According to Haiquan's suggestion to modify the codes for improving the performance. must admit: these proposals are very valuable.

source/ledger/ledger-model/src/main/java/com/jd/blockchain/contract/ContractSerializeUtils.java

@@ -42,7 +42,6 @@ public class ContractSerializeUtils {
         }
 
         Class<?>[] classTypes = method.getParameterTypes();
-        Annotation [][] annotations = method.getParameterAnnotations();
         byte[][] result = new byte[classTypes.length][];
         //将method中形参转换为实体对象，每个形参都必须为@DataContract类型;每个形参使用系统的BinaryProtocol来进行序列化,如果有5个参数，则使用5次序列化;
         int sum = 0;

source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxy.java

@@ -2,6 +2,8 @@ package com.jd.blockchain.transaction;
 
 import com.jd.blockchain.contract.ContractSerializeUtils;
 import com.jd.blockchain.utils.Bytes;
+import com.jd.blockchain.utils.IllegalDataException;
+
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;
 
@@ -18,17 +20,15 @@ public class ContractInvocationProxy implements InvocationHandler {
 	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;
 	}
 
 	@Override
 	public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
-
-		if(contractType == null){
-			return "contractType == null, no invoke really.";
-		}
-
 		String event = contractType.getEvent(method);
 		if (event == null) {
 			// 适配 Object 对象的方法；

source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractInvocationProxyBuilder.java

@@ -4,16 +4,18 @@ import com.jd.blockchain.contract.Contract;
 import com.jd.blockchain.contract.ContractEvent;
 import com.jd.blockchain.utils.BaseConstant;
 import com.jd.blockchain.utils.Bytes;
+import com.jd.blockchain.utils.IllegalDataException;
 
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class ContractInvocationProxyBuilder {
 
-	private Map<Class<?>, ContractType> contractTypes = new HashMap<Class<?>, ContractType>();
+	private Map<Class<?>, ContractType> contractTypes = new ConcurrentHashMap<>();
 
 	public <T> T create(String address, Class<T> contractIntf, ContractEventSendOperationBuilder contractEventBuilder) {
 		return create(Bytes.fromBase58(address), contractIntf, contractEventBuilder);
@@ -39,12 +41,12 @@ public class ContractInvocationProxyBuilder {
 		
 		// 判断是否是标注了合约的接口类型；
 		if (!isContractType(contractIntf)){
-			return null;
+			throw new IllegalDataException("is not Contract Type, becaust there is not @Contract.");
 		}
 
 		// 解析合约事件处理方法，检查是否有重名；
 		if(!isUniqueEvent(contractIntf)){
-			return null;
+			throw new IllegalDataException("there is repeat definition of contractEvent to @ContractEvent.");
 		}
 
 		// TODO 检查是否不支持的参数类型；
@@ -63,22 +65,21 @@ public class ContractInvocationProxyBuilder {
 		Map<Method, Annotation[]> methodAnnoMap = new HashMap<Method, Annotation[]>();
 		Map<String, Method> annoMethodMap = new HashMap<String, Method>();
 		for (int i = 0; i < classMethods.length; i++) {
-			Annotation[] a = classMethods[i].getDeclaredAnnotations();
-			methodAnnoMap.put(classMethods[i], a);
+			Annotation[] annotations = classMethods[i].getDeclaredAnnotations();
+			methodAnnoMap.put(classMethods[i], annotations);
 			// if current method contains @ContractEvent，then put it in this map;
-			for (Annotation annotation_ : a) {
-				if (classMethods[i].isAnnotationPresent(ContractEvent.class)) {
-					Object obj = classMethods[i].getAnnotation(ContractEvent.class);
-					String annoAllName = obj.toString();
-					// format:@com.jd.blockchain.contract.model.ContractEvent(name=transfer-asset)
-					String eventName_ = obj.toString().substring(BaseConstant.CONTRACT_EVENT_PREFIX.length(),
-							annoAllName.length() - 1);
-					//if annoMethodMap has contained the eventName, too many same eventNames exists probably, say NO!
-					if(annoMethodMap.containsKey(eventName_)){
-						isUnique = false;
-					}
-					annoMethodMap.put(eventName_, classMethods[i]);
+			Method curMethod = classMethods[i];
+			ContractEvent contractEvent = curMethod.getAnnotation(ContractEvent.class);
+			if (contractEvent != null) {
+				Object obj = classMethods[i].getAnnotation(ContractEvent.class);
+				String annoAllName = obj.toString();
+				// format:@com.jd.blockchain.contract.model.ContractEvent(name=transfer-asset)
+				String eventName_ = contractEvent.name();
+				//if annoMethodMap has contained the eventName, too many same eventNames exists probably, say NO!
+				if(annoMethodMap.containsKey(eventName_)){
+					isUnique = false;
 				}
+				annoMethodMap.put(eventName_, classMethods[i]);
 			}
 		}
 

source/ledger/ledger-model/src/main/java/com/jd/blockchain/transaction/ContractType.java

@@ -2,16 +2,17 @@ package com.jd.blockchain.transaction;
 
 import com.jd.blockchain.contract.ContractEvent;
 import com.jd.blockchain.contract.ContractException;
-import com.jd.blockchain.utils.BaseConstant;
 
 import java.lang.reflect.Method;
-import java.util.*;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Set;
 
 public class ContractType {
 
 	private String name;
 
-	private SortedMap<String, Method> events = Collections.synchronizedSortedMap(new TreeMap<>());
+	private Map<String, Method> events = new HashMap<>();
 
 	private Map<Method, String> handleMethods = new HashMap<>();;
 
@@ -57,12 +58,9 @@ public class ContractType {
 		Method[] classMethods = contractIntf.getDeclaredMethods();
 		for (Method method : classMethods) {
 			// if current method contains @ContractEvent，then put it in this map;
-			if (method.isAnnotationPresent(ContractEvent.class)) {
-				Object obj = method.getAnnotation(ContractEvent.class);
-				String annoAllName = obj.toString();
-				// format:@com.jd.blockchain.contract.model.ContractEvent(name=transfer-asset)
-				String eventName_ = obj.toString().substring(BaseConstant.CONTRACT_EVENT_PREFIX.length(),
-						annoAllName.length() - 1);
+			ContractEvent contractEvent = method.getAnnotation(ContractEvent.class);
+			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_)){
 					throw new ContractException("too many same eventNames exists in the contract, check it.");

source/sdk/sdk-samples/src/test/java/test/com/jd/blockchain/sdk/test/SDK_Contract_Test.java

@@ -68,7 +68,7 @@ public class SDK_Contract_Test {
 	public void demoContract1() {
 		// 发起交易；
 		TransactionTemplate txTemp = bcsrv.newTransaction(ledgerHash);
-		String contractAddress = "LdeNmSdtUqVfURfcVxmJda252HC4FYHYfGTQv";
+		String contractAddress = "LdeNw7PsVrXTrffQMfYLTvqscDyQ8QCUPruTS";
 		AssetContract2 assetContract = txTemp.contract(contractAddress, AssetContract2.class);
 		TransactionContentBody transactionContentBody = new TransactionContentBody() {
 			@Override

source/utils/utils-common/src/main/java/com/jd/blockchain/utils/BaseConstant.java

@@ -22,7 +22,7 @@ public class BaseConstant {
     public static final String SYS_CONTRACT_PROPS_NAME = "sys-contract.properties";
     public static final String CONTRACT_MAIN_CLASS_KEY = "contract";
 
-    public static final String CONTRACT_EVENT_PREFIX="@com.jd.blockchain.contract.ContractEvent(name=";
+//    public static final String CONTRACT_EVENT_PREFIX="@com.jd.blockchain.contract.ContractEvent(name=";
 
     // 编译时引用包黑名单
     public static final String PACKAGE_BLACKLIST = "BLACKLIST";