diff --git a/src/main/java/com/lq/code/executor/processor/InstantiationTracingBeanPostProcessor.java b/src/main/java/com/lq/code/executor/processor/InstantiationTracingBeanPostProcessor.java
index 1a8c684..611f7e2 100755
--- a/src/main/java/com/lq/code/executor/processor/InstantiationTracingBeanPostProcessor.java
+++ b/src/main/java/com/lq/code/executor/processor/InstantiationTracingBeanPostProcessor.java
@@ -41,7 +41,6 @@ public class InstantiationTracingBeanPostProcessor implements ApplicationListene
     @Override
     public void onApplicationEvent(ContextRefreshedEvent contextRefreshedEvent) {
         if(contextRefreshedEvent.getApplicationContext().getParent() == null){
-            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
             //root application context 没有parent，他就是老大.
             //需要执行的逻辑代码，当spring容器初始化完成后就会执行该方法。
             //扫描实体类