Quartz是一款开源的定时任务调度框架，Quartz的官网是：http://www.quartz-scheduler.org/。本文主要是讲诉使用springboot整合quartz实现定时任务调度管理的用例。主要的内容有如下三部分：
1. springboot整合quartz的相关配置
2. 实现基于simpleTrigger的定时任务
3. 实现基于cronTrigger的定时任务
一、导入相关的pom依赖
4.0.0 com.bruce.quartz.springboot.demo Quartz-SpringBoot-0426 1.0-SNAPSHOT org.springframework.boot spring-boot-starter-parent 1.5.2.RELEASE org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-tomcat provided org.springframework.boot spring-boot-starter-test test org.quartz-scheduler quartz 2.2.1 org.quartz-scheduler quartz-jobs 2.2.1 org.springframework.boot spring-boot-maven-plugin
二、创建SpringBoot的启动类
package com.anhong;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
/**
* @BelongsProject: Quartz-SpringBoot-0426
* @BelongsPackage: com.anhong
* @Author: anhong
* @CreateTime: 2020-10-24 09:24
* @Description: TODO
*/
@SpringBootApplication
public class APP {
public static void main(String[] args) {
SpringApplication.run(APP.class,args);
}
/**
* 向Spring容器中初始注入scheduler
*/
@Bean
public Scheduler scheduler() throws SchedulerException {
SchedulerFactory schedulerFactoryBean = new StdSchedulerFactory();
return schedulerFactoryBean.getScheduler();
}
}
三、创建quartz的作业类
package com.anhong.job;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* @BelongsProject: Quartz-SpringBoot-0426
* @BelongsPackage: com.anhong.job
* @Author: anhong
* @CreateTime: 2020-10-24 09:35
* @Description: 任务类，实现JOB接口，重写其中的方法
*/
public class MyJob implements Job {
@Override
public void execute(JobExecutionContext context) throws JobExecutionException {
SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
String time=simpleDateFormat.format(new Date());
System.out.println("各位老铁,早上好！节日快乐啊！"+time);
}
}
四、创建quartz的配置类
package com.anhong.config;
import com.anhong.bean.TaskInfo;
import com.bruce.job.MyJob;
import org.quartz.*;
import org.quartz.impl.matchers.GroupMatcher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Set;
/**
* @BelongsProject: Quartz-SpringBoot-0426
* @BelongsPackage: com.anhong.config
* @Author: anhong
* @CreateTime: 2020-10-24 10:10
* @Description: Quartz配置类
*/
@SpringBootConfiguration
public class QuartzConfig {
//任务调度器
@Autowired
private Scheduler scheduler;
/**
* 01-开启任务
*/
public void startJob(){
try {
openJob(scheduler);
//启动任务
scheduler.start();
} catch (SchedulerException e) {
e.printStackTrace();
}
}
/**
* 02-暂停某个任务
*/
public void pauseJob(String name,String group) throws Exception{
//任务的标识类
JobKey jobKey=new JobKey(name,group);
JobDetail jobDetail = scheduler.getJobDetail(jobKey);
if(jobDetail!=null){
//暂停某个任务
scheduler.pauseJob(jobKey);
}else{
System.out.println("该任务不存在!");
}
}
/**
* 03-查询所有的任务基本信息
* @return
*/
public List getAllJobsInfo() throws Exception{
List list=new ArrayList();
//所有任务组
List jobGroupNames = scheduler.getJobGroupNames();
for (String jobGroupName : jobGroupNames) {
Set jobKeys = scheduler.getJobKeys(GroupMatcher.groupEquals(jobGroupName));
for (JobKey jobKey : jobKeys) {
List triggers = scheduler.getTriggersOfJob(jobKey);
for (Trigger trigger : triggers) {
Trigger.TriggerState triggerState = scheduler.getTriggerState(trigger.getKey());
JobDetail jobDetail = scheduler.getJobDetail(jobKey);
String cronExpression=""; //cron表达式
String cronDescription=""; //描述信息
if(trigger instanceof CronTrigger){
CronTrigger cronTrigger=(CronTrigger)trigger;
//cron表达式
cronExpression = cronTrigger.getCronExpression();
cronDescription=cronTrigger.getDescription();
}
TaskInfo taskInfo=new TaskInfo();
taskInfo.setJobName(jobKey.getName());
taskInfo.setJobGroup(jobKey.getGroup());
taskInfo.setJobDescrption(jobDetail.getDescription());
taskInfo.setStatus(triggerState.name()); //任务的状态
taskInfo.setCronExpression(cronExpression);
taskInfo.setCronDescription(cronDescription);
list.add(taskInfo);
}
}
}
return list;
}
/**
* 开启一个任务
* @param scheduler
*/
private void openJob(Scheduler scheduler){
try {
//1.创建一个JobDetail
JobDetail jobDetail = JobBuilder.newJob(MyJob.class).withIdentity("job1", "group1").build();
//2.触发器表达式对象
CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule("0/4 * * * * ?");
//CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule("30 25 16 * * ?");
//3.准备一个触发器对象
CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "triggergroup1")
.withSchedule(cronScheduleBuilder).build();
//4.开始调度
scheduler.scheduleJob(jobDetail,cronTrigger);
} catch (SchedulerException e) {
e.printStackTrace();
} finally {
}
}
/**
* 04-恢复某个任务的执行
* @param name
* @param group
*/
public void resumeJob(String name,String group) throws Exception{
JobKey jobKey=new JobKey(name,group);
JobDetail jobDetail = scheduler.getJobDetail(jobKey);
if(jobDetail!=null){
scheduler.resumeJob(jobKey);
}else{
System.out.println("要恢复的任务不存在！");
}
}
/**
* 05-删除某一个任务
* @param name
* @param group
* @throws Exception
*/
public void deleteJob(String name,String group) throws Exception{
JobKey jobKey=new JobKey(name,group);
JobDetail jobDetail = scheduler.getJobDetail(jobKey);
if(jobDetail!=null){
scheduler.deleteJob(jobKey);
}else{
System.out.println("要删除的任务不存在！");
}
}
/**
* 06-动态的修改任务执行的表达式，触发规则
* @param name
* @param group
* @return
*/
public boolean modifyJob(String name,String group,String newTime) throws Exception{
Date date=null;
TriggerKey triggerKey=new TriggerKey(name,group);
Trigger trigger = scheduler.getTrigger(triggerKey);
CronTrigger cronTrigger=null;
if(trigger instanceof CronTrigger){
cronTrigger=(CronTrigger)trigger;
//表达式
String cronExpression = cronTrigger.getCronExpression();
if(!cronExpression.equalsIgnoreCase(newTime)){
System.out.println("需要修改原来的表达式："+cronExpression+"为:"+newTime);
CronScheduleBuilder cronScheduleBuilder = CronScheduleBuilder.cronSchedule(newTime);
//新的触发器
CronTrigger cronTrigger1 = TriggerBuilder.newTrigger().withIdentity(name, group).withSchedule(cronScheduleBuilder).build();
date = scheduler.rescheduleJob(triggerKey, cronTrigger1);
}else{
System.out.println("不用修改！和原来的一样！");
}
}
if(date!=null){
return true;
}else{
return false;
}
}
}
任务对象
package com.anhong.bean;
/**
* @BelongsProject: Quartz-SpringBoot-0426
* @BelongsPackage: com.anhong.bean
* @Author: anhong
* @CreateTime: 2020-10-24 10:24
* @Description: 任务对象
*/
public class TaskInfo {
private String jobName;
private String jobGroup;
private String jobDescrption;
private String status;
private String cronExpression;
private String cronDescription;
public String getJobName() {
return jobName;
}
public void setJobName(String jobName) {
this.jobName = jobName;
}
public String getJobGroup() {
return jobGroup;
}
public void setJobGroup(String jobGroup) {
this.jobGroup = jobGroup;
}
public String getJobDescrption() {
return jobDescrption;
}
public void setJobDescrption(String jobDescrption) {
this.jobDescrption = jobDescrption;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getCronExpression() {
return cronExpression;
}
public void setCronExpression(String cronExpression) {
this.cronExpression = cronExpression;
}
public String getCronDescription() {
return cronDescription;
}
public void setCronDescription(String cronDescription) {
this.cronDescription = cronDescription;
}
}
五、创建Quartz的监听类
package com.anhong; import org.quartz.Scheduler; import org.quartz.SchedulerException; import org.quartz.SchedulerFactory; import org.quartz.impl.StdSchedulerFactory; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.ApplicationListener; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.event.ContextRefreshedEvent; @Configuration public class ApplicationStartQuartzJobListener implements ApplicationListener{ @Autowired private QuartzScheduler quartzScheduler; /** * 初始启动quartz */ @Override public void onApplicationEvent(ContextRefreshedEvent event) { try { quartzScheduler.startJob(); System.out.println("任务已经启动..."); } catch (SchedulerException e) { e.printStackTrace(); } } /** * 初始注入scheduler * @return * @throws SchedulerException */ @Bean public Scheduler scheduler() throws SchedulerException{ SchedulerFactory schedulerFactoryBean = new StdSchedulerFactory(); return schedulerFactoryBean.getScheduler(); } }
六、创建控制器
package com.anhong.controller;
import com.anhong.bean.TaskInfo;
import com.anhong.config.QuartzConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
/**
* @BelongsProject: Quartz-SpringBoot-0426
* @BelongsPackage: com.anhong.controller
* @Author: anhong
* @CreateTime: 2020-10-24 10:43
* @Description: TODO
*/
@RestController
@RequestMapping("/quartz")
public class QuartzController {
@Autowired
QuartzConfig quartzConfig;
/**
* 01-开启一个定时任务
*
* @return
*/
@RequestMapping("/start")
public String startQuartzJob() {
try {
quartzConfig.startJob();
} catch (Exception e) {
e.printStackTrace();
return "定时任务开启异常~~~";
}
return "定时任务开启成功~~~";
}
/**
* 02-暂停任务
*
* @param name
* @param group
* @return
*/
@RequestMapping("/pauseJob")
public String pauseJob(String name, String group) {
try {
quartzConfig.pauseJob(name, group);
} catch (Exception e) {
e.printStackTrace();
return name + "任务暂停异常";
} finally {
}
return name + "任务被暂停";
}
/**
* 03-查询所有的任务基本信息
*
* @return
*/
@RequestMapping("/infos")
public List getAllJobsInfo() {
try {
return quartzConfig.getAllJobsInfo();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 04-恢复某个任务的执行
*
* @param name
* @param group
*/
@RequestMapping("/resumeJob")
public String resumeJob(String name, String group) {
try {
quartzConfig.resumeJob(name, group);
} catch (Exception e) {
e.printStackTrace();
return name + "任务被恢复异常!";
} finally {
}
return name + "任务被恢复啦!";
}
/**
* 05-删除某一个任务
*
* @param name
* @param group
* @throws Exception
*/
@RequestMapping("/deleteJob")
public String deleteJob(String name, String group) {
try {
quartzConfig.deleteJob(name, group);
} catch (Exception e) {
e.printStackTrace();
return name + "任务删除异常!";
} finally {
}
return name + "任务被删除啦!";
}
/**
* 06-动态的修改任务执行的表达式，触发规则
*
* @param name
* @param group
* @return
*/
@RequestMapping("/modifyJob")
public String modifyJob(String name, String group, String newTime) {
boolean flag = false;
try {
flag = quartzConfig.modifyJob(name, group, newTime);
} catch (Exception e) {
e.printStackTrace();
} finally {
}
if (flag) {
return name + "任务时间表达式修改为:" + newTime;
} else {
return name + "任务时间表达式失败!";
}
}
}
总结：SpringBoot整合Quertz实现定时调度的大致步骤实现就如上，在很多微服务商城项目上都会用到定时调度，在根据实际的项目业务需要，我们只需要把以上的一些配置做适当的修改来满足自己业务的需要。
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