ExecutorService启动线程

1,Java5版本以后,使用ExecutorService启动线程,比之前的版本中的Thread的start()更好

2,创建ExecutorService

ExecutorService es = Executors.newCachedThreadPool();

3,ExecutorService执行任务

任务类型:
实现Runnable接口的类 (无返回值)
实现Callable接口的类   (有返回值)
 
3-1, 执行(Runnable)任务
(1),无返回值: <T> Future<T> submit(Runnable task)
    es.submit(new Thread(){
	  public void run(){
		//实现部分
	  }
       });

(2),有返回值: <T> Future<T> submit(Runnable task, T result)

    String result = "END";
       Future<String> rs = es.submit(new Thread(){
			public void run(){
				//实现部分
			}
	}, result);
		
	String end = "";
	try {
		end = rs.get();    //获取执行结果
	} catch (InterruptedException e) {  
            e.printStackTrace();  
        } catch (ExecutionException e) {  
            e.printStackTrace();  
        }  
		
	System.out.println(end);  // 执行结果: END

3-2,执行(Callable)任务

(1)有返回值 :  <T> Future<T> submit(Callable<T> task)

    String mobile = "13050230361";
      Map<String, String> map = new HashMap<String, String>();
      Future<String> rs = es.submit(new TaskThread(mobile, map));
		
      String end = "";
      try {
	  end = rs.get();   //获取执行结果
    } catch (InterruptedException e) {  
            e.printStackTrace();  
      } catch (ExecutionException e) {  
            e.printStackTrace();  
      } 
		
      System.out.println(end);   //  执行结果: OK

任务实现类:

     class TaskThread implements Callable<String>{
	private String mobile;
	private Map<String, String> map;
	
	public TaskThread(String mobile, Map<String, String> map) {
		super();
		this.mobile = mobile;
		this.map = map;
	}

	@Override
	public String call() throws Exception {
		if(mobile == null){
			return null;
		}
		return "OK";
	}
        }

  

4,用例:发送短信

  

 
 
posted @ 2017-03-07 10:59  wanhua.wu  阅读(244)  评论(0编辑  收藏  举报