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JAVA socket通信


开发原理: 

   服务器,使用ServerSocket监听指定的端口,端口可以随意指定(由于1024以下的端口通常属于保留端口,在一些操作系统中不可以随意使用,所以建议使用大于1024的端口),等待客户连接请求,客户连接后,会话产生;在完成会话后,关闭连接。 

   客户端,使用Socket对网络上某一个服务器的某一个端口发出连接请求,一旦连接成功,打开会话;会话完成后,关闭Socket。客户端不需要指定打开的端口,通常临时的、动态的分配一个1024以上的端口。 


package com.umesage.stop;


import java.net.*;
import java.io.*;


public class Server {
private ServerSocket ss;
private Socket socket;
private BufferedReader in;
private PrintWriter out;


public Server() {
try {
ss = new ServerSocket(10000);


while (true) {
socket = ss.accept();
in = new BufferedReader(new InputStreamReader(socket
.getInputStream()));
out = new PrintWriter(socket.getOutputStream(), true);


String line = in.readLine();
System.out.println("you input is :" + line);
out.println("you input is :" + line);
out.close();
in.close();
socket.close();
ss.close();
}

} catch (IOException e) {

}

}


public static void main(String[] args) {
new Server();
}
}


package com.umesage.stop;



import java.io.*;

import java.net.*;



public class Client {

Socket socket;

BufferedReader in;

PrintWriter out;



public Client() {

try {

socket = new Socket("127.0.0.1", 10000);

// in = new BufferedReader(new InputStreamReader(socket

// .getInputStream()));

out = new PrintWriter(socket.getOutputStream(), true);





out.println("Please Stop!");



out.close();

// in.close();

socket.close();

} catch (IOException e) {

}

}



public static void main(String[] args) {

new Client();

}

}

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