Springboot项目整合xxl -job

转自：https://www.icode9.com/content-4-632031.html

XXL-JOB是一个轻量级分布式任务调度平台，其核心设计目标是开发迅速、学习简单、轻量级、易扩展。现已开放源代码并接入多家公司线上产品线，开箱即用。

首先下载github源码：https://github.com/xuxueli/xxl-job

本文以2.2.0-SNAPSHOT开发测，如果需要下载对应版本：https://github.com/itwsj/xxl-job

代码目录结构：

将doc目录下的db文件夹中的数据库脚本在mysql数据库中执行，生成xxl相应的一些基础表。

修改xxl-job-admin下的application.properties文件，将数据库链接改成自己的数据库对应的url，最重要的是要指定服务端口以及上下文的名称。

然后配置mysql链接和对应驱动，圈住的地方需要加上，要不然会报错时间区域和驱动链接错误

serverTimezone=UTC，com.mysql.cj.jdbc.Driver

然后启动项目，也可以将项目打包成jar文件。

访问后台管理页面

输入地址：localhost：8080/job 用户名：admin 密码 123456

在自己的springboot项目中，集成xxl-job：
在配置文件中加入以下配置：

(1)在pom.xml引入xxl-job的依赖

 <!-- xxl-job-core -->
   <dependency>
        <groupId>com.xuxueli</groupId>
        <artifactId>xxl-job-core</artifactId>
        <version>2.2.0-SNAPSHOT</version>
   </dependency>

（2）在application.yml/application.properties中配置相关信息

1、配置后台管理端地址
2、appname值非常重要，配置执行器需要和这个保持一直

# web port
server.port=8081

# log config
logging.config=classpath:logback.xml


### xxl-job admin address list, such as "http://address" or "http://address01,http://address02"
xxl.job.admin.addresses=http://127.0.0.1:8080/job

### xxl-job executor address
xxl.job.executor.appname=myapp
xxl.job.executor.ip=
xxl.job.executor.port=9999

### xxl-job, access token
xxl.job.accessToken=

### xxl-job log path
xxl.job.executor.logpath=/data/applogs/xxl-job/jobhandler
### xxl-job log retention days
xxl.job.executor.logretentiondays=30

编写配置类：

package com.xxl.job.executor.core.config;

import com.xxl.job.core.executor.impl.XxlJobSpringExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * xxl-job config
 */
@Configuration
public class XxlJobConfig {
    private Logger logger = LoggerFactory.getLogger(XxlJobConfig.class);

    @Value("${xxl.job.admin.addresses}")
    private String adminAddresses;

    @Value("${xxl.job.executor.appname}")
    private String appName;

    @Value("${xxl.job.executor.ip}")
    private String ip;

    @Value("${xxl.job.executor.port}")
    private int port;

    @Value("${xxl.job.accessToken}")
    private String accessToken;

    @Value("${xxl.job.executor.logpath}")
    private String logPath;

    @Value("${xxl.job.executor.logretentiondays}")
    private int logRetentionDays;


    @Bean
    public XxlJobSpringExecutor xxlJobExecutor() {
        logger.info(">>>>>>>>>>> xxl-job config init.");
        XxlJobSpringExecutor xxlJobSpringExecutor = new XxlJobSpringExecutor();
        xxlJobSpringExecutor.setAdminAddresses(adminAddresses);
        xxlJobSpringExecutor.setAppName(appName);
        xxlJobSpringExecutor.setIp(ip);
        xxlJobSpringExecutor.setPort(port);
        xxlJobSpringExecutor.setAccessToken(accessToken);
        xxlJobSpringExecutor.setLogPath(logPath);
        xxlJobSpringExecutor.setLogRetentionDays(logRetentionDays);

        return xxlJobSpringExecutor;
    }

    /**
     * 针对多网卡、容器内部署等情况，可借助 "spring-cloud-commons" 提供的 "InetUtils" 组件灵活定制注册IP；
     *
     *      1、引入依赖：
     *          <dependency>
     *             <groupId>org.springframework.cloud</groupId>
     *             <artifactId>spring-cloud-commons</artifactId>
     *             <version>${version}</version>
     *         </dependency>
     *
     *      2、配置文件，或者容器启动变量
     *          spring.cloud.inetutils.preferred-networks: 'xxx.xxx.xxx.'
     *
     *      3、获取IP
     *          String ip_ = inetUtils.findFirstNonLoopbackHostInfo().getIpAddress();
     */


}

编写自己的定时任务

package com.xxl.job.executor.service.jobhandler;

import com.xxl.job.core.biz.model.ReturnT;
import com.xxl.job.core.handler.IJobHandler;
import com.xxl.job.core.handler.annotation.XxlJob;
import com.xxl.job.core.log.XxlJobLogger;
import com.xxl.job.core.util.ShardingUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.concurrent.TimeUnit;

/**
 * XxlJob开发示例（Bean模式）
 *
 * 开发步骤：
 * 1、在Spring Bean实例中，开发Job方法，方式格式要求为 "public ReturnT<String> execute(String param)"
 * 2、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 "XxlJobLogger.log" 打印执行日志；
 *
 * @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 ReturnT<String> demoJobHandler(String param) throws Exception {
        XxlJobLogger.log("XXL-JOB, Hello World.");

        for (int i = 0; i < 5; i++) {
            XxlJobLogger.log("beat at:" + i);
            TimeUnit.SECONDS.sleep(2);
        }
        return ReturnT.SUCCESS;
    }


    /**
     * 2、分片广播任务
     */
    @XxlJob("shardingJobHandler")
    public ReturnT<String> shardingJobHandler(String param) throws Exception {

        // 分片参数
        ShardingUtil.ShardingVO shardingVO = ShardingUtil.getShardingVo();
        XxlJobLogger.log("分片参数：当前分片序号 = {}, 总分片数 = {}", shardingVO.getIndex(), shardingVO.getTotal());

        // 业务逻辑
        for (int i = 0; i < shardingVO.getTotal(); i++) {
            if (i == shardingVO.getIndex()) {
                XxlJobLogger.log("第 {} 片, 命中分片开始处理", i);
            } else {
                XxlJobLogger.log("第 {} 片, 忽略", i);
            }
        }

        return ReturnT.SUCCESS;
    }


    /**
     * 3、命令行任务
     */
    @XxlJob("commandJobHandler")
    public ReturnT<String> commandJobHandler(String param) throws Exception {
        String command = param;
        int exitValue = -1;

        BufferedReader bufferedReader = null;
        try {
            // command process
            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){XxlJobLogger.log(line);}// command exit
            process.waitFor();
            exitValue = process.exitValue();}catch(Exception e){XxlJobLogger.log(e);}finally{if(bufferedReader !=null){
                bufferedReader.close();}}if(exitValue ==0){returnIJobHandler.SUCCESS;}else{returnnewReturnT<String>(IJobHandler.FAIL.getCode(),"command exit value("+exitValue+") is failed");}}/**
     * 4、跨平台Http任务
     */@XxlJob("httpJobHandler")publicReturnT<String> httpJobHandler(String param)throwsException{// requestHttpURLConnection connection =null;BufferedReader bufferedReader =null;try{// connection
            URL realUrl =new URL(param);
            connection =(HttpURLConnection) realUrl.openConnection();// connection setting
            connection.setRequestMethod("GET");
            connection.setDoOutput(true);
            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();//Map<String, List<String>> map = connection.getHeaderFields();// valid StatusCodeint statusCode = connection.getResponseCode();if(statusCode !=200){thrownewRuntimeException("Http Request StatusCode("+ statusCode +") Invalid.");}// result
            bufferedReader =newBufferedReader(newInputStreamReader(connection.getInputStream(),"UTF-8"));StringBuilder result =newStringBuilder();String line;while((line = bufferedReader.readLine())!=null){
                result.append(line);}String responseMsg = result.toString();XxlJobLogger.log(responseMsg);returnReturnT.SUCCESS;}catch(Exception e){XxlJobLogger.log(e);returnReturnT.FAIL;}finally{try{if(bufferedReader !=null){
                    bufferedReader.close();}if(connection !=null){
                    connection.disconnect();}}catch(Exception e2){XxlJobLogger.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")publicReturnT<String> demoJobHandler2(String param)throwsException{XxlJobLogger.log("XXL-JOB, Hello World.");returnReturnT.SUCCESS;}publicvoid init(){
        logger.info("init");}publicvoid destroy(){
        logger.info("destory");}}