java socket编程——TCP通信

Client.java:

 

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.Socket;

import java.net.UnknownHostException;

import java.util.Scanner;

 

public class Client {

 

public Client() {

 

try {

 

Socket st = new Socket("192.168.1.131", 9090);

 

// 得到服务端的输入流

BufferedReader br = new BufferedReader(new InputStreamReader(st

.getInputStream()));

// 得到服务端的输出流

PrintWriter pw = new PrintWriter(st.getOutputStream(), true);

boolean t = true;

while (t) {

// 发送消息给服务器端

System.out.print("我：");

pw.println(new Scanner(System.in).nextLine());

pw.flush();

 

// 读取服务器端发送来的消息

String content = br.readLine();

System.out.println("剑哥：" + content);

}

br.close();

pw.close();

st.close();

} catch (UnknownHostException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

 

}

 

public static void main(String[] args) {

new Client();

}

}

---

Server.java:

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

import java.net.ServerSocket;

import java.net.Socket;

import java.util.Scanner;

public class Server {

public Server() {

try {

System.out.println("服务器已经启动，正在等待请求....");

ServerSocket server = new ServerSocket(9090);

Socket st = server.accept();// 监听客户端的请求

// 得到客户端的输入流

BufferedReader br = new BufferedReader(new InputStreamReader(st

.getInputStream()));

// 得到客户端的输出流

PrintWriter pw = new PrintWriter(st.getOutputStream(), true);

boolean t = true;

while (t) {

// 读入客户端发送过来的消息

String content = br.readLine();

if (content.length() > 0)

System.out.println("客户端说：" + content);

System.out.print("服务器：");

pw.println(new Scanner(System.in).nextLine());

pw.flush();

}

br.close();

pw.close();

st.close();

server.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

public static void main(String[] args) {

new Server();

}

}