;
+import static com.jd.blockchain.sdk.samples.SDKDemo_Constant.readChainCodes;
+import static com.jd.blockchain.transaction.ContractReturns.decode;
+
+import org.junit.Before;
+import org.junit.Test;
+
 import com.jd.blockchain.contract.TransferContract;
 import com.jd.blockchain.crypto.HashDigest;
 import com.jd.blockchain.crypto.PrivKey;
 import com.jd.blockchain.crypto.PubKey;
-import com.jd.blockchain.ledger.*;
+import com.jd.blockchain.ledger.BlockchainKeyGenerator;
+import com.jd.blockchain.ledger.BlockchainKeypair;
+import com.jd.blockchain.ledger.PreparedTransaction;
+import com.jd.blockchain.ledger.TransactionResponse;
+import com.jd.blockchain.ledger.TransactionTemplate;
 import com.jd.blockchain.sdk.BlockchainService;
 import com.jd.blockchain.sdk.client.GatewayServiceFactory;
 import com.jd.blockchain.sdk.samples.SDKDemo_Constant;
 import com.jd.blockchain.tools.keygen.KeyGenCommand;
-import com.jd.blockchain.transaction.ContractEventExecutor;
+import com.jd.blockchain.transaction.ContractReturns.ReturnLongValue;
+import com.jd.blockchain.transaction.ContractReturns.ReturnValue;
 import com.jd.blockchain.utils.Bytes;
-import org.junit.Before;
-import org.junit.Test;
-
-import static com.jd.blockchain.sdk.samples.SDKDemo_Constant.readChainCodes;
 
 public class SDKDemo_Contract_Test {
 
-    private BlockchainKeypair adminKey;
+	private BlockchainKeypair adminKey;
 
-    private HashDigest ledgerHash;
+	private HashDigest ledgerHash;
 
-    private BlockchainService blockchainService;
+	private BlockchainService blockchainService;
 
-    @Before
-    public void init() {
-        // 生成连接网关的账号
-        PrivKey privKey = KeyGenCommand.decodePrivKeyWithRawPassword(SDKDemo_Constant.PRIV_KEYS[0], SDKDemo_Constant.PASSWORD);
+	@Before
+	public void init() {
+		// 生成连接网关的账号
+		PrivKey privKey = KeyGenCommand.decodePrivKeyWithRawPassword(SDKDemo_Constant.PRIV_KEYS[0],
+				SDKDemo_Constant.PASSWORD);
 
-        PubKey pubKey = KeyGenCommand.decodePubKey(SDKDemo_Constant.PUB_KEYS[0]);
+		PubKey pubKey = KeyGenCommand.decodePubKey(SDKDemo_Constant.PUB_KEYS[0]);
 
-        adminKey = new BlockchainKeypair(pubKey, privKey);
+		adminKey = new BlockchainKeypair(pubKey, privKey);
 
-        // 连接网关
-        GatewayServiceFactory serviceFactory = GatewayServiceFactory.connect(SDKDemo_Constant.GW_IPADDR,
-                SDKDemo_Constant.GW_PORT, false, adminKey);
+		// 连接网关
+		GatewayServiceFactory serviceFactory = GatewayServiceFactory.connect(SDKDemo_Constant.GW_IPADDR,
+				SDKDemo_Constant.GW_PORT, false, adminKey);
 
-        blockchainService = serviceFactory.getBlockchainService();
+		blockchainService = serviceFactory.getBlockchainService();
 
-        HashDigest[] ledgerHashs = blockchainService.getLedgerHashs();
+		HashDigest[] ledgerHashs = blockchainService.getLedgerHashs();
 
-        ledgerHash = ledgerHashs[0];
-    }
+		ledgerHash = ledgerHashs[0];
+	}
 
-    @Test
-    public void testContract() {
+	@Test
+	public void testContract() {
 
-        // 发布jar包
-        // 定义交易；
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 发布jar包
+		// 定义交易；
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
 
-        byte[] contractCode = readChainCodes("transfer.jar");
-
-        // 生成一个合约账号
-        BlockchainKeypair contractDeployKey = BlockchainKeyGenerator.getInstance().generate();
-
-        txTpl.contracts().deploy(contractDeployKey.getIdentity(), contractCode);
-
-        // 签名；
-        PreparedTransaction ptx = txTpl.prepare();
-
-        ptx.sign(adminKey);
-
-        // 提交并等待共识返回；
-        TransactionResponse txResp = ptx.commit();
-
-        System.out.println(txResp.isSuccess());
-
-        // 首先注册一个数据账户
-        BlockchainKeypair dataAccount = createDataAccount();
-
-        String dataAddress = dataAccount.getAddress().toBase58();
-
-        Bytes contractAddress = contractDeployKey.getAddress();
-
-        // 创建两个账号：
-        String account0 = "jd_zhangsan", account1 = "jd_lisi";
-        long account0Money = 3000L, account1Money = 2000L;
-        // 创建两个账户
-        // 使用KV创建一个账户
-        System.out.println(create(dataAddress, account0, account0Money, false, null));
-        // 使用合约创建一个账户
-        System.out.println(create(dataAddress, account1, account1Money, true, contractAddress));
-
-        // 转账，使得双方钱达到一致
-        System.out.println(transfer(dataAddress, account0, account1, 500L, contractAddress));
-
-        // 读取当前结果
-        System.out.println(read(dataAddress, account0, contractAddress));
-        System.out.println(read(dataAddress, account1, contractAddress));
-
-        // 读取账号历史信息
-        System.out.println(readAll(dataAddress, account0, contractAddress));
-        System.out.println(readAll(dataAddress, account1, contractAddress));
-    }
-
-    private String readAll(String address, String account, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.readAll(address, account);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-    private long read(String address, String account, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<Long> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.read(address, account);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-    private String transfer(String address, String from, String to, long money, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        // 使用合约创建
-        TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-        EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-            transferContract.transfer(address, from, to, money);
-            return transferContract;
-        });
-        commit(txTpl);
-        return eventResult.get();
-    }
-
-
-    private BlockchainKeypair createDataAccount() {
-        // 首先注册一个数据账户
-        BlockchainKeypair newDataAccount = BlockchainKeyGenerator.getInstance().generate();
-
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        txTpl.dataAccounts().register(newDataAccount.getIdentity());
-        commit(txTpl);
-        return newDataAccount;
-    }
-
-    private String create(String address, String account, long money, boolean useContract, Bytes contractAddress) {
-        TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
-        if (useContract) {
-            // 使用合约创建
-            TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
-            EventResult<String> eventResult = txTpl.result((ContractEventExecutor<TransferContract>) () -> {
-                transferContract.create(address, account, money);
-                return transferContract;
-            });
-            commit(txTpl);
-            return eventResult.get();
-        } else {
-            // 通过KV创建
-            txTpl.dataAccount(address).setInt64(account, money, -1);
-            TransactionResponse txResp = commit(txTpl);
-            return account + money;
-        }
-    }
-
-    private TransactionResponse commit(TransactionTemplate txTpl) {
-        PreparedTransaction ptx = txTpl.prepare();
-        ptx.sign(adminKey);
-        return ptx.commit();
-    }
+		byte[] contractCode = readChainCodes("transfer.jar");
+
+		// 生成一个合约账号
+		BlockchainKeypair contractDeployKey = BlockchainKeyGenerator.getInstance().generate();
+
+		txTpl.contracts().deploy(contractDeployKey.getIdentity(), contractCode);
+
+		// 签名；
+		PreparedTransaction ptx = txTpl.prepare();
+
+		ptx.sign(adminKey);
+
+		// 提交并等待共识返回；
+		TransactionResponse txResp = ptx.commit();
+
+		System.out.println(txResp.isSuccess());
+
+		// 首先注册一个数据账户
+		BlockchainKeypair dataAccount = createDataAccount();
+
+		String dataAddress = dataAccount.getAddress().toBase58();
+
+		Bytes contractAddress = contractDeployKey.getAddress();
+
+		// 创建两个账号：
+		String account0 = "jd_zhangsan", account1 = "jd_lisi";
+		long account0Money = 3000L, account1Money = 2000L;
+		// 创建两个账户
+		// 使用KV创建一个账户
+		System.out.println(create(dataAddress, account0, account0Money, false, null));
+		// 使用合约创建一个账户
+		System.out.println(create(dataAddress, account1, account1Money, true, contractAddress));
+
+		// 转账，使得双方钱达到一致
+		System.out.println(transfer(dataAddress, account0, account1, 500L, contractAddress));
+
+		// 读取当前结果
+		System.out.println(read(dataAddress, account0, contractAddress));
+		System.out.println(read(dataAddress, account1, contractAddress));
+
+		// 读取账号历史信息
+		System.out.println(readAll(dataAddress, account0, contractAddress));
+		System.out.println(readAll(dataAddress, account1, contractAddress));
+	}
+
+	private String readAll(String address, String account, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnValue<String> result = decode(transferContract.readAll(address, account));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private long read(String address, String account, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnLongValue result = decode(transferContract.read(address, account));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private String transfer(String address, String from, String to, long money, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		// 使用合约创建
+		TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+		ReturnValue<String> result = decode(transferContract.transfer(address, from, to, money));
+		commit(txTpl);
+		return result.get();
+	}
+
+	private BlockchainKeypair createDataAccount() {
+		// 首先注册一个数据账户
+		BlockchainKeypair newDataAccount = BlockchainKeyGenerator.getInstance().generate();
+
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		txTpl.dataAccounts().register(newDataAccount.getIdentity());
+		commit(txTpl);
+		return newDataAccount;
+	}
+
+	private String create(String address, String account, long money, boolean useContract, Bytes contractAddress) {
+		TransactionTemplate txTpl = blockchainService.newTransaction(ledgerHash);
+		if (useContract) {
+			// 使用合约创建
+			TransferContract transferContract = txTpl.contract(contractAddress, TransferContract.class);
+			ReturnValue<String> result = decode(transferContract.create(address, account, money));
+			commit(txTpl);
+			return result.get();
+		} else {
+			// 通过KV创建
+			txTpl.dataAccount(address).setInt64(account, money, -1);
+			TransactionResponse txResp = commit(txTpl);
+			return account + money;
+		}
+	}
+
+	private TransactionResponse commit(TransactionTemplate txTpl) {
+		PreparedTransaction ptx = txTpl.prepare();
+		ptx.sign(adminKey);
+		return ptx.commit();
+	}
 }
diff --git a/source/test/test-integration/src/test/java/test/com/jd/blockchain/intgr/IntegrationBase.java b/source/test/test-integration/src/test/java/test/com/jd/blockchain/intgr/IntegrationBase.java
index 66aa8b5e..034c3a6c 100644
--- a/source/test/test-integration/src/test/java/test/com/jd/blockchain/intgr/IntegrationBase.java
+++ b/source/test/test-integration/src/test/java/test/com/jd/blockchain/intgr/IntegrationBase.java
@@ -24,24 +24,35 @@ import java.util.Random;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.atomic.AtomicLong;
 
-import com.jd.blockchain.contract.ContractSerializeUtils;
-import com.jd.blockchain.contract.EventResult;
-import com.jd.blockchain.contract.ReadContract;
-import com.jd.blockchain.ledger.*;
-import com.jd.blockchain.transaction.ContractEventExecutor;
 import org.apache.commons.io.FileUtils;
 import org.springframework.core.io.ClassPathResource;
 
 import com.jd.blockchain.binaryproto.DataContractRegistry;
+import com.jd.blockchain.contract.ContractSerializeUtils;
+import com.jd.blockchain.contract.EventResult;
+import com.jd.blockchain.contract.ReadContract;
 import com.jd.blockchain.crypto.AddressEncoding;
 import com.jd.blockchain.crypto.AsymmetricKeypair;
 import com.jd.blockchain.crypto.HashDigest;
+import com.jd.blockchain.ledger.BlockchainKeyGenerator;
+import com.jd.blockchain.ledger.BlockchainKeypair;
+import com.jd.blockchain.ledger.KVDataEntry;
+import com.jd.blockchain.ledger.LedgerBlock;
+import com.jd.blockchain.ledger.LedgerInitOperation;
+import com.jd.blockchain.ledger.OperationResult;
+import com.jd.blockchain.ledger.PreparedTransaction;
+import com.jd.blockchain.ledger.TransactionResponse;
+import com.jd.blockchain.ledger.TransactionState;
+import com.jd.blockchain.ledger.TransactionTemplate;
+import com.jd.blockchain.ledger.UserRegisterOperation;
 import com.jd.blockchain.ledger.core.LedgerRepository;
 import com.jd.blockchain.ledger.core.impl.LedgerManager;
 import com.jd.blockchain.sdk.BlockchainService;
 import com.jd.blockchain.storage.service.DbConnection;
 import com.jd.blockchain.storage.service.DbConnectionFactory;
 import com.jd.blockchain.tools.initializer.LedgerBindingConfig;
+import com.jd.blockchain.transaction.ContractEventExecutor;
+import static com.jd.blockchain.transaction.ContractReturns.*;
 import com.jd.blockchain.utils.Bytes;
 import com.jd.blockchain.utils.concurrent.ThreadInvoker;
 import com.jd.blockchain.utils.net.NetworkAddress;
@@ -576,10 +587,7 @@ public class IntegrationBase {
 
 		ReadContract readContract1 = txContract.contract(contractDeployKey.getAddress(), ReadContract.class);
 
-		EventResult<String> read1 = txContract.result((ContractEventExecutor<ReadContract>) () -> {
-			readContract1.read(newDataAccount.getAddress().toBase58(), key1);
-			return readContract1;
-		});
+		ReturnValue<String> result1 = decode(readContract1.read(newDataAccount.getAddress().toBase58(), key1));
 
 		ReadContract readContract2 = txContract.contract(contractDeployKey.getAddress(), ReadContract.class);
 
@@ -587,10 +595,7 @@ public class IntegrationBase {
 
 		ReadContract readContract3 = txContract.contract(contractDeployKey.getAddress(), ReadContract.class);
 
-		EventResult<Long> read3 = txContract.result((ContractEventExecutor<ReadContract>) () -> {
-			readContract3.readVersion(newDataAccount.getAddress().toBase58(), key2);
-			return readContract3;
-		});
+		ReturnValue<Long> result3 = decode(readContract3.readVersion(newDataAccount.getAddress().toBase58(), key2));
 
 		// 签名；
 		PreparedTransaction contractPtx = txContract.prepare();
@@ -602,8 +607,8 @@ public class IntegrationBase {
 		OperationResult[] operationResults = readTxResp.getOperationResults();
 
 		// 通过EventResult获取结果
-		System.out.printf("readContract1.result = %s \r\n", read1.get());
-		System.out.printf("readContract3.result = %s \r\n", read3.get());
+		System.out.printf("readContract1.result = %s \r\n", result1.get());
+		System.out.printf("readContract3.result = %s \r\n", result3.get());
 
 
 		// 打印结果
diff --git a/source/tools/tools-mocker/src/main/java/com/jd/blockchain/mocker/handler/MockerContractExeHandle.java b/source/tools/tools-mocker/src/main/java/com/jd/blockchain/mocker/handler/MockerContractExeHandle.java
index ec321728..8b31a389 100644
--- a/source/tools/tools-mocker/src/main/java/com/jd/blockchain/mocker/handler/MockerContractExeHandle.java
+++ b/source/tools/tools-mocker/src/main/java/com/jd/blockchain/mocker/handler/MockerContractExeHandle.java
@@ -11,6 +11,7 @@ import com.jd.blockchain.contract.EventProcessingAware;
 import com.jd.blockchain.contract.LedgerContext;
 import com.jd.blockchain.crypto.HashDigest;
 import com.jd.blockchain.ledger.BlockchainIdentity;
+import com.jd.blockchain.ledger.BytesValue;
 import com.jd.blockchain.ledger.ContractEventSendOperation;
 import com.jd.blockchain.ledger.Operation;
 import com.jd.blockchain.ledger.TransactionRequest;
@@ -33,7 +34,7 @@ public class MockerContractExeHandle implements OperationHandle {
 	private HashDigest ledgerHash;
 
 	@Override
-	public byte[] process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
+	public BytesValue process(Operation op, LedgerDataSet dataset, TransactionRequestContext requestContext,
 			LedgerDataSet previousBlockDataset, OperationHandleContext opHandleContext, LedgerService ledgerService) {
 		ContractEventSendOperation contractOP = (ContractEventSendOperation) op;
 
@@ -76,11 +77,6 @@ public class MockerContractExeHandle implements OperationHandle {
 		return ContractSerializeUtils.serialize(result);
 	}
 
-//	@Override
-//	public AsyncFuture<byte[]> asyncProcess(Operation op, LedgerDataSet newBlockDataset, TransactionRequestContext requestContext, LedgerDataSet previousBlockDataset, OperationHandleContext handleContext, LedgerService ledgerService) {
-//		return null;
-//	}
-
 	@Override
 	public boolean support(Class<?> operationType) {
 		return ContractEventSendOperation.class.isAssignableFrom(operationType);