spring quartz2.2.1 cluster

quartz 持久化介绍

1 大家都清楚quartz最基本的概念就是job，在job内调用具体service完成具体功能，quartz需要把每个job存储起来，方便调度，quartz存储job方式就分三种，我们最常用的也是quartz默认的是RAMJobStore，RAMJobStore顾名思义就是把job的相关信息存储在内存里，如果用spring配置quartz的job信息的话，所有信息是配置在xml里，当spirng context启动的时候就把xml里的job信息装入内存。这一性质就决定了一旦JVM挂掉或者容器挂掉，内存中的job信息就随之消失，无法持久化。另外两种方式是JobStoreTX和JobStoreCMT，暂时不讨论这两者的区别，使用这两种JobStore，quartz就会通过jdbc直连或者应用服务器jndi连接数据库，读取配置在数据库里的job初始化信息，并且把job通过java序列化到数据库里，这样就使得每个job信息得到了持久化，即使在jvm或者容器挂掉的情况下，也能通过数据库感知到其他job的状态和信息。 
 2 quartz集群各节点之间是通过同一个数据库实例(准确的说是同一个数据库实例的同一套表)来感知彼此的。 

quartz实现代码

1.新建quartz相关表

链接：http://download.csdn.net/detail/fmynjy/9705319

2.quartz.properties

#==============================================================  
#Configure Main Scheduler Properties  
#==============================================================   
org.quartz.scheduler.instanceName = DefaultQuartzScheduler
org.quartz.scheduler.instanceId = AUTO  

#==============================================================  
#Configure ThreadPool  
#============================================================== 
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
org.quartz.threadPool.threadCount = 10
org.quartz.threadPool.threadPriority = 5
org.quartz.threadPool.threadsInheritContextClassLoaderOfInitializingThread = true

#==============================================================  
#Configure JobStore  
#============================================================== 
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.impl.jdbcjobstore.JobStoreCMT
org.quartz.jobStore.tablePrefix = QRTZ_
org.quartz.jobStore.maxMisfiresToHandleAtATime=10
org.quartz.jobStore.isClustered = true  
org.quartz.jobStore.clusterCheckinInterval = 20000  

3.spring-scheduler.xml:

	使用Spring的 Scheduled的定时任务配置
    
       
      
           
          
                  
                       
                  
          
          
          
           
          
          
         
      
    
      
      
          
                com.test.util.schedule.MyDetailQuartzJobBean  
          
          
                  
          
        
      
      
          
                  
          
          
       		
             */30 * * * * ?  
          
    

4.MyDetailQuartzJobBean.java

package com.test.util.schedule;

import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.JobExecutionContext;  
import org.quartz.JobExecutionException;  
import org.springframework.context.ApplicationContext;  
import org.springframework.scheduling.quartz.QuartzJobBean;  
   
/** 
 * Spring调度任务 
 * @author admin
 * 
 */  
public class MyDetailQuartzJobBean extends QuartzJobBean {  
	/**
	 * 日志打印
	 */
	private static final Log log = LogFactory.getLog(MyDetailQuartzJobBean.class);
    	private String targetObject;    
    	private String targetMethod;    
    	private ApplicationContext applicationContext;   
    @Override  
    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {  
     try {    
            Object otargetObject = applicationContext.getBean(targetObject);    
            Method m = null;    
            try {    
                m = otargetObject.getClass().getMethod(targetMethod, new Class[] {JobExecutionContext.class});    
                m.invoke(otargetObject, new Object[] {context});    
            } catch (SecurityException e) {    
            	log.info(e.getMessage());    
            } catch (NoSuchMethodException e) {    
            	log.info(e.getMessage());  
            }    
        } catch (Exception e) {    
            throw new JobExecutionException(e);    
        }    
    }  
    public void setApplicationContext(ApplicationContext applicationContext) {    
        this.applicationContext = applicationContext;    
    }    
    public void setTargetObject(String targetObject) {    
        this.targetObject = targetObject;    
    }    
    
    public void setTargetMethod(String targetMethod) {    
        this.targetMethod = targetMethod;    
    }    
}  

5. SpringCronJob.java

package com.test.util.schedule;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.quartz.JobExecutionContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.test.service.PMenuService;

@Component 
public class SpringCronJob{

	private static final Log log = LogFactory.getLog(SpringCronJob.class);

	@Autowired
	private PMenuService pmService;
	
	/**
	 * 定时打印
	 */
	public void pmenuCount(JobExecutionContext context){
		log.info("执行结果为：" + pmService.count());
	}
}

注：

本文实现基于spirng4.0以上版本，quartz-2.2.1版本，低版本的quartz需要的spring版本也不同，否则会出现各种错误