diff --git a/xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobInfoController.java b/xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobInfoController.java
index ea314b32..7a9092b9 100644
--- a/xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobInfoController.java
+++ b/xxl-job-admin/src/main/java/com/xxl/job/admin/controller/JobInfoController.java
@@ -1,6 +1,5 @@
 package com.xxl.job.admin.controller;
 
-import com.xxl.job.admin.core.cron.CronExpression;
 import com.xxl.job.admin.core.exception.XxlJobException;
 import com.xxl.job.admin.core.model.XxlJobGroup;
 import com.xxl.job.admin.core.model.XxlJobInfo;
@@ -29,7 +28,6 @@ import org.springframework.web.bind.annotation.ResponseBody;
 
 import javax.annotation.Resource;
 import javax.servlet.http.HttpServletRequest;
-import java.text.ParseException;
 import java.util.*;
 
 /**
diff --git a/xxl-job-core/src/main/java/com/xxl/job/core/executor/impl/XxlJobSimpleExecutor.java b/xxl-job-core/src/main/java/com/xxl/job/core/executor/impl/XxlJobSimpleExecutor.java
index d1b413a3..e8c38ea1 100644
--- a/xxl-job-core/src/main/java/com/xxl/job/core/executor/impl/XxlJobSimpleExecutor.java
+++ b/xxl-job-core/src/main/java/com/xxl/job/core/executor/impl/XxlJobSimpleExecutor.java
@@ -9,7 +9,6 @@ import org.slf4j.LoggerFactory;
 import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.Map;
 
 
 /**
diff --git a/xxl-job-core/src/main/java/com/xxl/job/core/util/XxlJobRemotingUtil.java b/xxl-job-core/src/main/java/com/xxl/job/core/util/XxlJobRemotingUtil.java
index 8d781c31..a8434702 100644
--- a/xxl-job-core/src/main/java/com/xxl/job/core/util/XxlJobRemotingUtil.java
+++ b/xxl-job-core/src/main/java/com/xxl/job/core/util/XxlJobRemotingUtil.java
@@ -12,7 +12,6 @@ import java.net.HttpURLConnection;
 import java.net.URL;
 import java.security.cert.CertificateException;
 import java.security.cert.X509Certificate;
-import java.util.Map;
 
 /**
  * @author xuxueli 2018-11-25 00:55:31