java Socket简单聊天实现

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使用Java的Socket实现客户端和服务器端之间的连接，实现客户端重复发送数据到服务器端的功能。即，用户可以在控制台不断输入内容，并将内容逐一发送给服务端。并在服务端显示。

使用到的知识：Socket, Input/OutputStream, Scanner, try...catch, Class

客户端实现：

package TCPUDP;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.PrintWriter;import java.net.Socket;import java.util.Scanner;public class Client {private Socket socket;public Client(){try {socket = new Socket("localhost", 8088);} catch (Exception e) {e.printStackTrace();}}public void start(){try{OutputStream out = socket.getOutputStream();//OutputStreamWriter osw = new OutputStreamWriter(out, true);OutputStreamWriter osw = new OutputStreamWriter(out, "UTF-8");PrintWriter pw = new PrintWriter(osw, true);//pw.println("你好！服务器！");//创建Scanner读取用户输入内容Scanner scanner = new Scanner(System.in);while(true){//scan.nextLine();pw.println(scanner.nextLine());}}catch(Exception e){e.printStackTrace();}finally{if(socket != null){try{socket.close();}catch(Exception e){e.printStackTrace();}}}}public static void main(String[] args) {// TODO Auto-generated method stubClient client = new Client();client.start();}}

服务器端实现：

package TCPUDP;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.ServerSocket;import java.net.Socket;public class Server {private ServerSocket serverSocket;public Server(){try{serverSocket = new ServerSocket(8088);}catch(Exception e){e.printStackTrace();}}public void start(){try{System.out.println("等待客户端连接。。。");//方法会产生阻塞，直到某个Socket连接，返回请求连接的SocketSocket socket = serverSocket.accept();System.out.println("客户端已连接！");InputStream in = socket.getInputStream();InputStreamReader isr = new InputStreamReader(in, "UTF-8");BufferedReader br = new BufferedReader(isr);//System.out.println("客户端说：" + br.readLine());//不断读取客户端数据while(true){System.out.println("客户端说：" + br.readLine());}}catch(Exception e){e.printStackTrace();}}public static void main(String[] args) {// TODO Auto-generated method stubServer server = new Server();server.start();}}

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