利用Piped实现线程间通讯

最新推荐文章于 2025-02-12 15:13:05 发布

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本文通过一个Java示例展示了如何使用PipedInputStream和PipedOutputStream实现两个线程之间的数据传递。发送线程不断输出数据，接收线程读取并打印接收到的数据。

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发送程序　：

　　　package com.thread;

import java.io.IOException;
import java.io.PipedOutputStream;

public class Thread1 extends Thread {

/**
* @param args
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  new Thread1(new PipedOutputStream()).start();
}

PipedOutputStream pipeout;
public Thread1(PipedOutputStream pipeout)
{
  this.pipeout=pipeout;
}
public void run()
{
  while (true)
  {
   try {
    System.out.println(" THis is thread1");
    pipeout.write("ABCDEFGHIJKLMNOPQRSTUVWXYZ.".getBytes());
    pipeout.flush();
    System.out.println("发生数据");
    //pipeout.close();
    Thread.sleep(1000);
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  //pipeout.close();
}

}
　接收线程：

package com.thread;

import java.io.IOException;
import java.io.PipedInputStream;

public class Thread2 implements Runnable {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
new Thread(new Thread2(new PipedInputStream())).start();

}

PipedInputStream pipein;
Thread2(PipedInputStream pipein)
{
  this.pipein=pipein;

}

@Override
public void run() {
  // TODO Auto-generated method stub
  while (true)
  {
   try {
    System.out.println(" THis is thread2");
    byte[] bytes = new byte[10];
    int length = pipein.read(bytes);
    System.out.println("接收："+new String(bytes,0,length));

    //Thread.sleep(10000);

    Thread.sleep(0);
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
}

}
//主程序

package com.thread;

import java.io.IOException;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;

public class Multi_Thread {

/**
* @param args
*/
public static void main(String[] args) {




  try {
   PipedOutputStream pipeout= new PipedOutputStream();
   //方式一
   //PipedInputStream pipein= new PipedInputStream(pipeout);
   //方式二
   PipedInputStream pipein= new PipedInputStream();
   //方式二１
   //pipeout.connect(pipein);
   //方式二２
   pipein.connect(pipeout);

   // TODO Auto-generated method stub
   Thread1 threadone=new Thread1( pipeout);
         //用Runnable接口类的对象创建线程；
   Thread threadtwo=new Thread(new Thread2( pipein));
   threadone.start();
   threadtwo.start();//strat()方法启动线程；


  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

}

}