diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
index 74d2a820e..75b4e642f 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/entity/flow/Chain.java
@@ -8,20 +8,23 @@
  */
 package com.yomahub.liteflow.entity.flow;
 
+import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.util.ObjectUtil;
 import com.yomahub.liteflow.entity.data.DataBus;
 import com.yomahub.liteflow.entity.data.Slot;
 import com.yomahub.liteflow.enums.ExecuteTypeEnum;
+import com.yomahub.liteflow.exception.ConfigErrorException;
 import com.yomahub.liteflow.exception.FlowSystemException;
+import com.yomahub.liteflow.exception.WhenExecuteException;
 import com.yomahub.liteflow.property.LiteflowConfig;
+import com.yomahub.liteflow.util.ExecutorHelper;
 import com.yomahub.liteflow.util.SpringAware;
-import org.apache.commons.collections4.CollectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
+import java.util.concurrent.*;
 
 /**
  * chain对象，实现可执行器
diff --git a/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java b/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
index 9ef59c8fa..45c5678d5 100644
--- a/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
+++ b/liteflow-core/src/main/java/com/yomahub/liteflow/parser/XmlFlowParser.java
@@ -12,7 +12,7 @@ import com.yomahub.liteflow.entity.flow.*;
 import com.yomahub.liteflow.exception.ExecutableItemNotFoundException;
 import com.yomahub.liteflow.exception.ParseException;
 import com.yomahub.liteflow.util.SpringAware;
-import org.apache.commons.lang3.StringUtils;
+import org.dom4j.Attribute;
 import org.dom4j.Document;
 import org.dom4j.DocumentHelper;
 import org.dom4j.Element;
diff --git a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
index 8662dc075..0877f73d3 100644
--- a/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
+++ b/liteflow-spring-boot-starter/src/main/java/com/yomahub/liteflow/springboot/LiteflowMainAutoConfiguration.java
@@ -1,25 +1,15 @@
 package com.yomahub.liteflow.springboot;
 
 import cn.hutool.core.util.StrUtil;
-import com.google.common.collect.Lists;
 import com.yomahub.liteflow.core.FlowExecutor;
-import com.yomahub.liteflow.entity.data.DataBus;
 import com.yomahub.liteflow.monitor.MonitorBus;
 import com.yomahub.liteflow.property.LiteflowConfig;
-import com.yomahub.liteflow.spring.ComponentScaner;
 import com.yomahub.liteflow.util.SpringAware;
-import org.apache.commons.lang3.StringUtils;
 import org.springframework.boot.autoconfigure.AutoConfigureAfter;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
-import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
-import org.springframework.context.annotation.PropertySource;
-
-import javax.swing.*;
-import java.util.List;
 
 /**
  * 主要的业务装配器
diff --git a/liteflow-test-springboot/src/main/java/com/yomahub/flowtest/TestFlow.java b/liteflow-test-springboot/src/main/java/com/yomahub/flowtest/TestFlow.java
index 1e32a2726..ba6286bf4 100644
--- a/liteflow-test-springboot/src/main/java/com/yomahub/flowtest/TestFlow.java
+++ b/liteflow-test-springboot/src/main/java/com/yomahub/flowtest/TestFlow.java
@@ -17,7 +17,7 @@ public class TestFlow implements CommandLineRunner {
 
     @Override
     public void run(String... args) throws Exception {
-        Slot slot = flowExecutor.execute("chain1", "it's a request");
+        Slot slot = flowExecutor.execute("chain2", "it's a request");
         System.out.println(slot);
     }
 }