java客户端服务端通信

以下是Java编写的局域网实时通信客户端和服务端的通信方法：

客户端：
1. 导入Socket和IO相关的包

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

2. 创建Socket对象，指定服务器地址和端口号

Socket socket = new Socket("localhost",9999);

3. 获取输入输出流，进行数据传输

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

4. 发送数据

out.println("Hello Server");

5. 接收数据

String response = in.readLine();
System.out.println("Server response: " + response);

6. 关闭连接

in.close();
out.close();
socket.close();

服务端：
1. 导入Socket和IO相关的包

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

2. 创建ServerSocket对象，指定端口号

ServerSocket serverSocket = new ServerSocket(9999);

3. 监听客户端连接，获取Socket对象

Socket socket = serverSocket.accept();

4. 获取输入输出流，进行数据传输

BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter out = new PrintWriter(socket.getOutputStream(), true);

5. 接收数据

String request = in.readLine();
System.out.println("Client request: " + request);

6. 发送数据

out.println("Hello Client");

7. 关闭连接

in.close();
out.close();
socket.close();
serverSocket.close();