JAVA中的TCP通信（多线程）

首先是client端的代码

package com.baidu.demo1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;
import java.net.UnknownHostException;

public class Test2 {
       public static void main(String []args){
    	   try {
			Socket socket=new Socket("localhost",8888);
			OutputStream os=socket.getOutputStream();
			PrintWriter pw=new PrintWriter(os);
			pw.write("用户名：zhizhangxi;密码：111");
			pw.flush();//将数据提交
			socket.shutdownOutput();
			
			InputStream is=socket.getInputStream();
			BufferedReader br=new BufferedReader(new InputStreamReader(is));//加入缓冲，提高读取速度
			String str=null;
			while((str=br.readLine())!=null){
				System.out.println(str);
				//str=br.readLine();
			}
			
			//pw.flush();
			socket.shutdownInput();
			pw.close();
			os.close();
			socket.close();
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
    	   
       }
}

server端的代码

package com.baidu.demo1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

public class Test1 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			ServerSocket serverSocket=new ServerSocket(8888);
			System.out.println("服务器开始运行！");
			int count=0;
			while(true){
				Socket socket=serverSocket.accept();
				ServerThread serverThread=new ServerThread(socket);
				serverThread.start();
				count++;
				System.out.println("客户端的数量为： "+count);
				InetAddress address=socket.getInetAddress();
				System.out.println("客户端的ip地址： "+address.getHostAddress());
			}//反复监听客户端的请求，如果有请求的话，那么就创建一个线程。
			
			//serverSocket.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

}

线程的代码

package com.baidu.demo1;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;

public class ServerThread extends Thread {
	Socket socket=null;
	public ServerThread(Socket socket){
		this.socket=socket;
	}
	public void run(){
		InputStream is=null;
		InputStreamReader isr=null;
		BufferedReader br=null;
		OutputStream os=null;
		PrintWriter pr=null;
		try {
			is = socket.getInputStream();//获得字节流
			isr = new InputStreamReader(is);//将字节流转化为字符流
			br = new BufferedReader(isr);
			String str=null;
			while((str=br.readLine())!=null){
				System.out.println("我是服务器，客户端说 "+str);
				
			}
			socket.shutdownInput();
			os = socket.getOutputStream();
			pr = new PrintWriter(os);
			pr.write("欢迎您！");//写入操作
			pr.flush();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			//socket.shutdownOutput();
			if(pr!=null)
				pr.close();
			try {
				if(os!=null)
					os.close();
				if(br!=null)
					br.close();
				if(isr!=null)
					isr.close();
				if(is!=null)
					is.close();
				if(socket!=null)
					socket.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
		
		
	}
	
}

此代码参考学习慕课网的java Socket网络教程而写。