上机题目（0基础）- Java网络操作-Socket实现client和server端通信二（Java）

上一节实现了client像server端发送请求。本节将实现server端向client回传信息。实现原理非常easy，在原来的基础上。在server端实现输出流，在client实现输入流就可以，详细代码例如以下：

server端：

package com.socket.demo;
 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;
 
public class Server {
	public static void main(String[] args) {
		try{
			ServerSocket serverSocket=new ServerSocket(8888);
			System.out.println("----------------服务端执行。開始监听请求----------------");
			Socket socket=serverSocket.accept();//開始监听
			InputStream inputStream=socket.getInputStream();
			BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream));
			//获取请求内容
			String info;
			while ((info=bufferedReader.readLine())!=null) {
				System.out.println("我是server端。client请求为："+info);
 
			}
 
			socket.shutdownInput();
			//server端向client回传信息
			OutputStream outputStream=socket.getOutputStream();
			PrintWriter printWriter=new PrintWriter(outputStream);
			printWriter.write("client您好。我已经接受到你的信息");
			printWriter.flush();
			//关闭资源
			printWriter.close();
			outputStream.close();
			bufferedReader.close();
			inputStream.close();
			socket.close();
			serverSocket.close();
			}catch(Exception exception){
 
			}
 
	}
 
}

client：

package com.socket.demo;
 
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 {
			//发送到8888端口
			Socket socket=new Socket("127.0.0.1", 8888);
			//输出流
			OutputStream outputStream=socket.getOutputStream();
			PrintWriter printWriter=new PrintWriter(outputStream);
			printWriter.write("server端你好，我是client。
 
");
			printWriter.flush();
			socket.shutdownOutput();//这个不能少。！
 
！
 
！
 
！！！。！！。！
 
！
 
！
			//接受server端回传的信息
			InputStream inputStream=socket.getInputStream();
			BufferedReader bufferedReader=new BufferedReader(new InputStreamReader(inputStream));
			String info;
			while ((info=bufferedReader.readLine())!=null) {
				System.out.println("我是client。server端返回：："+info);
 
			}
			//关闭资源
			bufferedReader.close();
			inputStream.close();
			printWriter.close();
			outputStream.close();
			socket.close();
		} catch (UnknownHostException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
 
}

执行实比例如以下：

server控制台输出：

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posted on
2017-07-27 19:30 
cynchanpin 
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