服务器与客户端（2）：多线程

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服务器线程处理类

package com.sjm;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;/** * 服务器端线程处理类 * @author adminsjm * */public class ServerThread extends Thread {//和本线程相关的socketSocket socket=null;public ServerThread(Socket socket){this.socket=socket;}//执行线程操作，响应客户端的请求public void run() {InputStream is=null;InputStreamReader isr=null;BufferedReader br=null;PrintWriter pw=null;try {//获取输入流，用来读取客户端发送的登录信息is = socket.getInputStream();isr = new InputStreamReader(is);br = new BufferedReader(isr);String info=null;while((info=br.readLine())!=null){System.out.println("我是服务器，客户端说："+info);}socket.shutdownInput();//关闭输入流//获取输出流，响应客户端的请求OutputStream os=socket.getOutputStream();pw = new PrintWriter(os);pw.write("欢迎您！");pw.flush();//刷新缓存} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally{//关闭相关资源try {if(pw!=null)pw.close();if(br!=null)br.close();if(isr!=null)isr.close();if(is!=null)is.close();if(socket!=null)socket.close();} catch (IOException e) {e.printStackTrace();}}}}

服务器端

package com.sjm;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;/** * 基于tcp协议的socket通信，实现用户登录 * 服务器端 * @author adminsjm * */public class Server {public static void main(String[]args){try {//1.创建服务器端serversocker,指定要绑定的端口，并监听ServerSocket serverSocket=new ServerSocket(8888);Socket socket=null;//记录客户端的数量int cnt=0;System.out.println("***服务器即将启动，等待客户端的连接***");//循环监听等待客户端的连接while(true){//调用accept()方法开始监听，等待客户端的连接,呈阻塞状态socket=serverSocket.accept();//创建一个新的线程ServerThread serverThread=new ServerThread(socket);//启动线程serverThread.start();cnt++;System.out.println("客户端的数量为："+cnt);InetAddress address=socket.getInetAddress();System.out.println("当前客户端的IP:"+address.getHostAddress());}//serverSocket.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}

客户端

package com.sjm;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;/** * 客户端 * @author adminsjm * */public class Client {public static void main(String[]args) {try {//1.创建socket，指定服务器地址和端口Socket socket=new Socket("localhost", 8888);//2.获取输出流，用来向服务端发送输出信息OutputStream os=socket.getOutputStream();//字节输出流PrintWriter pw=new PrintWriter(os);//将输出流包装为打印流pw.write("用户名：admin;密码：123");pw.flush();socket.shutdownOutput();//获取输入流，用来读取服务器端的响应信息InputStream is=socket.getInputStream();//InputStreamReader isr=new InputStreamReader(is);//BufferedReader br=new BufferedReader(isr);BufferedReader br=new BufferedReader(new InputStreamReader(is));String info=null;while((info=br.readLine())!=null){System.out.println("我是客户端，服务端说："+info);}//4.关闭相关资源br.close();is.close();pw.close();os.close();socket.close();} catch (UnknownHostException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}

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