socket实例1

第一个例子创建了一个java工程，用来测试Socket的连接功能，通过浏览器可访问,地址为:127.0.0.1:端口号

 MyServerSocket.java，

package com.jikexueyuan.testmysetversocket.main;


public class MyServerSocket {

    public static void main(String[] args) {
        new ServerListener().start();
        
    }

}

ServerListener.java

package com.jikexueyuan.testmysetversocket.main;

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

import javax.swing.JOptionPane;

public class ServerListener extends Thread {

    @Override
    public void run() {
        //1-65535
        try {
            ServerSocket serverSocket = new ServerSocket(12345);
            while (true) {
                //block
                Socket socket = serverSocket.accept();
                //建立连接
                JOptionPane.showMessageDialog(null, "有客户端链接到了本机的12345端口");
                //将socket传递给新的线程
                ChatSocket cs = new ChatSocket(socket);
                cs.start();
                ChatManager.getChatManager().add(cs);
            }
            
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

ChatSocket.java

package com.jikexueyuan.testmysetversocket.main;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.Socket;

public class ChatSocket extends Thread {
    
    Socket socket;
    
    public ChatSocket(Socket s){
        this.socket = s;
    }
    
    public void out(String out) {
        try {
            socket.getOutputStream().write((out+"
").getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("断开了一个客户端链接");
            ChatManager.getChatManager().remove(this);
            e.printStackTrace();
        }
    }

    @Override
    public void run() {
        out("你已经连接到本服务器了");
        try {
            BufferedReader br = new BufferedReader(
                    new InputStreamReader(
                            socket.getInputStream(),"UTF-8"));
            String line = null;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
                ChatManager.getChatManager().publish(this, line);
            }
            br.close();
            System.out.println("断开了一个客户端链接");
            ChatManager.getChatManager().remove(this);
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            System.out.println("断开了一个客户端链接");
            ChatManager.getChatManager().remove(this);
            e.printStackTrace();
        }
        
    }
}

ChatManager.java

package com.jikexueyuan.testmysetversocket.main;

import java.util.Vector;

public class ChatManager {

    private ChatManager(){}
    private static final ChatManager cm = new ChatManager();
    public static ChatManager getChatManager() {
        return cm;
    }
    
    Vector<ChatSocket> vector = new Vector<ChatSocket>();
    
    public void add(ChatSocket cs) {
        vector.add(cs);
    }
    
    public void remove(ChatSocket cs) {
        vector.remove(cs);
    }
    
    public void publish(ChatSocket cs,String out) {
        for (int i = 0; i < vector.size(); i++) {
            ChatSocket csChatSocket = vector.get(i);
            if (!cs.equals(csChatSocket)) {
                csChatSocket.out(out);
            }
        }
    }
}

打开浏览器后，访问地址得到：