diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java b/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
index 5acda6a36..6966bef5a 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/core/FlowExecutor.java
@@ -8,7 +8,6 @@
  */
 package com.yomahub.liteflow.core;
 
-import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.collection.ListUtil;
 import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.ReUtil;
@@ -31,8 +30,6 @@ import com.yomahub.liteflow.flow.FlowBus;
 import com.yomahub.liteflow.parser.LocalXmlFlowParser;
 import com.yomahub.liteflow.parser.XmlFlowParser;
 import com.yomahub.liteflow.parser.ZookeeperXmlFlowParser;
-
-import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
@@ -263,30 +260,14 @@ public class FlowExecutor {
         init();
     }
 
-    /**
-     * callback by implicit subflow
-     *
-     * @param chainId
-     * @param param
-     * @param slotClazz
-     * @param slotIndex
-     * @param <T>
-     * @throws Exception
-     */
+    //隐式流程的调用方法
     public <T extends Slot> void invoke(String chainId, Object param, Class<T> slotClazz,
                                         Integer slotIndex) throws Exception {
         this.execute(chainId, param, slotClazz, slotIndex, true);
     }
 
-    /**
-     * 无参执行器
-     * @Author LeoLee
-     * @Date 17:52 2021/12/10
-     * @param chainId 业务链id
-     * @return com.yomahub.liteflow.entity.data.DefaultSlot
-     */
     public DefaultSlot execute(String chainId) throws Exception {
-        return this.execute(chainId, DefaultSlot.class, null, false);
+        return this.execute(chainId, null, DefaultSlot.class, null, false);
     }
 
     public DefaultSlot execute(String chainId, Object param) throws Exception {
@@ -297,39 +278,8 @@ public class FlowExecutor {
         return this.execute(chainId, param, slotClazz, null, false);
     }
 
-    /**
-     * 有param的execute方法，将会对param进行判断，若为null，抛出逻辑异常NullParamException
-     * @Author: LeoLee
-     * @Date: 2021/12/11 15:34
-     */
     public <T extends Slot> T execute(String chainId, Object param, Class<T> slotClazz,
                                       Integer slotIndex, boolean isInnerChain) throws Exception {
-        if (ObjectUtil.isNull(param)) {
-            //data slot is a ConcurrentHashMap, so null value will trigger NullPointerException
-            throw new NullParamException("data slot can't accept null param");
-        }
-        return this.execute0(chainId, param, slotClazz, slotIndex, isInnerChain);
-    }
-
-    /**
-     * 无param的execute方法，没有param参数
-     * 调用execute0时，param默认给null，之后会在doExecute方法中进行判断，如果param为null，则不进行slot数据槽设置
-     * @Author: LeoLee
-     * @Date: 2021/12/11 15:35
-     */
-    public <T extends Slot> T execute(String chainId, Class<T> slotClazz,
-                                      Integer slotIndex, boolean isInnerChain) throws Exception {
-        //默认param为null，在doExecute中会被过滤
-        return this.execute0(chainId, null, slotClazz, slotIndex, isInnerChain);
-    }
-
-    /**
-     * doExecute私有封装
-     * 为了区别无param和有param的执行方法
-     * @Author LeoLee
-     * @Date 17:53 2021/12/10
-     */
-    private <T extends Slot> T execute0(String chainId, Object param, Class<T> slotClazz, Integer slotIndex, boolean isInnerChain) throws Exception {
         T slot = this.doExecute(chainId, param, slotClazz, slotIndex, isInnerChain);
         if (ObjectUtil.isNotNull(slot.getException())) {
             throw slot.getException();
@@ -338,15 +288,8 @@ public class FlowExecutor {
         }
     }
 
-    /**
-     * 无param执行器
-     * @Param: [chainId] 业务链id
-     * @Return: com.yomahub.liteflow.entity.data.LiteflowResponse<com.yomahub.liteflow.entity.data.DefaultSlot>
-     * @Author: LeoLee
-     * @Date: 2021/12/11 15:54
-     */
     public LiteflowResponse<DefaultSlot> execute2Resp(String chainId) {
-        return this.execute2Resp(chainId, DefaultSlot.class, null, false);
+        return this.execute2Resp(chainId, null, DefaultSlot.class);
     }
 
     public LiteflowResponse<DefaultSlot> execute2Resp(String chainId, Object param) {
@@ -359,39 +302,8 @@ public class FlowExecutor {
 
     private final ArrayList<Class<? extends Exception>> notFailExceptionList = ListUtil.toList(ChainEndException.class);
 
-    /**
-     * 带param参数的execute2Resp方法，会对param进行判断
-     * 如果param为null，则抛出NullParamException
-     * @Author: LeoLee
-     * @Date: 2021/12/11 15:55
-     */
     public <T extends Slot> LiteflowResponse<T> execute2Resp(String chainId, Object param, Class<T> slotClazz, Integer slotIndex,
                                                              boolean isInnerChain) {
-        if (ObjectUtil.isNull(param)) {
-            //data slot is a ConcurrentHashMap, so null value will trigger NullPointerException
-            throw new NullParamException("data slot can't accept null param");
-        }
-        return execute2Resp0(chainId, param, slotClazz, slotIndex, isInnerChain);
-    }
-
-    /**
-     * 无param参数的execute2Resp方法
-     * 调用doExecute方法时，param默认传递null，会在doExecute房中进行
-     * @Author: LeoLee
-     * @Date: 2021/12/11 16:10
-     */
-    public <T extends Slot> LiteflowResponse<T> execute2Resp(String chainId, Class<T> slotClazz, Integer slotIndex,
-                                                             boolean isInnerChain) {
-        //默认param为null，在doExecute中会被过滤
-        return execute2Resp0(chainId, null, slotClazz, slotIndex, isInnerChain);
-    }
-
-    /**
-     * doExecute私有封装
-     * @Author LeoLee
-     * @Date 17:54 2021/12/10
-     */
-    private <T extends Slot> LiteflowResponse<T> execute2Resp0(String chainId, Object param, Class<T> slotClazz, Integer slotIndex, boolean isInnerChain) {
         LiteflowResponse<T> response = new LiteflowResponse<>();
 
         T slot = doExecute(chainId, param, slotClazz, slotIndex, isInnerChain);
@@ -433,14 +345,12 @@ public class FlowExecutor {
         }
 
         if (!isInnerChain) {
-            //对param进行判空，如果为null，则不进行slot设置
-            if (ObjectUtil.isNotNull(param)) {
+            if (ObjectUtil.isNotNull(param)){
                 slot.setRequestData(param);
             }
             slot.setChainName(chainId);
         } else {
-            //对param进行判空，如果为null，则不进行slot设置
-            if (ObjectUtil.isNotNull(param)) {
+            if (ObjectUtil.isNotNull(param)){
                 slot.setChainReqData(chainId, param);
             }
         }
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/AbsSlot.java b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/AbsSlot.java
index f6f24706d..98e9328d4 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/AbsSlot.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/data/AbsSlot.java
@@ -7,6 +7,7 @@
  */
 package com.yomahub.liteflow.entity.data;
 
+import cn.hutool.core.util.IdUtil;
 import cn.hutool.core.util.ObjectUtil;
 import com.yomahub.liteflow.exception.NullParamException;
 import org.slf4j.Logger;
@@ -29,7 +30,7 @@ public abstract class AbsSlot implements Slot {
 
 	private static final String RESPONSE = "_response";
 
-	private static final String CHAINNAME = "_chain_name";
+	private static final String CHAIN_NAME = "_chain_name";
 
 	private static final String COND_NODE_PREFIX = "_cond_";
 
@@ -49,7 +50,7 @@ public abstract class AbsSlot implements Slot {
 
 	protected ConcurrentHashMap<String, Object> dataMap = new ConcurrentHashMap<String, Object>();
 
-	private <T> void dataMapPut(String key, T t) {
+	private <T> void putDataMap(String key, T t) {
 		if (ObjectUtil.isNull(t)) {
 			//data slot is a ConcurrentHashMap, so null value will trigger NullPointerException
 			throw new NullParamException("data slot can't accept null param");
@@ -66,11 +67,11 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setInput(String nodeId,T t){
-		dataMapPut(NODE_INPUT_PREFIX + nodeId, t);
+		putDataMap(NODE_INPUT_PREFIX + nodeId, t);
 	}
 
 	public <T> void setOutput(String nodeId,T t){
-		dataMapPut(NODE_OUTPUT_PREFIX + nodeId, t);
+		putDataMap(NODE_OUTPUT_PREFIX + nodeId, t);
 	}
 
 	public <T> T getRequestData(){
@@ -78,7 +79,7 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setRequestData(T t){
-		dataMapPut(REQUEST, t);
+		putDataMap(REQUEST, t);
 	}
 
 	public <T> T getResponseData(){
@@ -86,7 +87,7 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setResponseData(T t){
-		dataMapPut(RESPONSE, t);
+		putDataMap(RESPONSE, t);
 	}
 
 	public <T> T getChainReqData(String chainId) {
@@ -94,7 +95,7 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setChainReqData(String chainId, T t) {
-		dataMapPut(CHAIN_REQ_PREFIX + chainId, t);
+		putDataMap(CHAIN_REQ_PREFIX + chainId, t);
 	}
 
 	public boolean hasData(String key){
@@ -106,7 +107,7 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setData(String key, T t){
-		dataMapPut(key, t);
+		putDataMap(key, t);
 	}
 
 	public <T> void setPrivateDeliveryData(String nodeId, T t){
@@ -134,7 +135,7 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public <T> void setCondResult(String key, T t){
-		dataMapPut(COND_NODE_PREFIX + key, t);
+		putDataMap(COND_NODE_PREFIX + key, t);
 	}
 
 	public <T> T getCondResult(String key){
@@ -142,11 +143,11 @@ public abstract class AbsSlot implements Slot {
 	}
 
 	public void setChainName(String chainName) {
-		dataMapPut(CHAINNAME, chainName);
+		putDataMap(CHAIN_NAME, chainName);
 	}
 
 	public String getChainName() {
-		return (String)dataMap.get(CHAINNAME);
+		return (String)dataMap.get(CHAIN_NAME);
 	}
 
 	public void addStep(CmpStep step){
@@ -169,7 +170,7 @@ public abstract class AbsSlot implements Slot {
 
 	@Override
 	public void generateRequestId() {
-		dataMap.put(REQUEST_ID, new Long(System.nanoTime()).toString());
+		dataMap.put(REQUEST_ID, IdUtil.nanoId());
 	}
 
 	@Override
@@ -188,6 +189,6 @@ public abstract class AbsSlot implements Slot {
 
 	@Override
 	public void setException(Exception e) {
-		dataMapPut(EXCEPTION, e);
+		putDataMap(EXCEPTION, e);
 	}
 }
diff --git a/liteflow-testcase-springboot/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java b/liteflow-testcase-springboot/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
index 26bc2d2f8..efb52759f 100644
--- a/liteflow-testcase-springboot/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
+++ b/liteflow-testcase-springboot/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
@@ -1,6 +1,9 @@
 package com.yomahub.liteflow.test.nullParam;
 
 import com.yomahub.liteflow.core.FlowExecutor;
+import com.yomahub.liteflow.entity.data.DefaultSlot;
+import com.yomahub.liteflow.entity.data.LiteflowResponse;
+import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -13,9 +16,8 @@ import org.springframework.test.context.junit4.SpringRunner;
 /**
  * 单元测试:传递null param导致NPE的优化代码
  *
- * @Author LeoLee
- * @Date 2021/12/9 16:58
- * @Version 1.0
+ * @author LeoLee
+ * @since 2.6.6
  */
 @RunWith(SpringRunner.class)
 @TestPropertySource(value = "classpath:/nullParam/application.properties")
@@ -29,15 +31,11 @@ public class NullParamTest {
 
     /**
      * 支持无参的flow执行，以及param 为null时的异常抛出
-     * @Author LeoLee
-     * @Date 17:25 2021/12/9
      */
     @Test
     public void testNullParam() throws Exception {
-        //flowExecutor.execute("chain1", null);//NullParamException: data slot can't accept null param
-        flowExecutor.execute("chain1");
-        //flowExecutor.execute2Resp("chain1", null);//NullParamException: data slot can't accept null param
-        flowExecutor.execute2Resp("chain1");
+        LiteflowResponse<DefaultSlot> response = flowExecutor.execute2Resp("chain1");
+        Assert.assertTrue(response.isSuccess());
     }
 
 }
diff --git a/liteflow-testcase-springboot/src/test/resources/nullParam/application.properties b/liteflow-testcase-springboot/src/test/resources/nullParam/application.properties
index e98eccac3..7f320b595 100644
--- a/liteflow-testcase-springboot/src/test/resources/nullParam/application.properties
+++ b/liteflow-testcase-springboot/src/test/resources/nullParam/application.properties
@@ -1,2 +1 @@
 liteflow.rule-source=nullParam/flow.xml
-liteflow.print-banner=true
diff --git a/liteflow-testcase-springboot/src/test/resources/nullParam/flow.xml b/liteflow-testcase-springboot/src/test/resources/nullParam/flow.xml
index cd45c1a17..eb30c8e40 100644
--- a/liteflow-testcase-springboot/src/test/resources/nullParam/flow.xml
+++ b/liteflow-testcase-springboot/src/test/resources/nullParam/flow.xml
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <flow>
     <chain name="chain1">
-        <!--同步执行-->
         <then value="a,b"/>
         <when value="c"/>
     </chain>
diff --git a/liteflow-testcase-springnative/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java b/liteflow-testcase-springnative/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
index 709544449..491d1a23d 100644
--- a/liteflow-testcase-springnative/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
+++ b/liteflow-testcase-springnative/src/test/java/com/yomahub/liteflow/test/nullParam/NullParamTest.java
@@ -1,7 +1,10 @@
 package com.yomahub.liteflow.test.nullParam;
 
 import com.yomahub.liteflow.core.FlowExecutor;
+import com.yomahub.liteflow.entity.data.DefaultSlot;
+import com.yomahub.liteflow.entity.data.LiteflowResponse;
 import com.yomahub.liteflow.test.BaseTest;
+import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.springframework.test.context.ContextConfiguration;
@@ -11,10 +14,8 @@ import javax.annotation.Resource;
 
 /**
  * 单元测试:传递null param导致NPE的优化代码
- *
- * @Author LeoLee
- * @Date 2021/12/11
- * @Version V1.0
+ * @author LeoLee
+ * @since 2.6.6
  **/
 @RunWith(SpringRunner.class)
 @ContextConfiguration("classpath:/nullParam/application-local.xml")
@@ -25,14 +26,10 @@ public class NullParamTest extends BaseTest {
 
     /**
      * 支持无参的flow执行，以及param 为null时的异常抛出
-     * @Author: LeoLee
-     * @Date: 2021/12/11 21:38
      */
     @Test
     public void testNullParam() throws Exception {
-        //flowExecutor.execute("chain1", null);//NullParamException: data slot can't accept null param
-        flowExecutor.execute("chain1");
-        //flowExecutor.execute2Resp("chain1", null);//NullParamException: data slot can't accept null param
-        flowExecutor.execute2Resp("chain1");
+        LiteflowResponse<DefaultSlot> response = flowExecutor.execute2Resp("chain1");
+        Assert.assertTrue(response.isSuccess());
     }
 }