import java.net.*;
import java.io.*;
public class ServerSocketDemo 
{
	//聲明ServerSocket類對(duì)象
    ServerSocket serverSocket;
    
    //聲明并初始化服務(wù)器端監(jiān)聽(tīng)端口號(hào)常量
    public static final int PORT = 10745;
    
    //聲明服務(wù)器端數(shù)據(jù)輸入輸出流
    DataInputStream in;
    DataOutputStream out;
    
    //聲明InetAddress類對(duì)象ip，用于獲取服務(wù)器地址及端口號(hào)等信息
    InetAddress ip = null; 
    
    //聲明字符串?dāng)?shù)組對(duì)象request，用于存儲(chǔ)從客戶端發(fā)送來(lái)的信息
    String request[];
    
	public ServerSocketDemo()
	{
		request = new String[3]; //初始化字符串?dāng)?shù)組
        try
        {
        	//獲取本地服務(wù)器地址信息
    		ip = InetAddress.getLocalHost();
    		
    		//以PORT為服務(wù)端口號(hào)，創(chuàng)建serverSocket對(duì)象以監(jiān)聽(tīng)該端口上的連接
            serverSocket = new ServerSocket(PORT);
            
            //創(chuàng)建Socket類的對(duì)象socket，用于保存連接到服務(wù)器的客戶端socket對(duì)象
            Socket socket = serverSocket.accept();
            System.out.println("This is server:"+String.valueOf(ip)+PORT);
            
            //創(chuàng)建服務(wù)器端數(shù)據(jù)輸入輸出流，用于對(duì)客戶端接收或發(fā)送數(shù)據(jù)
            in = new DataInputStream(socket.getInputStream());
            out = new DataOutputStream(socket.getOutputStream());
            
            //接收客戶端發(fā)送來(lái)的數(shù)據(jù)信息，并顯示
            request[0] = in.readUTF();
            request[1] = in.readUTF();
            request[2] = in.readUTF();
            System.out.println("Received messages form client is:");
            System.out.println(request[0]);
            System.out.println(request[1]);
            System.out.println(request[2]);
            
            //向客戶端發(fā)送數(shù)據(jù)
            out.writeUTF("Hello client!");
            out.writeUTF("Your ip is:"+request[1]);
            out.writeUTF("Your port is:"+request[2]);
        }
        catch(IOException e){e.printStackTrace();}
	}
	public static void main(String[] args) 
	{
		ServerSocketDemo demo = new ServerSocketDemo();
	}
}