Quartz之JobListener _JAVA_编程开发_程序员俱乐部

[size=large]问题1:我想在一个任务执行后在执行第二个任务怎么办呢
Quartz:使用JobListener(任务监听器可实现)
下面示例中演示了相互传递,请参见注释
Job1Listener.java

public class Job1Listener implements JobListener {   
  
    private static Logger _log = LoggerFactory.getLogger(Job1Listener.class);   
       
    public String getName() {   
        return "job1_to_job2";   
    }   
  
    public void jobToBeExecuted(JobExecutionContext inContext) {   
        //任务监听器执行任务1之前你可以选择的操作   
        _log.error("Job1Listener says: Job Is about to be executed.");   
        //向任务1传递数据   
        inContext.getJobDetail().getJobDataMap().put("username", "天涯");   
    }   
  
    public void jobExecutionVetoed(JobExecutionContext inContext) {   
        _log.error("Job1Listener says: Job Execution was vetoed.");   
    }   
  
    public void jobWasExecuted(JobExecutionContext inContext,JobExecutionException inException) {   
        _log.error("Job1Listener says: Job was executed.");   
           
        //执行任务2   
        JobDetail job2 = newJob(SimpleJob2.class)   
            .withIdentity("job2")   
            .usingJobData("username", "david") //向任务2传递数据传递可成功接收   
            .build();   
           
        Trigger trigger = (SimpleTrigger) newTrigger()    
            .withIdentity("job2Trigger")   
            .startNow()               
            .build();   
           
        //向任务2传递数据,这里不知怎么回事,传递参数在任务2取值为: null   
        inContext.getJobDetail().getJobDataMap().put("sex", "男");   
           
        try {   
            // schedule the job to run!   
            inContext.getScheduler().scheduleJob(job2, trigger);   
        } catch (SchedulerException e) {   
            _log.error("出错了...");   
            e.printStackTrace();   
        }           
    }   
}  

ListenerExample.java
Quartz2个人感觉设计相当灵活,脱离了相互依赖,只需要添加监听器相关设置就行了
注意下面代码:
JobListener listener = new Job1Listener();
Matcher<JobKey> matcher = KeyMatcher.keyEquals(job.getKey());
  sched.getListenerManager().addJobListener(listener, matcher); 
这个任务1实现了监听器 joblistener,在这个 joblistener中有四个方法实现,在
public void jobWasExecuted(JobExecutionContext inContext,JobExecutionException inException) {
}
中去执行任务2的操作,以次类推的话,它可执行一个任务集合了

public void run() throws Exception {   
           
        Logger log = LoggerFactory.getLogger(ListenerExample.class);   
  
        SchedulerFactory sf = new StdSchedulerFactory();   
        Scheduler sched = sf.getScheduler();   
  
        JobDetail job = newJob(SimpleJob1.class)   
            .withIdentity("job1")   
            .build();   
           
        Trigger trigger = newTrigger()    
            .withIdentity("trigger1")   
            .startNow()   
            .build();   
  
          
        JobListener listener = new Job1Listener();   
        Matcher<JobKey> matcher = KeyMatcher.keyEquals(job.getKey());   
        sched.getListenerManager().addJobListener(listener, matcher);       
         
        sched.scheduleJob(job, trigger);         
        sched.start();   
         
        try {   
             
            Thread.sleep(30L * 1000L);              
        } catch (Exception e) {   
               
        }           
       
        sched.shutdown(true);   
        SchedulerMetaData metaData = sched.getMetaData();   
        log.error("Executed " + metaData.getNumberOfJobsExecuted() + " jobs.");   
  
    }  

SimpleJob1.java

public class SimpleJob1 implements Job {   
  
    private static Logger _log = LoggerFactory.getLogger(SimpleJob1.class);   
      
    public SimpleJob1() {   
    }   
  
    public void execute(JobExecutionContext context)   
        throws JobExecutionException {   
        JobKey jobKey = context.getJobDetail().getKey();   
        String userName = (String)context.getJobDetail().getJobDataMap().get("username");   
        _log.error("SimpleJob1 says: " + jobKey + " executing at " + new Date() + ",姓名: " + userName);   
    }   
}  

SimpleJob2.java

public class SimpleJob2 implements Job {   
  
    private static Logger _log = LoggerFactory.getLogger(SimpleJob2.class);   
  
      
    public SimpleJob2() {   
    }   
  
      
    public void execute(JobExecutionContext context)   
        throws JobExecutionException {   
         
        JobKey jobKey = context.getJobDetail().getKey();   
        String userName = (String)context.getJobDetail().getJobDataMap().getString("username");   
        String sex = (String)context.getJobDetail().getJobDataMap().getString("sex");   
        _log.error("SimpleJob1 says: " + jobKey + " executing at " + new Date() + ",英文名: " + userName+",性别: " + sex);   
    }   
  
}  

输出结果为：

[ERROR] 2011-08-12 03:56:44.750 下午 DefaultQuartzScheduler_Worker-1 [org.quartz.examples.example9.Job1Listener]   
Job1Listener says: Job Is about to be executed.   
  
[ERROR] 2011-08-12 03:56:44.765 下午 DefaultQuartzScheduler_Worker-1 [org.quartz.examples.example9.SimpleJob1]   
SimpleJob1 says: DEFAULT.job1 executing at Fri Aug 12 15:56:44 CST 2011,姓名: 天涯   
  
[ERROR] 2011-08-12 03:56:44.765 下午 DefaultQuartzScheduler_Worker-1 [org.quartz.examples.example9.Job1Listener]   
Job1Listener says: Job was executed.   
  
[ERROR] 2011-08-12 03:56:44.765 下午 DefaultQuartzScheduler_Worker-2 [org.quartz.examples.example9.SimpleJob2]   
SimpleJob1 says: DEFAULT.job2 executing at Fri Aug 12 15:56:44 CST 2011,英文名: david,性别: null  

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