spring线程池管理

    <bean id = "task" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
        
        <property name="corePoolSize" value="2">property>
        
        <property name="keepAliveSeconds" value="200">property>
        
        <property name="maxPoolSize" value="5">property>//配置为5，实际最大线程为maxPoolSize+1=6
        
        <property name="queueCapacity" value="1">property>
        
        <property name="rejectedExecutionHandler">
             <bean class="java.util.concurrent.ThreadPoolExecutor$CallerRunsPolicy" />
        property>
    bean>

如下测试

@Controller
@RequestMapping("/")
public class index {
    @Autowired
    private TaskExecutor task;  //如上在spring配置文件中配置该线程池信息,名字要与配置文件中bean的id一样
    @RequestMapping(value = "/tx1", method = RequestMethod.GET)
    @ResponseBody
    public String tx1(){
        int i =0;
        while(i < 8){
            i++;
            task.execute(new Thread(){
                public void run() {
                    System.out.println("===="+index.this.hashCode()+"====="+Thread.currentThread().hashCode());
                    int a = 0;
                    while(a < 3){
                    try {
                        Thread.sleep(1000);
                        a++;
                        System.out.println(Thread.currentThread().hashCode()+":"+a);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }   
                    }
                    System.out.println(name+"==========结束==========");
                };
            });
        }       
        return "index";
    }
}

测试结果如下：同时进行的线程最大为6个线程，其它任务需要等线程处理完再进行

====261098527=====1258663477
====261098527=====2001246553
====261098527=====901774565
====261098527=====1542691695
====261098527=====1657056902
====261098527=====2038668338
1258663477:1
2038668338:1
1657056902:1
1542691695:1
901774565:1
2001246553:1
1258663477:2
2038668338:2
1657056902:2
1542691695:2
901774565:2
2001246553:2
1258663477:3
0==========结束==========
====261098527=====1258663477
2038668338:3
0==========结束==========
====261098527=====2038668338
1657056902:3
0==========结束==========
1542691695:3
0==========结束==========
901774565:3
0==========结束==========
2001246553:3
0==========结束==========
2038668338:1
1258663477:1
2038668338:2
1258663477:2
2038668338:3
0==========结束==========
1258663477:3
0==========结束==========