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 a9bd77e8..59cb3111 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
@@ -1,26 +1,30 @@
-package com.jd.blockchain.ledger;
-
-import com.jd.blockchain.binaryproto.DataContract;
-import com.jd.blockchain.binaryproto.DataField;
-import com.jd.blockchain.binaryproto.PrimitiveType;
-import com.jd.blockchain.consts.DataCodes;
-import com.jd.blockchain.utils.Bytes;
-
-/**
- * @author huanghaiquan
- *
- */
-@DataContract(code= DataCodes.TX_OP_CONTRACT_EVENT_SEND)
-public interface ContractEventSendOperation extends Operation {
-	
-	@DataField(order=2, primitiveType=PrimitiveType.BYTES)
-	Bytes getContractAddress();
-	
-	@DataField(order=3, primitiveType=PrimitiveType.TEXT)
-	String getEvent();
-	
-	
-	@DataField(order=4, primitiveType=PrimitiveType.BYTES)
-	byte[] getArgs();
-	
-}
+package com.jd.blockchain.ledger;
+
+import com.jd.blockchain.binaryproto.DataContract;
+import com.jd.blockchain.binaryproto.DataField;
+import com.jd.blockchain.binaryproto.PrimitiveType;
+import com.jd.blockchain.consts.DataCodes;
+import com.jd.blockchain.utils.Bytes;
+
+/**
+ * @author huanghaiquan
+ *
+ */
+@DataContract(code= DataCodes.TX_OP_CONTRACT_EVENT_SEND)
+public interface ContractEventSendOperation extends Operation {
+	
+	@DataField(order=2, primitiveType=PrimitiveType.BYTES)
+	Bytes getContractAddress();
+	
+	@DataField(order=3, primitiveType=PrimitiveType.TEXT)
+	String getEvent();
+	
+	
+	@DataField(order=4, primitiveType=PrimitiveType.BYTES)
+	byte[] getArgs();
+
+	//获得交易操作时间;
+	@DataField(order=5, primitiveType=PrimitiveType.INT64)
+	Long getTxOpTime();
+	
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContent.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContent.java
index 5203835a..96cdf58b 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContent.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContent.java
@@ -1,21 +1,21 @@
-package com.jd.blockchain.ledger;
-
-import com.jd.blockchain.binaryproto.DataContract;
-import com.jd.blockchain.binaryproto.DataField;
-import com.jd.blockchain.binaryproto.PrimitiveType;
-import com.jd.blockchain.consts.DataCodes;
-import com.jd.blockchain.crypto.HashDigest;
-
-/**
- * 交易内容；
- * 
- * @author huanghaiquan
- *
- */
-@DataContract(code= DataCodes.TX_CONTENT)
-public interface TransactionContent extends TransactionContentBody, HashObject {
-    @Override
-    @DataField(order=1, primitiveType = PrimitiveType.BYTES)
-    HashDigest getHash();
-
-}
+package com.jd.blockchain.ledger;
+
+import com.jd.blockchain.binaryproto.DataContract;
+import com.jd.blockchain.binaryproto.DataField;
+import com.jd.blockchain.binaryproto.PrimitiveType;
+import com.jd.blockchain.consts.DataCodes;
+import com.jd.blockchain.crypto.HashDigest;
+
+/**
+ * 交易内容；
+ * 
+ * @author huanghaiquan
+ *
+ */
+@DataContract(code= DataCodes.TX_CONTENT)
+public interface TransactionContent extends TransactionContentBody, HashObject {
+    @Override
+    @DataField(order=1, primitiveType = PrimitiveType.BYTES)
+    HashDigest getHash();
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContentBody.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContentBody.java
index 14ce61ac..e1819224 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContentBody.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/ledger/TransactionContentBody.java
@@ -1,36 +1,36 @@
-package com.jd.blockchain.ledger;
-
-import com.jd.blockchain.binaryproto.DataContract;
-import com.jd.blockchain.binaryproto.DataField;
-import com.jd.blockchain.binaryproto.PrimitiveType;
-import com.jd.blockchain.consts.DataCodes;
-import com.jd.blockchain.crypto.HashDigest;
-
-/**
- * 交易内容；
- * 
- * @author huanghaiquan
- *
- */
-@DataContract(code = DataCodes.TX_CONTENT_BODY)
-public interface TransactionContentBody {
-
-	/**
-	 * 执行交易的账本地址；
-	 * 
-	 * 注：除了账本的创世交易之外，任何交易的账本地址都不允许为 null;
-	 *
-	 * @return
-	 */
-	@DataField(order = 1, primitiveType = PrimitiveType.BYTES)
-	HashDigest getLedgerHash();
-
-	/**
-	 * 操作列表；
-	 * 
-	 * @return
-	 */
-	@DataField(order = 2, list = true, refContract = true, genericContract = true)
-	Operation[] getOperations();
-
-}
+package com.jd.blockchain.ledger;
+
+import com.jd.blockchain.binaryproto.DataContract;
+import com.jd.blockchain.binaryproto.DataField;
+import com.jd.blockchain.binaryproto.PrimitiveType;
+import com.jd.blockchain.consts.DataCodes;
+import com.jd.blockchain.crypto.HashDigest;
+
+/**
+ * 交易内容；
+ * 
+ * @author huanghaiquan
+ *
+ */
+@DataContract(code = DataCodes.TX_CONTENT_BODY)
+public interface TransactionContentBody {
+
+	/**
+	 * 执行交易的账本地址；
+	 * 
+	 * 注：除了账本的创世交易之外，任何交易的账本地址都不允许为 null;
+	 *
+	 * @return
+	 */
+	@DataField(order = 1, primitiveType = PrimitiveType.BYTES)
+	HashDigest getLedgerHash();
+
+	/**
+	 * 操作列表；
+	 * 
+	 * @return
+	 */
+	@DataField(order = 2, list = true, refContract = true, genericContract = true)
+	Operation[] getOperations();
+
+}
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 29777b96..c5ad6db2 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
@@ -1,40 +1,47 @@
-package com.jd.blockchain.transaction;
-
-import com.jd.blockchain.binaryproto.DataContractRegistry;
-import com.jd.blockchain.ledger.ContractEventSendOperation;
-import com.jd.blockchain.utils.Bytes;
-
-public class ContractEventSendOpTemplate implements ContractEventSendOperation {
-	static {
-		DataContractRegistry.register(ContractEventSendOperation.class);
-	}
-
-	private Bytes contractAddress;
-	private byte[] args;
-	private String event;
-
-	public ContractEventSendOpTemplate() {
-	}
-
-	public ContractEventSendOpTemplate(Bytes contractAddress, String event, byte[] args) {
-		this.contractAddress = contractAddress;
-		this.event = event;
-		this.args = args;
-	}
-
-	@Override
-	public Bytes getContractAddress() {
-		return contractAddress;
-	}
-
-	@Override
-	public String getEvent() {
-		return event;
-	}
-
-	@Override
-	public byte[] getArgs() {
-		return args;
-	}
-
-}
+package com.jd.blockchain.transaction;
+
+import com.jd.blockchain.binaryproto.DataContractRegistry;
+import com.jd.blockchain.ledger.ContractEventSendOperation;
+import com.jd.blockchain.utils.Bytes;
+
+public class ContractEventSendOpTemplate implements ContractEventSendOperation {
+	static {
+		DataContractRegistry.register(ContractEventSendOperation.class);
+	}
+
+	private Bytes contractAddress;
+	private byte[] args;
+	private String event;
+	//交易操作时间;
+	private Long txOpTime;
+
+	public ContractEventSendOpTemplate() {
+	}
+
+	public ContractEventSendOpTemplate(Bytes contractAddress, String event, byte[] args) {
+		this.contractAddress = contractAddress;
+		this.event = event;
+		this.args = args;
+		this.txOpTime = System.currentTimeMillis();
+	}
+
+	@Override
+	public Bytes getContractAddress() {
+		return contractAddress;
+	}
+
+	@Override
+	public String getEvent() {
+		return event;
+	}
+
+	@Override
+	public byte[] getArgs() {
+		return args;
+	}
+
+	@Override
+	public Long getTxOpTime() {
+		return txOpTime;
+	}
+}
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 1f315482..19d0020a 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
@@ -1,93 +1,93 @@
-package com.jd.blockchain.transaction;
-
-import com.jd.blockchain.binaryproto.BinaryProtocol;
-import com.jd.blockchain.binaryproto.DataContractRegistry;
-import com.jd.blockchain.crypto.Crypto;
-import com.jd.blockchain.crypto.HashDigest;
-import com.jd.blockchain.ledger.TransactionBuilder;
-import com.jd.blockchain.ledger.TransactionContent;
-import com.jd.blockchain.ledger.TransactionContentBody;
-import com.jd.blockchain.ledger.TransactionRequestBuilder;
-import com.jd.blockchain.utils.Bytes;
-
-public class TxBuilder implements TransactionBuilder {
-
-	static {
-		DataContractRegistry.register(TransactionContentBody.class);
-	}
-
-	private BlockchainOperationFactory opFactory = new BlockchainOperationFactory();
-
-	private static final String DEFAULT_HASH_ALGORITHM = "SHA256";
-	
-	private HashDigest ledgerHash;
-
-	public TxBuilder(HashDigest ledgerHash) {
-		this.ledgerHash = ledgerHash;
-	}
-
-	@Override
-	public HashDigest getLedgerHash() {
-		return ledgerHash;
-	}
-
-	@Override
-	public TransactionRequestBuilder prepareRequest() {
-		TransactionContent txContent = prepareContent();
-		return new TxRequestBuilder(txContent);
-	}
-	
-	@Override
-	public TransactionContent prepareContent() {
-		TxContentBlob txContent = new TxContentBlob(ledgerHash);
-		txContent.addOperations(opFactory.getOperations());
-		
-		byte[] contentBodyBytes = BinaryProtocol.encode(txContent, TransactionContentBody.class);
-		HashDigest contentHash = Crypto.getHashFunction(DEFAULT_HASH_ALGORITHM).hash(contentBodyBytes);
-		txContent.setHash(contentHash);
-		
-		return txContent;
-	}
-
-	@Override
-	public LedgerInitOperationBuilder ledgers() {
-		return opFactory.ledgers();
-	}
-	
-	@Override
-	public UserRegisterOperationBuilder users() {
-		return opFactory.users();
-	}
-
-	@Override
-	public DataAccountRegisterOperationBuilder dataAccounts() {
-		return opFactory.dataAccounts();
-	}
-	
-	@Override
-	public DataAccountKVSetOperationBuilder dataAccount(String accountAddress) {
-		return opFactory.dataAccount(accountAddress);
-	}
-
-	@Override
-	public DataAccountKVSetOperationBuilder dataAccount(Bytes accountAddress) {
-		return opFactory.dataAccount(accountAddress);
-	}
-
-	@Override
-	public ContractCodeDeployOperationBuilder contracts() {
-		return opFactory.contracts();
-	}
-
-	@Override
-	public ContractEventSendOperationBuilder contractEvents() {
-		return opFactory.contractEvents();
-	}
-	
-	@Override
-	public <T> T contract(String address, Class<T> contractIntf) {
-		// TODO Auto-generated method stub
-		throw new IllegalStateException("Not implemented.");
-	}
-
-}
+package com.jd.blockchain.transaction;
+
+import com.jd.blockchain.binaryproto.BinaryProtocol;
+import com.jd.blockchain.binaryproto.DataContractRegistry;
+import com.jd.blockchain.crypto.Crypto;
+import com.jd.blockchain.crypto.HashDigest;
+import com.jd.blockchain.ledger.TransactionBuilder;
+import com.jd.blockchain.ledger.TransactionContent;
+import com.jd.blockchain.ledger.TransactionContentBody;
+import com.jd.blockchain.ledger.TransactionRequestBuilder;
+import com.jd.blockchain.utils.Bytes;
+
+public class TxBuilder implements TransactionBuilder {
+
+	static {
+		DataContractRegistry.register(TransactionContentBody.class);
+	}
+
+	private BlockchainOperationFactory opFactory = new BlockchainOperationFactory();
+
+	private static final String DEFAULT_HASH_ALGORITHM = "SHA256";
+	
+	private HashDigest ledgerHash;
+
+	public TxBuilder(HashDigest ledgerHash) {
+		this.ledgerHash = ledgerHash;
+	}
+
+	@Override
+	public HashDigest getLedgerHash() {
+		return ledgerHash;
+	}
+
+	@Override
+	public TransactionRequestBuilder prepareRequest() {
+		TransactionContent txContent = prepareContent();
+		return new TxRequestBuilder(txContent);
+	}
+	
+	@Override
+	public TransactionContent prepareContent() {
+		TxContentBlob txContent = new TxContentBlob(ledgerHash);
+		txContent.addOperations(opFactory.getOperations());
+		
+		byte[] contentBodyBytes = BinaryProtocol.encode(txContent, TransactionContentBody.class);
+		HashDigest contentHash = Crypto.getHashFunction(DEFAULT_HASH_ALGORITHM).hash(contentBodyBytes);
+		txContent.setHash(contentHash);
+		
+		return txContent;
+	}
+
+	@Override
+	public LedgerInitOperationBuilder ledgers() {
+		return opFactory.ledgers();
+	}
+	
+	@Override
+	public UserRegisterOperationBuilder users() {
+		return opFactory.users();
+	}
+
+	@Override
+	public DataAccountRegisterOperationBuilder dataAccounts() {
+		return opFactory.dataAccounts();
+	}
+	
+	@Override
+	public DataAccountKVSetOperationBuilder dataAccount(String accountAddress) {
+		return opFactory.dataAccount(accountAddress);
+	}
+
+	@Override
+	public DataAccountKVSetOperationBuilder dataAccount(Bytes accountAddress) {
+		return opFactory.dataAccount(accountAddress);
+	}
+
+	@Override
+	public ContractCodeDeployOperationBuilder contracts() {
+		return opFactory.contracts();
+	}
+
+	@Override
+	public ContractEventSendOperationBuilder contractEvents() {
+		return opFactory.contractEvents();
+	}
+	
+	@Override
+	public <T> T contract(String address, Class<T> contractIntf) {
+		// TODO Auto-generated method stub
+		throw new IllegalStateException("Not implemented.");
+	}
+
+}
diff --git a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxContentBlob.java b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxContentBlob.java
index f1cb2993..ccbe3a98 100644
--- a/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxContentBlob.java
+++ b/source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/TxContentBlob.java
@@ -1,91 +1,91 @@
-package com.jd.blockchain.transaction;
-
-import java.util.ArrayList;
-import java.util.Collection;
-import java.util.List;
-
-import com.jd.blockchain.crypto.HashDigest;
-import com.jd.blockchain.ledger.Operation;
-import com.jd.blockchain.ledger.TransactionContent;
-import com.jd.blockchain.utils.io.NumberMask;
-
-/**
- * 交易内容的数据块；
- * <p>
- * 
- * 包含原始交易请求的数据块；
- * 
- * @author huanghaiquan
- *
- */
-public class TxContentBlob implements TransactionContent {
-
-	/**
-	 * 操作数量的最大值；
-	 */
-	public static final int MAX_OP_COUNT = NumberMask.SHORT.MAX_BOUNDARY_SIZE;
-
-	private List<Operation> operationList = new ArrayList<Operation>();
-
-	private HashDigest hash;
-
-	private HashDigest ledgerHash;
-
-	public TxContentBlob(HashDigest ledgerHash) {
-		this.ledgerHash = ledgerHash;
-	}
-
-	/**
-	 * 交易内容的哈希值；
-	 */
-	@Override
-	public HashDigest getHash() {
-		return this.hash;
-	}
-
-	/**
-	 * 更新交易内容的哈希值；
-	 * <p>
-	 * 注：当前对象只充当值对象，不校验指定哈希值的完整性，调用者应该在外部实施完整性校验；
-	 * 
-	 * @param hash
-	 */
-	public void setHash(HashDigest hash) {
-		this.hash = hash;
-	}
-
-	/**
-	 * 交易请求链的hash
-	 *
-	 * @return
-	 */
-	@Override
-	public HashDigest getLedgerHash() {
-		return ledgerHash;
-	}
-
-	public void setLedgerHash(HashDigest ledgerHash) {
-		this.ledgerHash = ledgerHash;
-	}
-
-	@Override
-	public Operation[] getOperations() {
-		return operationList.toArray(new Operation[operationList.size()]);
-	}
-
-	public void setOperations(Object[] operations) {
-		// in array's case ,cast will failed!
-		for (Object operation : operations) {
-			Operation op = (Operation) operation;
-			addOperation(op);
-		}
-	}
-
-	public void addOperation(Operation operation) {
-		operationList.add(operation);
-	}
-
-	public void addOperations(Collection<Operation> operations) {
-		operationList.addAll(operations);
-	}
-}
+package com.jd.blockchain.transaction;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import com.jd.blockchain.crypto.HashDigest;
+import com.jd.blockchain.ledger.Operation;
+import com.jd.blockchain.ledger.TransactionContent;
+import com.jd.blockchain.utils.io.NumberMask;
+
+/**
+ * 交易内容的数据块；
+ * <p>
+ * 
+ * 包含原始交易请求的数据块；
+ * 
+ * @author huanghaiquan
+ *
+ */
+public class TxContentBlob implements TransactionContent {
+
+	/**
+	 * 操作数量的最大值；
+	 */
+	public static final int MAX_OP_COUNT = NumberMask.SHORT.MAX_BOUNDARY_SIZE;
+
+	private List<Operation> operationList = new ArrayList<Operation>();
+
+	private HashDigest hash;
+
+	private HashDigest ledgerHash;
+
+	public TxContentBlob(HashDigest ledgerHash) {
+		this.ledgerHash = ledgerHash;
+	}
+
+	/**
+	 * 交易内容的哈希值；
+	 */
+	@Override
+	public HashDigest getHash() {
+		return this.hash;
+	}
+
+	/**
+	 * 更新交易内容的哈希值；
+	 * <p>
+	 * 注：当前对象只充当值对象，不校验指定哈希值的完整性，调用者应该在外部实施完整性校验；
+	 * 
+	 * @param hash
+	 */
+	public void setHash(HashDigest hash) {
+		this.hash = hash;
+	}
+
+	/**
+	 * 交易请求链的hash
+	 *
+	 * @return
+	 */
+	@Override
+	public HashDigest getLedgerHash() {
+		return ledgerHash;
+	}
+
+	public void setLedgerHash(HashDigest ledgerHash) {
+		this.ledgerHash = ledgerHash;
+	}
+
+	@Override
+	public Operation[] getOperations() {
+		return operationList.toArray(new Operation[operationList.size()]);
+	}
+
+	public void setOperations(Object[] operations) {
+		// in array's case ,cast will failed!
+		for (Object operation : operations) {
+			Operation op = (Operation) operation;
+			addOperation(op);
+		}
+	}
+
+	public void addOperation(Operation operation) {
+		operationList.add(operation);
+	}
+
+	public void addOperations(Collection<Operation> operations) {
+		operationList.addAll(operations);
+	}
+}
diff --git a/source/utils/utils-common/src/main/java/com/jd/blockchain/utils/ArrayUtils.java b/source/utils/utils-common/src/main/java/com/jd/blockchain/utils/ArrayUtils.java
index bb04964e..c787a014 100644
--- a/source/utils/utils-common/src/main/java/com/jd/blockchain/utils/ArrayUtils.java
+++ b/source/utils/utils-common/src/main/java/com/jd/blockchain/utils/ArrayUtils.java
@@ -1,14 +1,7 @@
 package com.jd.blockchain.utils;
 
 import java.lang.reflect.Array;
-import java.util.Collections;
-import java.util.HashSet;
-import java.util.Iterator;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Set;
-import java.util.SortedSet;
-import java.util.TreeSet;
+import java.util.*;
 
 /**
  * @author haiq
@@ -83,5 +76,4 @@ public abstract class ArrayUtils {
 		}
 		return new ReadonlyArrayListWrapper<T>(array, fromIndex, toIndex);
 	}
-
 }