diff --git a/doc/XXL-JOB官方文档.md b/doc/XXL-JOB官方文档.md
index 967ddb49..8750bbb8 100644
--- a/doc/XXL-JOB官方文档.md
+++ b/doc/XXL-JOB官方文档.md
@@ -559,7 +559,6 @@ XXL-JOB是一个分布式任务调度平台，其核心设计目标是开发迅
     xxl-job-core：公共依赖
     xxl-job-executor-samples：执行器Sample示例（选择合适的版本执行器，可直接使用，也可以参考其并将现有项目改造成执行器）
         ：xxl-job-executor-sample-springboot：Springboot版本，通过Springboot管理执行器，推荐这种方式；
-        ：xxl-job-executor-sample-spring：Spring版本，通过Spring容器管理执行器，比较通用；
         ：xxl-job-executor-sample-frameless：无框架版本；
         
 
@@ -714,7 +713,7 @@ public XxlJobSpringExecutor xxlJobExecutor() {
 如果已经正确进行上述配置，可将执行器项目编译打部署，系统提供多种执行器Sample示例项目，选择其中一个即可，各自的部署方式如下。
 
     xxl-job-executor-sample-springboot：项目编译打包成springboot类型的可执行JAR包，命令启动即可；
-    xxl-job-executor-sample-spring：项目编译打包成WAR包，并部署到tomcat中。
+    xxl-job-executor-sample-frameless：项目编译打包成JAR包，命令启动即可；
     
 
 至此“执行器”项目已经部署结束。
diff --git a/pom.xml b/pom.xml
index f34feff6..a072628b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -24,7 +24,7 @@
 		<maven.compiler.target>1.8</maven.compiler.target>
 		<maven.test.skip>true</maven.test.skip>
 
-		<netty-all.version>4.1.53.Final</netty-all.version>
+		<netty-all.version>4.1.54.Final</netty-all.version>
 		<gson.version>2.8.6</gson.version>
 
 		<spring.version>5.2.9.RELEASE</spring.version>
diff --git a/xxl-job-executor-samples/pom.xml b/xxl-job-executor-samples/pom.xml
index d7e1810c..8f7cdb3f 100644
--- a/xxl-job-executor-samples/pom.xml
+++ b/xxl-job-executor-samples/pom.xml
@@ -13,7 +13,6 @@
     <modules>
         <module>xxl-job-executor-sample-frameless</module>
         <module>xxl-job-executor-sample-springboot</module>
-        <module>xxl-job-executor-sample-spring</module>
     </modules>
 
 </project>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/pom.xml b/xxl-job-executor-samples/xxl-job-executor-sample-spring/pom.xml
deleted file mode 100644
index 6ea54ecc..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/pom.xml
+++ /dev/null
@@ -1,59 +0,0 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
-	<modelVersion>4.0.0</modelVersion>
-	<parent>
-		<groupId>com.xuxueli</groupId>
-		<artifactId>xxl-job-executor-samples</artifactId>
-		<version>2.3.0-SNAPSHOT</version>
-	</parent>
-	<artifactId>xxl-job-executor-sample-spring</artifactId>
-	<packaging>war</packaging>
-
-	<name>${project.artifactId}</name>
-	<description>Executor project for spring boot.</description>
-	<url>https://www.xuxueli.com/</url>
-
-	<dependencies>
-		<!-- spring-webmvc -->
-		<dependency>
-			<groupId>org.springframework</groupId>
-			<artifactId>spring-webmvc</artifactId>
-			<version>${spring.version}</version>
-		</dependency>
-
-
-		<!-- Logback -->
-		<dependency>
-			<groupId>org.logback-extensions</groupId>
-			<artifactId>logback-ext-spring</artifactId>
-			<version>0.1.4</version>
-		</dependency>
-		<dependency>
-			<groupId>org.slf4j</groupId>
-			<artifactId>jcl-over-slf4j</artifactId>
-			<version>1.7.25</version>
-		</dependency>
-
-		
-		<!-- xxl-job-core -->
-		<dependency>
-			<groupId>com.xuxueli</groupId>
-			<artifactId>xxl-job-core</artifactId>
-			<version>${project.parent.version}</version>
-		</dependency>
-	</dependencies>
-
-	<build>
-		<plugins>
-			<plugin>
-				<groupId>org.apache.maven.plugins</groupId>
-				<artifactId>maven-war-plugin</artifactId>
-				<version>${maven-war-plugin.version}</version>
-				<configuration>
-					<archiveClasses>false</archiveClasses>
-				</configuration>
-			</plugin>
-		</plugins>
-	</build>
-
-</project>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
deleted file mode 100644
index 7ea8e52d..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/java/com/xxl/job/executor/service/jobhandler/SampleXxlJob.java
+++ /dev/null
@@ -1,253 +0,0 @@
-package com.xxl.job.executor.service.jobhandler;
-
-import com.xxl.job.core.context.XxlJobHelper;
-import com.xxl.job.core.handler.annotation.XxlJob;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.stereotype.Component;
-
-import java.io.BufferedInputStream;
-import java.io.BufferedReader;
-import java.io.DataOutputStream;
-import java.io.InputStreamReader;
-import java.net.HttpURLConnection;
-import java.net.URL;
-import java.util.Arrays;
-import java.util.concurrent.TimeUnit;
-
-/**
- * XxlJob开发示例（Bean模式）
- *
- * 开发步骤：
- *      1、任务开发：在Spring Bean实例中，开发Job方法；
- *      2、注解配置：为Job方法添加注解 "@XxlJob(value="自定义jobhandler名称", init = "JobHandler初始化方法", destroy = "JobHandler销毁方法")"，注解value值对应的是调度中心新建任务的JobHandler属性的值。
- *      3、执行日志：需要通过 "XxlJobHelper.log" 打印执行日志；
- *      4、任务结果：默认任务结果为 "成功" 状态，不需要主动设置；如有诉求，比如设置任务结果为失败，可以通过 "XxlJobHelper.handleFail/handleSuccess" 自主设置任务结果；
- *
- * @author xuxueli 2019-12-11 21:52:51
- */
-@Component
-public class SampleXxlJob {
-    private static Logger logger = LoggerFactory.getLogger(SampleXxlJob.class);
-
-
-    /**
-     * 1、简单任务示例（Bean模式）
-     */
-    @XxlJob("demoJobHandler")
-    public void demoJobHandler() throws Exception {
-        XxlJobHelper.log("XXL-JOB, Hello World.");
-
-        for (int i = 0; i < 5; i++) {
-            XxlJobHelper.log("beat at:" + i);
-            TimeUnit.SECONDS.sleep(2);
-        }
-        // default success
-    }
-
-
-    /**
-     * 2、分片广播任务
-     */
-    @XxlJob("shardingJobHandler")
-    public void shardingJobHandler() throws Exception {
-
-        // 分片参数
-        int shardIndex = XxlJobHelper.getShardIndex();
-        int shardTotal = XxlJobHelper.getShardTotal();
-
-        XxlJobHelper.log("分片参数：当前分片序号 = {}, 总分片数 = {}", shardIndex, shardTotal);
-
-        // 业务逻辑
-        for (int i = 0; i < shardTotal; i++) {
-            if (i == shardIndex) {
-                XxlJobHelper.log("第 {} 片, 命中分片开始处理", i);
-            } else {
-                XxlJobHelper.log("第 {} 片, 忽略", i);
-            }
-        }
-
-    }
-
-
-    /**
-     * 3、命令行任务
-     */
-    @XxlJob("commandJobHandler")
-    public void commandJobHandler() throws Exception {
-        String command = XxlJobHelper.getJobParam();
-        int exitValue = -1;
-
-        BufferedReader bufferedReader = null;
-        try {
-            // command process
-            ProcessBuilder processBuilder = new ProcessBuilder();
-            processBuilder.command(command);
-            processBuilder.redirectErrorStream(true);
-
-            Process process = processBuilder.start();
-            //Process process = Runtime.getRuntime().exec(command);
-
-            BufferedInputStream bufferedInputStream = new BufferedInputStream(process.getInputStream());
-            bufferedReader = new BufferedReader(new InputStreamReader(bufferedInputStream));
-
-            // command log
-            String line;
-            while ((line = bufferedReader.readLine()) != null) {
-                XxlJobHelper.log(line);
-            }
-
-            // command exit
-            process.waitFor();
-            exitValue = process.exitValue();
-        } catch (Exception e) {
-            XxlJobHelper.log(e);
-        } finally {
-            if (bufferedReader != null) {
-                bufferedReader.close();
-            }
-        }
-
-        if (exitValue == 0) {
-            // default success
-        } else {
-            XxlJobHelper.handleFail("command exit value("+exitValue+") is failed");
-        }
-
-    }
-
-
-    /**
-     * 4、跨平台Http任务
-     *  参数示例：
-     *      "url: http://www.baidu.com\n" +
-     *      "method: get\n" +
-     *      "data: content\n";
-     */
-    @XxlJob("httpJobHandler")
-    public void httpJobHandler() throws Exception {
-
-        // param parse
-        String param = XxlJobHelper.getJobParam();
-        if (param==null || param.trim().length()==0) {
-            XxlJobHelper.log("param["+ param +"] invalid.");
-
-            XxlJobHelper.handleFail();
-            return;
-        }
-
-        String[] httpParams = param.split("\n");
-        String url = null;
-        String method = null;
-        String data = null;
-        for (String httpParam: httpParams) {
-            if (httpParam.startsWith("url:")) {
-                url = httpParam.substring(httpParam.indexOf("url:") + 4).trim();
-            }
-            if (httpParam.startsWith("method:")) {
-                method = httpParam.substring(httpParam.indexOf("method:") + 7).trim().toUpperCase();
-            }
-            if (httpParam.startsWith("data:")) {
-                data = httpParam.substring(httpParam.indexOf("data:") + 5).trim();
-            }
-        }
-
-        // param valid
-        if (url==null || url.trim().length()==0) {
-            XxlJobHelper.log("url["+ url +"] invalid.");
-
-            XxlJobHelper.handleFail();
-            return;
-        }
-        if (method==null || !Arrays.asList("GET", "POST").contains(method)) {
-            XxlJobHelper.log("method["+ method +"] invalid.");
-
-            XxlJobHelper.handleFail();
-            return;
-        }
-        boolean isPostMethod = method.equals("POST");
-
-        // request
-        HttpURLConnection connection = null;
-        BufferedReader bufferedReader = null;
-        try {
-            // connection
-            URL realUrl = new URL(url);
-            connection = (HttpURLConnection) realUrl.openConnection();
-
-            // connection setting
-            connection.setRequestMethod(method);
-            connection.setDoOutput(isPostMethod);
-            connection.setDoInput(true);
-            connection.setUseCaches(false);
-            connection.setReadTimeout(5 * 1000);
-            connection.setConnectTimeout(3 * 1000);
-            connection.setRequestProperty("connection", "Keep-Alive");
-            connection.setRequestProperty("Content-Type", "application/json;charset=UTF-8");
-            connection.setRequestProperty("Accept-Charset", "application/json;charset=UTF-8");
-
-            // do connection
-            connection.connect();
-
-            // data
-            if (isPostMethod && data!=null && data.trim().length()>0) {
-                DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());
-                dataOutputStream.write(data.getBytes("UTF-8"));
-                dataOutputStream.flush();
-                dataOutputStream.close();
-            }
-
-            // valid StatusCode
-            int statusCode = connection.getResponseCode();
-            if (statusCode != 200) {
-                throw new RuntimeException("Http Request StatusCode(" + statusCode + ") Invalid.");
-            }
-
-            // result
-            bufferedReader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
-            StringBuilder result = new StringBuilder();
-            String line;
-            while ((line = bufferedReader.readLine()) != null) {
-                result.append(line);
-            }
-            String responseMsg = result.toString();
-
-            XxlJobHelper.log(responseMsg);
-
-            return;
-        } catch (Exception e) {
-            XxlJobHelper.log(e);
-
-            XxlJobHelper.handleFail();
-            return;
-        } finally {
-            try {
-                if (bufferedReader != null) {
-                    bufferedReader.close();
-                }
-                if (connection != null) {
-                    connection.disconnect();
-                }
-            } catch (Exception e2) {
-                XxlJobHelper.log(e2);
-            }
-        }
-
-    }
-
-    /**
-     * 5、生命周期任务示例：任务初始化与销毁时，支持自定义相关逻辑；
-     */
-    @XxlJob(value = "demoJobHandler2", init = "init", destroy = "destroy")
-    public void demoJobHandler2() throws Exception {
-        XxlJobHelper.log("XXL-JOB, Hello World.");
-    }
-    public void init(){
-        logger.info("init");
-    }
-    public void destroy(){
-        logger.info("destory");
-    }
-
-
-}
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/applicationcontext-xxl-job.xml b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/applicationcontext-xxl-job.xml
deleted file mode 100644
index 1ff9421d..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/applicationcontext-xxl-job.xml
+++ /dev/null
@@ -1,44 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<beans xmlns="http://www.springframework.org/schema/beans"
-       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-       xmlns:context="http://www.springframework.org/schema/context"
-       xsi:schemaLocation="http://www.springframework.org/schema/beans
-           http://www.springframework.org/schema/beans/spring-beans.xsd
-           http://www.springframework.org/schema/context
-           http://www.springframework.org/schema/context/spring-context.xsd">
-
-	<bean id="propertyConfigurer" class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
-		<property name="fileEncoding" value="utf-8" />
-		<property name="locations">
-			<list>
-				<value>classpath*:xxl-job-executor.properties</value>
-			</list>
-		</property>
-	</bean>
-
-    <!-- ********************************* 基础配置 ********************************* -->
-
-	<!-- 配置01、JobHandler 扫描路径 -->
-	<context:component-scan base-package="com.xxl.job.executor.service.jobhandler" />
-
-	<!-- 配置02、执行器 -->
-	<bean id="xxlJobSpringExecutor" class="com.xxl.job.core.executor.impl.XxlJobSpringExecutor" >
-		<!-- 执行器注册中心地址[选填]，为空则关闭自动注册 -->
-		<property name="adminAddresses" value="${xxl.job.admin.addresses}" />
-		<!-- 访问令牌[选填]，非空则进行匹配校验 -->
-		<property name="accessToken" value="${xxl.job.accessToken}" />
-		<!-- 执行器AppName[选填]，为空则关闭自动注册 -->
-		<property name="appname" value="${xxl.job.executor.appname}" />
-		<!-- 注册地址[选填]，优先使用该配置作为注册地址，为空时使用内嵌服务 ”IP:PORT“ 作为注册地址 -->
-		<property name="address" value="${xxl.job.executor.address}" />
-		<!-- 执行器IP[选填]，为空则自动获取 -->
-		<property name="ip" value="${xxl.job.executor.ip}" />
-		<!-- 执行器端口号[选填]，小于等于0则自动获取 -->
-		<property name="port" value="${xxl.job.executor.port}" />
-		<!-- 执行器日志路径[选填]，为空则使用默认路径 -->
-		<property name="logPath" value="${xxl.job.executor.logpath}" />
-		<!-- 日志保存天数[选填]，值大于3时生效 -->
-		<property name="logRetentionDays" value="${xxl.job.executor.logretentiondays}" />
-	</bean>
-
-</beans>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/log4j.xml b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/log4j.xml
deleted file mode 100644
index f0a7fc65..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/log4j.xml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">
-<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/" threshold="null" debug="null">
-
-	<appender name="CONSOLE" class="org.apache.log4j.ConsoleAppender">
-		<param name="Target" value="System.out" />
-		<layout class="org.apache.log4j.PatternLayout">
-            <param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss} xxl-job-executor-sample-spring [%c]-[%t]-[%M]-[%L]-[%p] %m%n"/>
-		</layout>
-	</appender>
-	
-    <appender name="FILE" class="org.apache.log4j.DailyRollingFileAppender">
-        <param name="file" value="/data/applogs/xxl-job/xxl-job-executor-sample-spring.log"/>
-        <param name="append" value="true"/>
-        <param name="encoding" value="UTF-8"/>
-        <layout class="org.apache.log4j.PatternLayout">
-            <param name="ConversionPattern" value="%-d{yyyy-MM-dd HH:mm:ss} xxl-job-executor-sample-spring [%c]-[%t]-[%M]-[%L]-[%p] %m%n"/>
-        </layout>
-    </appender>
-
-    <root>
-        <level value="INFO" />
-        <appender-ref ref="CONSOLE" />
-        <appender-ref ref="FILE" />
-    </root>
-
-    <!--<logger name="com.xxl.job.executor.service.jobhandler" additivity="false">
-        <level value="INFO" />
-        <appender-ref ref="CONSOLE" />
-        <appender-ref ref="FILE" />
-    </logger>-->
-
-</log4j:configuration>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/logback.xml b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/logback.xml
deleted file mode 100644
index d5a0d2ca..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/logback.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration debug="false" scan="true" scanPeriod="1 seconds">
-
-    <contextName>logback</contextName>
-    <property name="log.path" value="/data/applogs/xxl-job/xxl-job-executor-sample-springboot.log"/>
-
-    <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
-            <pattern>%d{HH:mm:ss.SSS} %contextName [%thread] %-5level %logger{36} - %msg%n</pattern>
-        </encoder>
-    </appender>
-
-    <appender name="file" class="ch.qos.logback.core.rolling.RollingFileAppender">
-        <file>${log.path}</file>
-        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
-            <fileNamePattern>${log.path}.%d{yyyy-MM-dd}.zip</fileNamePattern>
-        </rollingPolicy>
-        <encoder>
-            <pattern>%date %level [%thread] %logger{36} [%file : %line] %msg%n
-            </pattern>
-        </encoder>
-    </appender>
-
-    <root level="info">
-        <appender-ref ref="console"/>
-        <appender-ref ref="file"/>
-    </root>
-
-</configuration>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/xxl-job-executor.properties b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/xxl-job-executor.properties
deleted file mode 100644
index ea7589af..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/resources/xxl-job-executor.properties
+++ /dev/null
@@ -1,17 +0,0 @@
-### xxl-job admin address list, such as "http://address" or "http://address01,http://address02"
-xxl.job.admin.addresses=http://127.0.0.1:8080/xxl-job-admin
-
-### xxl-job, access token
-xxl.job.accessToken=
-
-### xxl-job executor appname
-xxl.job.executor.appname=xxl-job-executor-sample
-### xxl-job executor registry-address: default use address to registry , otherwise use ip:port if address is null
-xxl.job.executor.address=
-### xxl-job executor server-info
-xxl.job.executor.ip=
-xxl.job.executor.port=9999
-### xxl-job executor log-path
-xxl.job.executor.logpath=/data/applogs/xxl-job/jobhandler
-### xxl-job executor log-retention-days
-xxl.job.executor.logretentiondays=30
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/WEB-INF/web.xml b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/WEB-INF/web.xml
deleted file mode 100644
index c32feb32..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/WEB-INF/web.xml
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"
-	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
-	id="WebApp_ID" version="2.5">
-
-	<display-name>xxl-job-executor-sample-spring</display-name>
-	<context-param>
-	    <param-name>webAppRootKey</param-name>
-	    <param-value>xxl-job-executor-sample-spring</param-value>
-	</context-param>
-
-	<!-- spring -->
-	<context-param>
-		<param-name>contextConfigLocation</param-name>
-		<param-value>classpath*:applicationcontext-*.xml</param-value>
-	</context-param>
-
-	<!-- logback -->
-	<context-param>
-		<param-name>logbackConfigLocation</param-name>
-		<param-value>classpath:logback.xml</param-value>
-	</context-param>
-
-	<listener>
-		<listener-class>ch.qos.logback.ext.spring.web.LogbackConfigListener</listener-class>
-	</listener>
-
-	<listener>
-		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
-	</listener>
-
-	<welcome-file-list>
-		<welcome-file>index.html</welcome-file>
-	</welcome-file-list>
-	
-</web-app>
\ No newline at end of file
diff --git a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/index.html b/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/index.html
deleted file mode 100644
index 7085239b..00000000
--- a/xxl-job-executor-samples/xxl-job-executor-sample-spring/src/main/webapp/index.html
+++ /dev/null
@@ -1 +0,0 @@
-i am alive.
\ No newline at end of file