spring框架整合使用定时任务框架java quartz的示例代码配置

约定不等于承诺〃 2022-07-26 05:22 3阅读 0赞

原文：[spring框架整合使用定时任务框架java quartz的示例代码配置][spring_java quartz]

源代码下载地址：[http://www.zuidaima.com/share/1775583461723136.htm][spring_java quartz]

有时候我们的任务(Job)需要再某些任务完成之后才能进行；例如从旧的数据库批量导数据的时候；需要现将被其他数据依赖的数据导入新的数据库；然后再进行关系的导入.。在这种情况下我们就可以使用Quartz的listener来做文章了。

首先我们写一个主任务的类，命名为MainJob；她的作用是作为一系列任务的开始点。  
MainJob.java

package jobs;
    
     import org.apache.log4j.Logger;
     import org.quartz.JobExecutionContext;
     import org.quartz.JobExecutionException;
     import org.springframework.scheduling.quartz.QuartzJobBean;
    
     public class MainJob extends QuartzJobBean {
     private Logger logger=Logger.getLogger(getClass());
     @Override
     protected void executeInternal(JobExecutionContext arg0)
     throws JobExecutionException {
     // TODO Auto-generated method stub
     logger.debug("Just say hi.");
     }
    
    }

然后我们新建另外一个任务（SecondJob）作为后续任务：  
SecondJob.java

package jobs;
    
     import org.apache.log4j.Logger;
     import org.quartz.JobExecutionContext;
     import org.quartz.JobExecutionException;
     import org.springframework.scheduling.quartz.QuartzJobBean;
    
     public class SecondJob extends QuartzJobBean {
     private Logger logger=Logger.getLogger(getClass());
     @Override
     protected void executeInternal(JobExecutionContext arg0)
     throws JobExecutionException {
     // TODO Auto-generated method stub
     logger.debug("I'm the second job.");
     }
    
    }

创建一个TriggerListener,重写其triggerComplete方法，并且添加一些方便spring注入的属性和方法。  
NextJobTriggerListener.java

package listeners;
    
     import org.apache.log4j.Logger;
     import org.quartz.JobDetail;
     import org.quartz.JobExecutionContext;
     import org.quartz.Scheduler;
     import org.quartz.Trigger;
     import org.quartz.listeners.TriggerListenerSupport;
     import org.springframework.scheduling.quartz.QuartzJobBean;
     import org.springframework.scheduling.quartz.SimpleTriggerBean;
    
     public class NextJobTriggerListener extends TriggerListenerSupport {
     private Logger logger=Logger.getLogger(getClass());
     private String name;
     public String getName() {
     return this.name;
     }
     public void setName(String name)
     {
     this.name=name;
     }
     private SimpleTriggerBean nextTrigger;
     public void setNextTrigger(SimpleTriggerBean nextTrigger) {
     this.nextTrigger=nextTrigger;
     }
     @Override
     public void triggerComplete(Trigger trigger, JobExecutionContext context, int code) {
     try{
     Scheduler schduler=context.getScheduler();
     JobDetail nextJob=nextTrigger.getJobDetail();
     //查找名称和即将加入的任务一样的任务
     JobDetail oldJob=schduler.getJobDetail(nextJob.getName(),nextJob.getGroup());
     //查找名称和即将加入的触发器一样的触发器
     Trigger oldTrigger=schduler.getTrigger(nextTrigger.getName(),nextTrigger.getGroup());
     
     if(oldJob==null&&oldTrigger==null)//同名的任务和触发器都不存在
     {
     logger.debug("inside scheduleJob."+code);
     schduler.scheduleJob(nextJob,nextTrigger);
     }else//同名的任务或触发器
     {
     
     logger.debug("oldJob==null:"+(oldJob==null));
     logger.debug("oldTrigger==null:"+(oldTrigger==null)); 
     }
     super.triggerComplete(trigger, context, code);
     }catch(Exception e)
     {
     e.printStackTrace();
     }
     }
     
    
    }

配置spring 的applicationContext.xml  
applicationContext.xml

<?xml version="1.0"encoding="UTF-8"?> 
     <beans xmlns="http://www.springframework.org/schema/beans"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns:jee="http://www.springframework.org/schema/jee"
     xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.0.xsd
     http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.0.xsd"> 
      
     <bean id="mainJob"
     class="org.springframework.scheduling.quartz.JobDetailBean">
      
     <property name="jobClass">
     <value> jobs.MainJob </value> 
     </property> 
     </bean> 
     
      
     <bean id="mainTriggerListener"
     class="listeners.NextJobTriggerListener">
      
     <property name="nextTrigger" ref="secondTrigger"></property>
      
     <property name="name" value="mainTriggerListener"></property>
     </bean> 
    
    
      
     <bean id="mainTrigger"
     class="org.springframework.scheduling.quartz.SimpleTriggerBean">
     <property name="jobDetail">
      
     <ref bean="mainJob" /> 
     </property> 
      
     <property name="startDelay">
     <value> 6000 </value> 
     </property> 
      
     <property name="repeatCount">
     <value> </value> 
     </property> 
      
     <property name="repeatInterval">
     <value> 3600000 </value> 
     </property> 
     <property name="triggerListenerNames">
     <list> 
     <value> mainTriggerListener </value> 
     </list> 
     </property> 
     </bean> 
     
      
     <bean id="secondJob"
     class="org.springframework.scheduling.quartz.JobDetailBean">
      
     <property name="jobClass">
     <value> jobs.SecondJob </value> 
     </property> 
     </bean> 
    
      
     <bean id="secondTrigger"
     class="org.springframework.scheduling.quartz.SimpleTriggerBean">
     <property name="jobDetail">
      
     <ref bean="secondJob" /> 
     </property> 
      
     <property name="startDelay">
     <value> 6000 </value> 
     </property> 
      
     <property name="repeatCount">
     <value> </value> 
     </property> 
      
     <property name="repeatInterval">
      
     <value> 6000 </value> 
     </property> 
     </bean> 
     
      
     <bean
     class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
      
     <property name="quartzProperties">
     <props> 
     <prop key="org.quartz.threadPool.class">
     org.quartz.simpl.SimpleThreadPool
     </prop> 
     <prop key="org.quartz.threadPool.threadCount"> </prop> 
     <prop key="org.quartz.threadPool.threadPriority">
     5
     </prop> 
     <prop
     key="org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread">
     true
     </prop> 
    
     </props> 
     </property> 
      
     <property name="triggers">
     <list> 
      
     <ref bean="mainTrigger"/> 
     </list> 
     </property> 
     <property name="triggerListeners">
     <list> 
      
     <ref bean="mainTriggerListener" /> 
     </list> 
     </property> 
     </bean> 
     </beans>

开启服务器，输出

DEBUG [ MainJob.executeInternal(14) ] Just say hi.
    DEBUG [ NextJobTriggerListener.triggerComplete(38) ] inside scheduleJob .3 
    DEBUG [SecondJob.executeInternal(14)] I'm the second job.
    DEBUG [ NextJobTriggerListener.triggerComplete(43) ] oldJob==null:false
    DEBUG [ NextJobTriggerListener.triggerComplete(44) ] oldTrigger== null:false

另外这里一个任务只绑定了一个简单的触发器，这样做是为了比较方便地可以检测到任务完成的情况；至于任务的具体内容就任由大家发挥了。写这篇文章希望能有人在其中获得启发。  
  
Let life be beautiful like summer flowers and death like autumn leaves.

[spring_java quartz]: http://www.zuidaima.com/share/1775583461723136.htm