Java学习 之 Socket(实现简易的C/S聊天室)

1.服务器端

 

 1.1 服务器启动入口：

package com.server;

import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;

public class MainServer {
	
	public static ArrayList<Socket> socketList = new ArrayList<Socket>();
	
	public static void main(String[] args) throws IOException {
		ServerSocket serverSocket = new ServerSocket(30000);
		while (true) {
			System.out.println("等待客户端的访问... ...");
			Socket socket = serverSocket.accept();
			socketList.add(socket);
			new Thread(new ServerThread(socket)).start();
		}
	}
	
	
		
}

 

 

 

 1.2 服务器线程：

package com.server;

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

public class ServerThread implements Runnable {
	Socket socket = null;
	BufferedReader bufferedReader = null;
	
	public ServerThread(Socket socket) throws IOException {
		this.socket = socket;
		bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
	}
	
	@Override
	public void run() {
		String content = null;
		try {
			while((content = readFromClient()) != null){
				for (Socket socket:MainServer.socketList) {
					PrintStream printStream = new PrintStream(socket.getOutputStream());
					printStream.println("来自客户端："+content);
				}
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	private String readFromClient(){
		try {
			return bufferedReader.readLine();
		} catch (IOException e) {
			MainServer.socketList.remove(socket);
		}
		return null;
	}
}

 

 

 

2.客户端

 

 2.1 客户端主入口：

 

package com.client;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;

public class MainClient {
	
	public static void main(String[] args) throws UnknownHostException, IOException {
		Socket clientSocket = new Socket("127.0.0.1", 30000);
		
		PrintStream printStream = new PrintStream(clientSocket.getOutputStream());
		String line = null;
		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
		while ((line = bufferedReader.readLine()) != null) {
			printStream.println(line);
		}
	}
		
}

 

 

 

 2.2 客户端线程：

 

package com.client;

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

public class ClientThread implements Runnable {

	private Socket socket;
	BufferedReader bufferedReader = null;
	
	public ClientThread(Socket socket) throws IOException{
		this.socket = socket;
		bufferedReader = new BufferedReader(new InputStreamReader(this.socket.getInputStream()));
	}
	
	@Override
	public void run() {
		String conString = null;
		try {
			while ((conString = bufferedReader.readLine()) != null) {
				System.out.println("来自服务器的广播："+conString);
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

  

评论

1 楼 vitoliao 2016-08-11  

楼主你好，如果你的代码需要实现的是回显功能，需要在MainClient中，while函数之前加入一行代码：
new Thread(new ClientThread(clientSocket)).start();
这样才能启动客户端线程，来显示服务器的回显数据，否则将无任何打印。