XXL-JOB介绍

一、介绍

1.1、什么是XXL-JOB

XXL-JOB是一个分布式任务调度平台，用于解决分布式系统中定时任务执行问题

1.2、架构图

二、部署

2.1、源码部署

2.1.1、下载源码

gitee下载地址
github下载地址

2.1.2、初始化数据库

2.1.3、修改数据库配置

2.1.4、将xxl-job-admin打包部署

2.1.5、访问

http://localhost:8080/xxl-job-admin
默认登录账号 “admin/123456”

2.2、docker部署

docker run -d -e PARAMS="--spring.datasource.url=jdbc:mysql://127.0.0.1:3306/xxl_job?useUnicode=true&characterEncoding=UTF-8&autoReconnect=true --spring.datasource.username=root --spring.datasource.password=123456 --spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver" -p 8080:8080 --name xxl-job-admin xuxueli/xxl-job-admin:2.3.1

三、使用

3.1、引入依赖

<dependency><groupId>com.xuxueli</groupId><artifactId>xxl-job-core</artifactId><version>2.3.1</version>
</dependency>

3.2、代码编写

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 processProcessBuilder 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 logString line;while ((line = bufferedReader.readLine()) != null) {XxlJobHelper.log(line);}// command exitprocess.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 parseString 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 validif (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");// requestHttpURLConnection connection = null;BufferedReader bufferedReader = null;try {// connectionURL realUrl = new URL(url);connection = (HttpURLConnection) realUrl.openConnection();// connection settingconnection.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 connectionconnection.connect();// dataif (isPostMethod && data!=null && data.trim().length()>0) {DataOutputStream dataOutputStream = new DataOutputStream(connection.getOutputStream());dataOutputStream.write(data.getBytes("UTF-8"));dataOutputStream.flush();dataOutputStream.close();}// valid StatusCodeint statusCode = connection.getResponseCode();if (statusCode != 200) {throw new RuntimeException("Http Request StatusCode(" + statusCode + ") Invalid.");}// resultbufferedReader = 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("destroy");}}

除了可以通过@XxlJob注解的方式注册执行器，也可以通过继承IJobHandle类重写execute的方式来编写

3.3、执行定时任务

三、XXL-JOB-ADMIN配置详解

官方xxl-job-admin配置详解地址

四、XXL-JOB-ADMIN页面使用

4.1新增执行器

4.2、新增任务

官方任务配置详解

五、执行器配置详解

官方执行器配置详解地址

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