学会使用 Socket,学习服务器和客户端之间的通讯

1.写一个可以提供回答问题的服务平台的软件
以一问一回的方法完成

实现代码：

//服务器端
package com.zhangyufan.net;

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.net.UnknownHostException;
import java.util.Scanner;

public class AnswerServer {

	public static void main(String[] args) throws UnknownHostException, IOException {
		ServerSocket ss = new ServerSocket(10000);
		while (true) {
			Socket s = ss.accept();
			InputStreamReader isr = new InputStreamReader(s.getInputStream());
			BufferedReader br = new BufferedReader(isr);
			String request = br.readLine();
			System.out.println("接收到了客户端的问题:" + request);
			PrintWriter pw = new PrintWriter(s.getOutputStream());
			System.out.println("请输入对该问题的回答:");
			Scanner sc = new Scanner(System.in);
			String info = sc.next();
			pw.println(info);
			pw.close();
		}

	}

}

//客户端
package com.zhangyufan.net;

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 AskClient {

	public static void main(String[] args) throws UnknownHostException, IOException {
		Socket s = new Socket("192.168.0.104", 10000);
		PrintWriter pw = new PrintWriter(s.getOutputStream());
		System.out.println("连接已建立....................");
		System.out.println("请输入您想要问的问题:");
		Scanner sc = new Scanner(System.in);
		String info = sc.next();
		pw.println(info);
		pw.flush();
		InputStreamReader isr = new InputStreamReader(s.getInputStream());
		BufferedReader br = new BufferedReader(isr);
		String advice = br.readLine();
		System.out.println("接收到服务器的回答:" + advice);
		br.close();

	}

}

运行结果：
这里要先说明一下，运行的时候要先运行服务器端，运行起来之后再去运行客户端，然后就会提问了，就可以跟着回答了。以下三张图是我运行起来之后按照顺序依次显示的内容。