Spring-Boot集成持久化Quartz定时任务管理和界面展示

  SpringBoot集成持久化Quartz定时任务管理和界面展示  前言本文是对之前的一篇文章Spring+SpringMVC+mybatis+Quartz整合代码部分做的一个修改和补充，其中最大的变化就是后台框架变成了SpringBoot。本工程所用到的技术或工具有：SpringBootMybatisQuartzPageHelperVueJSElementUIMySql数据库正文配置本例中仍然是使用mysql数据库作为Quartz任务持久化的存储载体。对于如何在Mysql数据库中建立表，在上一篇Spring+SpringMVC+mybatis+Quartz整合中已经有了详细的介绍。这里我们来看SpringBoot工程的建立方法。在Spring网站上有关于建立SpringBoot工程的脚手架，我们按如下图的方式设置，然后点击GenerateProject即可。接着我们在IDE中导入这个maven工程，然后可以看到src/main/resource下面有一个名字为application.properties的文件，里面的内容是空的。我们删除这个文件，然后在这个目录下新建一个名为application.yml的文件。这是配置SpringBoot工程的另一种方式，也是SpringBoot官方推荐的一种配置方式。我们在新建的这个yml文件中，加入如下代码spring:datasource:url:jdbc:mysql://190.0.1.88:3306/hello_test?useUnicode=trueusername:rootpassword:rootdriver-class-name:com.mysql.jdbc.Drivermybatis:mapper-locations:-classpath:com/example/demo/mapper/*.xmltype-aliases-package:com.example.demo.entity上面的代码是对数据库和mybatis的一些配置。接着我们在当前目录下再新建一个名为quartz.properties的文件。这是对Quartz的配置文件。加入如下代码：#固定前缀org.quartz#主要分为scheduler、threadPool、jobStore、plugin等部分##org.quartz.scheduler.instanceName=DefaultQuartzSchedulerorg.quartz.scheduler.rmi.export=falseorg.quartz.scheduler.rmi.proxy=falseorg.quartz.scheduler.wrapJobExecutionInUserTransaction=false#实例化ThreadPool时，使用的线程类为SimpleThreadPoolorg.quartz.threadPool.class=org.quartz.simpl.SimpleThreadPool#threadCount和threadPriority将以setter的形式注入ThreadPool实例#并发个数org.quartz.threadPool.threadCount=5#优先级org.quartz.threadPool.threadPriority=5org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread=trueorg.quartz.jobStore.misfireThreshold=5000#默认存储在内存中#org.quartz.jobStore.class=org.quartz.simpl.RAMJobStore#持久化org.quartz.jobStore.class=org.quartz.impl.jdbcjobstore.JobStoreTXorg.quartz.jobStore.tablePrefix=QRTZ_org.quartz.jobStore.dataSource=qzDSorg.quartz.dataSource.qzDS.driver=com.mysql.jdbc.Driverorg.quartz.dataSource.qzDS.URL=jdbc:mysql://190.0.1.88:3306/hello_test?useUnicode=true&characterEncoding=UTF-8org.quartz.dataSource.qzDS.user=rootorg.quartz.dataSource.qzDS.password=rootorg.quartz.dataSource.qzDS.maxConnections=10可以看出和上一篇文章的配置文件完成相同。接着我们在com.example.demo下新建一个名为SchedulerConfig.java的文件。在这个文件里，对刚才我们新建的quartz.properties文件进行读取。packagecom.example.demo;importjava.io.IOException;importjava.util.Properties;importorg.quartz.Scheduler;importorg.quartz.ee.servlet.QuartzInitializerListener;importorg.springframework.beans.factory.config.PropertiesFactoryBean;importorg.springframework.context.annotation.Bean;importorg.springframework.context.annotation.Configuration;importorg.springframework.core.io.ClassPathResource;importorg.springframework.scheduling.quartz.SchedulerFactoryBean;@ConfigurationpublicclassSchedulerConfig{@Bean(name="SchedulerFactory")publicSchedulerFactoryBeanschedulerFactoryBean()throwsIOException{SchedulerFactoryBeanfactory=newSchedulerFactoryBean();factory.setQuartzProperties(quartzProperties());returnfactory;}@BeanpublicPropertiesquartzProperties()throwsIOException{PropertiesFactoryBeanpropertiesFactoryBean=newPropertiesFactoryBean();propertiesFactoryBean.setLocation(newClassPathResource("/quartz.properties"));//在quartz.properties中的属性被读取并注入后再初始化对象propertiesFactoryBean.afterPropertiesSet();returnpropertiesFactoryBean.getObject();}/**quartz初始化监听器*/@BeanpublicQuartzInitializerListenerexecutorListener(){returnnewQuartzInitializerListener();}/**通过SchedulerFactoryBean获取Scheduler的实例*/@Bean(name="Scheduler")publicSchedulerscheduler()throwsIOException{returnschedulerFactoryBean().getScheduler();}}注意最下方的QuartzInitializerListener。在SpringMVC中，我们在配置Quartz的时候，要在web.xml中加入如下配置：org.quartz.ee.servlet.QuartzInitializerListener这个监听器可以监听到工程的启动，在工程停止再启动时可以让已有的定时任务继续进行。由于我们目前的工程是SpringBoot，没有web.xml的配置方式，所以我们在上文的SchedulerConfig类中直接注入了这个Bean。实现先来看Job类。首先设置一个BaseJob接口，用来继承Job类：packagecom.example.demo.job;importorg.quartz.Job;importorg.quartz.JobExecutionContext;importorg.quartz.JobExecutionException;publicinterfaceBaseJobextendsJob{publicvoidexecute(JobExecutionContextcontext)throwsJobExecutionException;}然后两个Job类用来实现BaseJob类：HelloJobpackagecom.example.demo.job;importjava.util.Date;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importorg.quartz.JobExecutionContext;importorg.quartz.JobExecutionException;publicclassHelloJobimplementsBaseJob{privatestaticLogger_log=LoggerFactory.getLogger(HelloJob.class);publicHelloJob(){}publicvoidexecute(JobExecutionContextcontext)throwsJobExecutionException{_log.error("HelloJob执行时间:"+newDate());}}NewJobpackagecom.example.demo.job;importjava.util.Date;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importorg.quartz.JobExecutionContext;importorg.quartz.JobExecutionException;publicclassNewJobimplementsBaseJob{privatestaticLogger_log=LoggerFactory.getLogger(NewJob.class);publicNewJob(){}publicvoidexecute(JobExecutionContextcontext)throwsJobExecutionException{_log.error("NewJob执行时间:"+newDate());}}至于这样做的目的，我们可以先看一下Controllerpackagecom.example.demo.controller;importjava.util.HashMap;importjava.util.Map;importorg.quartz.CronScheduleBuilder;importorg.quartz.CronTrigger;importorg.quartz.JobBuilder;importorg.quartz.JobDetail;importorg.quartz.JobKey;importorg.quartz.Scheduler;importorg.quartz.SchedulerException;importorg.quartz.TriggerBuilder;importorg.quartz.TriggerKey;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;importorg.springframework.beans.factory.annotation.Autowired;importorg.springframework.beans.factory.annotation.Qualifier;importorg.springframework.web.bind.annotation.GetMapping;importorg.springframework.web.bind.annotation.PostMapping;importorg.springframework.web.bind.annotation.RequestMapping;importorg.springframework.web.bind.annotation.RequestParam;importorg.springframework.web.bind.annotation.RestController;importcom.example.demo.entity.JobAndTrigger;importcom.example.demo.job.BaseJob;importcom.example.demo.service.IJobAndTriggerService;importcom.github.pagehelper.PageInfo;@RestController@RequestMapping(value="/job")publicclassJobController{@AutowiredprivateIJobAndTriggerServiceiJobAndTriggerService;//加入Qulifier注解，通过名称注入bean@Autowired@Qualifier("Scheduler")privateSchedulerscheduler;privatestaticLoggerlog=LoggerFactory.getLogger(JobController.class);@PostMapping(value="/addjob")publicvoidaddjob(@RequestParam(value="jobClassName")StringjobClassName,@RequestParam(value="jobGroupName")StringjobGroupName,@RequestParam(value="cronExpression")StringcronExpression)throwsException{addJob(jobClassName,jobGroupName,cronExpression);}publicvoidaddJob(StringjobClassName,StringjobGroupName,StringcronExpression)throwsException{//启动调度器scheduler.start();//构建job信息JobDetailjobDetail=JobBuilder.newJob(getClass(jobClassName).getClass()).withIdentity(jobClassName,jobGroupName).build();//表达式调度构建器(即任务执行的时间)CronScheduleBuilderscheduleBuilder=CronScheduleBuilder.cronSchedule(cronExpression);//按新的cronExpression表达式构建一个新的triggerCronTriggertrigger=TriggerBuilder.newTrigger().withIdentity(jobClassName,jobGroupName).withSchedule(scheduleBuilder).build();try{scheduler.scheduleJob(jobDetail,trigger);}catch(SchedulerExceptione){System.out.println("创建定时任务失败"+e);thrownewException("创建定时任务失败");}}@PostMapping(value="/pausejob")publicvoidpausejob(@RequestParam(value="jobClassName")StringjobClassName,@RequestParam(value="jobGroupName")StringjobGroupName)throwsException{jobPause(jobClassName,jobGroupName);}publicvoidjobPause(StringjobClassName,StringjobGroupName)throwsException{scheduler.pauseJob(JobKey.jobKey(jobClassName,jobGroupName));}@PostMapping(value="/resumejob")publicvoidresumejob(@RequestParam(value="jobClassName")StringjobClassName,@RequestParam(value="jobGroupName")StringjobGroupName)throwsException{jobresume(jobClassName,jobGroupName);}publicvoidjobresume(StringjobClassName,StringjobGroupName)throwsException{scheduler.resumeJob(JobKey.jobKey(jobClassName,jobGroupName));}@PostMapping(value="/reschedulejob")publicvoidrescheduleJob(@RequestParam(value="jobClassName")StringjobClassName,@RequestParam(value="jobGroupName")StringjobGroupName,@RequestParam(value="cronExpression")StringcronExpression)throwsException{jobreschedule(jobClassName,jobGroupName,cronExpression);}publicvoidjobreschedule(StringjobClassName,StringjobGroupName,StringcronExpression)throwsException{try{TriggerKeytriggerKey=TriggerKey.triggerKey(jobClassName,jobGroupName);//表达式调度构建器CronScheduleBuilderscheduleBuilder=CronScheduleBuilder.cronSchedule(cronExpression);CronTriggertrigger=(CronTrigger)scheduler.getTrigger(triggerKey);//按新的cronExpression表达式重新构建triggertrigger=trigger.getTriggerBuilder().withIdentity(triggerKey).withSchedule(scheduleBuilder).build();//按新的trigger重新设置job执行scheduler.rescheduleJob(triggerKey,trigger);}catch(SchedulerExceptione){System.out.println("更新定时任务失败"+e);thrownewException("更新定时任务失败");}}@PostMapping(value="/deletejob")publicvoiddeletejob(@RequestParam(value="jobClassName")StringjobClassName,@RequestParam(value="jobGroupName")StringjobGroupName)throwsException{jobdelete(jobClassName,jobGroupName);}publicvoidjobdelete(StringjobClassName,StringjobGroupName)throwsException{scheduler.pauseTrigger(TriggerKey.triggerKey(jobClassName,jobGroupName));scheduler.unscheduleJob(TriggerKey.triggerKey(jobClassName,jobGroupName));scheduler.deleteJob(JobKey.jobKey(jobClassName,jobGroupName));}@GetMapping(value="/queryjob")publicMapqueryjob(@RequestParam(value="pageNum")IntegerpageNum,@RequestParam(value="pageSize")IntegerpageSize){PageInfojobAndTrigger=iJobAndTriggerService.getJobAndTriggerDetails(pageNum,pageSize);Mapmap=newHashMap();map.put("JobAndTrigger",jobAndTrigger);map.put("number",jobAndTrigger.getTotal());returnmap;}publicstaticBaseJobgetClass(Stringclassname)throwsException{Classclass1=Class.forName(classname);return(BaseJob)class1.newInstance();}}注意最下面的这个方法，根据类名称，通过反射得到该类，然后创建一个BaseJob的实例。由于NewJob和HelloJob都实现了BaseJob，所以这里不需要我们手动去判断。这里涉及到了一些java多态调用的机制，篇幅原因不多做解释。其他的部分，例如service层，dao层以及mapper，与上一篇文章几乎完全相同。我们可以看一下现在的工程结构：我们可以看到static下的JobManager.html，这个是前端的一个简单的管理页面。SpringBoot的web工程中，静态页面可以放在static目录下。这里贴一下代码，与之前几乎没区别：查询添加