Spring Quartz2 动态任务的实例详解

spring quartz2 动态任务的实例详解

此处使用的是quartz中simpleschedulebuilder类，非cronschedulebuilder，cronschedulebuilder是cron表达式的。具体请自行百度。

实现代码： 

/** 
   * 新增任务 
   * @param schedulejob 
   * @throws exception 
   */ 
  @override 
  @suppresswarnings("unchecked") 
  public void addjobsimple(schedulejob schedulejob) throws exception{ 
    triggerkey triggerkey = triggerkey.triggerkey(schedulejob.getjobname(), schedulejob.getjobgroup()); 
    //任务触发 
    trigger trigger = scheduler.gettrigger(triggerkey); 
    if (null == trigger) { 
      jobdetail jobdetail = jobbuilder.newjob((class<? extends job>) class.forname(schedulejob.getclazz())) 
       .withidentity(schedulejob.getjobname(), schedulejob.getjobgroup()).build(); 
      jobdetail.getjobdatamap().put("schedulejob", schedulejob); 
       
      simpleschedulebuilder simpleschedulebuilder = simpleschedulebuilder.simpleschedule(); 
      if("秒".equals(schedulejob.gettimetype()) ||  
          "second".equalsignorecase(schedulejob.gettimetype())){ 
        simpleschedulebuilder.withintervalinseconds(schedulejob.gettimevalue()).repeatforever(); 
      }else if("分".equals(schedulejob.gettimetype()) || "分钟".equals(schedulejob.gettimetype()) ||  
          "minute".equalsignorecase(schedulejob.gettimetype())){ 
        simpleschedulebuilder.withintervalinminutes(schedulejob.gettimevalue()).repeatforever(); 
      }else if("时".equals(schedulejob.gettimetype()) || "小时".equals(schedulejob.gettimetype()) ||  
          "hour".equalsignorecase(schedulejob.gettimetype())){ 
        simpleschedulebuilder.withintervalinhours(schedulejob.gettimevalue()).repeatforever(); 
      }else if("天".equals(schedulejob.gettimetype()) ||  
          "date".equalsignorecase(schedulejob.gettimetype())){ 
        simpleschedulebuilder.withintervalinhours(schedulejob.gettimevalue()).repeatforever(); 
      } 
      schedulebuilder<simpletrigger> schedbuilder = simpleschedulebuilder.withmisfirehandlinginstructionnextwithremainingcount(); 
       
      trigger =triggerbuilder.newtrigger().withidentity(schedulejob.getjobname(), schedulejob.getjobgroup()) 
          .withschedule(schedbuilder).build(); 
      trigger = triggerbuilder.newtrigger().withidentity(schedulejob.getjobname(), schedulejob.getjobgroup()).withschedule(schedbuilder).build(); 
      scheduler.schedulejob(jobdetail, trigger); 
      log.info(cc.log_prefix + "新增简单任务："+jasonutils.object2string(schedulejob)); 
    }else { 
      this.updatejobcron(schedulejob); 
    } 
  } 

需要注意是的，当定时任务只执行一次时，就要仔细看代码，如上面的简单定时任务，刚开始是我这样的：

simpleschedulebuilder.withintervalinseconds(schedulejob.gettimevalue()); 

结果只执行一次，而我需要的是不断循环执行，最后改成：

simpleschedulebuilder.withintervalinseconds(schedulejob.gettimevalue()).repeatforever(); 

可以看出，后面多了个：repeatforever()，表示永远重复。 

如果是希望执行多少次后不执行，就使用：.withrepeatcount(triggerrepeatcount)，如下：

simpleschedulebuilder.withintervalinhours(schedulejob.gettimevalue()).withrepeatcount(triggerrepeatcount); 

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