package com.test;
/*
 * server类
 */
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

	public static void main(String[] args) {
		try {
			//创建ServerSocket对象
			ServerSocket server=new ServerSocket(8888);
			System.out.println("服务器等待连接中.....");
			//调用accept()开始监听，等待客户端的连接
			Socket s=server.accept();
			//获得输入流，来读取客户信息
			InputStream in=s.getInputStream();//字节输入流
			InputStreamReader isr=new InputStreamReader(in);//将字节流包装为字符流
			BufferedReader br=new BufferedReader(isr);//为输入流添加缓冲
			String info=null;
			while((info=br.readLine())!=null){
				System.out.println("******服务器开始读取*****");
				System.out.println("我是服务器，客户端说："+info);
				info=br.readLine();
			}
			//添加输出流，为客户端输出信息
			OutputStream out=s.getOutputStream();
			BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(out));
			bw.write("欢迎您！！！");
			bw.flush();
			//关闭资源
			out.close();
			bw.close();
			server.close();
			in.close();
			isr.close();
			br.close();
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

package com.test;
/*
 * client类
 */
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 Client {

	public static void main(String[] args) {
		try {
			//创建Socket对象
			Socket socket=new Socket("localhost", 8888);
			//获取输出流 
			OutputStream out=socket.getOutputStream();
			PrintWriter pw=new PrintWriter(out);
			pw.write("ueser:tom;key:123");
			pw.flush();
			//添加输出流
			InputStream in=socket.getInputStream();
			BufferedReader br=new BufferedReader(new InputStreamReader(in));
			String info=null;
			while((info=br.readLine())!=null){
			System.out.println("我是客户端，服务器端说："+info);
			}
			//关闭资源
			in.close();
			br.close();
			socket.close();
			out.close();
			pw.close();
		} catch (UnknownHostException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		

	}

}

client控制台就显示：服务器等待连接中.....

server控制台没反应