spring配置线程池

 

spring提供了线程池的支持

查看基本 Java线程池

 

先是一个线程 ThreadTransCode.java

package com.enorth.lichen.transcode;

public class ThreadTransCode implements Runnable{ 
    
  @Override
   public void run() {
    System.out.println( "转码开始.............."); 
  }
}

 

在spring配置文件中添加线程池的配置信息

< bean id ="taskExecutor"
     class ="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor" >
     < property name ="corePoolSize" value ="3" />
     < property name ="keepAliveSeconds" value ="200" />
     < property name ="maxPoolSize" value ="5" />
     < property name ="queueCapacity" value ="25" />
   </ bean >

 

在action中添加注入

< bean id ="saveVideoAction"
       class ="com.enorth.lichen.action.video.SaveVideoAction"
       scope ="prototype" >
       < property name ="videoService" >
         < ref bean ="videoService" />
       </ property >
       < property name ="groupService" >
         < ref bean ="groupService" />
       </ property >
       <property name="taskExecutor">
        <ref bean="taskExecutor" />
      </property>
     </ bean >

 

在action中调用

private TaskExecutor taskExecutor;    

public TaskExecutor getTaskExecutor() {    
         return taskExecutor;    
    }    

public void setTaskExecutor(TaskExecutor taskExecutor) {    
         this.taskExecutor = taskExecutor;    
    }    

public String execute() throws Exception {

for( int k = 0; k < 2; k++) {    
        taskExecutor.execute( new ThreadTransCode());    
    }
return SUCCESS;
}

 

以上就可以用spring实现java线程池的使用...

遗憾的是, 我在用线程池执行flv的转码线程时, 发现只有停掉tomcat才能自动执行转码的操作, 其他简单操作的多线程都是可以的. 原因不明, 难道转码的线程太耗资源?

 

 

日日日.问题解决了.原因是 死锁...实际转码的线程在tomcat停掉后就能自动运行已经说明了,我日竟然没注意...

线程池 ThreadPool.java

   public static ExecutorService exec = Executors.newFixedThreadPool(1);
    
   public static synchronized void trans(String videoPath,String targetPath){
    ThreadTransCode trans= new ThreadTransCode(videoPath,targetPath);
    exec.execute(trans);
  }

 

 

 

本文出自 “wIsper 把技术做成艺术” 博客，请务必保留此出处http://lichen.blog.51cto.com/697816/162057

来源：oschina

链接：https://my.oschina.net/u/2794/blog/264890