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  • Springboot 集成Quartz的使用(解决quartz的job无法注入spring对象的问题)

                                                              

    1、普通的定时任务我们用Sping 自带的scheduler就可以完成,但是需要从数据库动态配置可能要用到Quartz了。

    2、遇到的问题:单独只定时一个任务,可以直接写一个类,设置 jobDetail和cronTrigger,放到SchedulerFactoryBean中方可 。具体示例:

    package pft.web.timing;

    import org.quartz.Trigger;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.scheduling.quartz.CronTriggerFactoryBean;
    import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean;
    import org.springframework.scheduling.quartz.SchedulerFactoryBean;

    @Configuration
    public class QuartzConfigration {

    @Bean(name = "jobDetail")
    public MethodInvokingJobDetailFactoryBean detailFactoryBean(ScheduledJob task) {//ScheduledJob 为定时任务的类
            // ScheduleTask为需要执行的任务
    MethodInvokingJobDetailFactoryBean jobDetail = new MethodInvokingJobDetailFactoryBean();
    /*
    * 是否并发执行
    * 例如每5s执行一次任务,但是当前任务还没有执行完,就已经过了5s了,
    * 如果此处为true,则下一个任务会bing执行,如果此处为false,则下一个任务会等待上一个任务执行完后,再开始执行
    */
    jobDetail.setConcurrent(true);

    jobDetail.setName("scheduler");// 设置任务的名字
    jobDetail.setGroup("scheduler_group");// 设置任务的分组,这些属性都可以存储在数据库中,在多任务的时候使用

    /*
    * 这两行代码表示执行task对象中的scheduleTest方法。定时执行的逻辑都在scheduleTest。
    */
    jobDetail.setTargetObject(task);

    jobDetail.setTargetMethod("scheduleTest");//scheduleTest 定时任务中要执行的方法
            return jobDetail;
    }

    @Bean(name = "jobTrigger")
    public CronTriggerFactoryBean cronJobTrigger(MethodInvokingJobDetailFactoryBean jobDetail) {
    CronTriggerFactoryBean tigger = new CronTriggerFactoryBean();
    tigger.setJobDetail(jobDetail.getObject());
    tigger.setCronExpression("0/6 * * * * ?");// 表示每隔6秒钟执行一次
    //tigger.set
    tigger.setName("myTigger");// trigger的name
    return tigger;

    }

    @Bean(name = "scheduler")
    public SchedulerFactoryBean schedulerFactory(Trigger cronJobTrigger) {
    SchedulerFactoryBean bean = new SchedulerFactoryBean();
    //设置是否任意一个已定义的Job会覆盖现在的Job。默认为false,即已定义的Job不会覆盖现有的Job。
    bean.setOverwriteExistingJobs(true);
    // 延时启动,应用启动5秒后 ,定时器才开始启动
    bean.setStartupDelay(5);
    // 注册定时触发器
    bean.setTriggers(cronJobTrigger);
    return bean;
    }
    //多任务时的Scheduler,动态设置Trigger。一个SchedulerFactoryBean可能会有多个Trigger
    @Bean(name = "multitaskScheduler")
    public SchedulerFactoryBean schedulerFactoryBean(){
    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
    return schedulerFactoryBean;
    }
    }
    3、要有多个定时任务时:(参考地址:https://blog.csdn.net/mengruobaobao/article/details/79106343)
    一、首先新建 MyJobFactory ,
    目的是:

    在具体的Job 中 需要Spring 注入一些Service。所以我们要自定义一个jobfactory, 让其在具体job 类实例化时 使用Spring 的API 来进行依赖注入。
    package pft.web.timing;

    import org.quartz.spi.TriggerFiredBundle;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
    import org.springframework.scheduling.quartz.AdaptableJobFactory;
    import org.springframework.stereotype.Component;

    @Component
    public class MyJobFactory extends AdaptableJobFactory {

    @Autowired
    private AutowireCapableBeanFactory capableBeanFactory;

    @Override
    protected Object createJobInstance(TriggerFiredBundle bundle) throws Exception {
    // 调用父类的方法
    Object jobInstance = super.createJobInstance(bundle);
    // 进行注入
    capableBeanFactory.autowireBean(jobInstance);
    return jobInstance;

    }
    }
    二、配置 SchedulerFactoryBean
    package pft.web.timing;

    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.scheduling.quartz.SchedulerFactoryBean;

    @Configuration
    public class SchedulerListener {

    @Autowired
    private MyJobFactory myJobFactory;

    @Bean
    public SchedulerFactoryBean schedulerFactoryBean(){
    SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();
    schedulerFactoryBean.setJobFactory(myJobFactory);//将job实例化,能够操作进行Spring 注入

    return schedulerFactoryBean;
    }
    }

    3、分别给定时任务设置 jobDetail和cronTrigger ,注册定时触发器 SchedulerFactoryBean
    package pft.web.timing;


    import org.quartz.*;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.scheduling.quartz.SchedulerFactoryBean;
    import org.springframework.stereotype.Service;

    @Service
    public class MyScheduler {

    @Autowired
    SchedulerFactoryBean schedulerFactoryBean;

    public void scheduleJobs() throws SchedulerException {
    Scheduler scheduler = schedulerFactoryBean.getScheduler();
    startJob1(scheduler);
    startJob2(scheduler);
    }

    private void startJob1(Scheduler scheduler) throws SchedulerException{
    JobDetail jobDetail = JobBuilder.newJob(ScheduledJob.class)
    .withIdentity("job1", "group1").build();
    CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule("0/3 * * * * ?");
    CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("trigger1", "group1")
    .withSchedule(scheduleBuilder).build();
    scheduler.scheduleJob(jobDetail,cronTrigger);
    }

    private void startJob2(Scheduler scheduler) throws SchedulerException{
    JobDetail jobDetail = JobBuilder.newJob(ScheduledJob2.class)
    .withIdentity("job2", "group1").build();
    CronScheduleBuilder scheduleBuilder = CronScheduleBuilder.cronSchedule("0/6 * * * * ?");
    CronTrigger cronTrigger = TriggerBuilder.newTrigger().withIdentity("trigger2", "group1")
    .withSchedule(scheduleBuilder).build();
    scheduler.scheduleJob(jobDetail,cronTrigger);
    }
    }

    四、控制层调用 scheduleJobs 方法,开启定时器
    亲测、能够在job中的注入spring

    
    
     
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  • 原文地址:https://www.cnblogs.com/weiyuanquyu/p/9428064.html
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