Java通信编程之Socket入门

Java通信编程之Socket入门

1. /**
2.  * @(#)ClientTest.java
3.  *
4.  * 客户端
5.  * @author 
6.  * @version 1.00 2008/8/2
7.  */
8. import java.net.Socket;
9. import java.io.IOException;
10. import java.io.InputStreamReader;
11. import java.io.BufferedReader;
12. import java.io.PrintWriter;
14. public class ClientTest {
16.     private Socket socket;
17.     BufferedReader in;
18.     PrintWriter out;
19.     
20.     public ClientTest() {
21.         try{
22.             System.out.println("Try to connect to 127.0.0.1:10000");
23.             //向服务器发出连接请求
24.             socket=new Socket("127.0.0.1",10000);
25.             System.out.println("The Server Connected!");   
26.             
27.             System.out.println("Please enter some characters:");
28.             //读取用户输入信息
29.             BufferedReader line=new BufferedReader(new InputStreamReader(System.in));
30.             
31.             //输出从服务器端获得的信息
32.             out=new PrintWriter(socket.getOutputStream(),true);
33.             out.println(line.readLine());
34.             
35.             //读取服务器端信息
36.             in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
37.             System.out.println(in.readLine());
38.             
39.             out.close();
40.             in.close();
41.             socket.close();    
42.         }catch(IOException ex){
43.             System.out.println(ex.getMessage());
44.         }
45.     }
46.     
47.     public static void main(String[] args){
48.         new ClientTest();
49.     }
50.     
51. }

1. /**
2.  * @(#)ServerSocketTest.java
3.  *
4.  * 服务器端
5.  * @author 
6.  * @version 1.00 2008/8/2
7.  */
9. import java.net.ServerSocket;
10. import java.net.Socket;
11. import java.io.IOException;
12. import java.io.BufferedReader;
13. import java.io.InputStreamReader;
14. import java.io.PrintWriter;
16. public class ServerSocketTest {
18.     private ServerSocket ss;
19.     private Socket socket;
20.     private BufferedReader in;
21.     private PrintWriter out;
22.     public ServerSocketTest() {
23.         try{
24.             ss=new ServerSocket(10000);//建立服务器，监听...
25.             System.out.println("Server is listening at 10000...");
26.             while(true){
27.                 socket=ss.accept();
28.                 //获取客户端IP地址
29.                 String remoteIP=socket.getInetAddress().getHostAddress();
30.                 //获取客户端连接端口
31.                 String remotePort=":"+socket.getLocalPort();
32.                 System.out.println("A clinet come in!IP:"+remoteIP+remotePort);
33.                 
34.                 //读取客户端输入
35.                 in=new BufferedReader(new InputStreamReader(socket.getInputStream()));
36.                 String line=in.readLine();
37.                 System.out.println("Client send is:"+line);
38.                 
39.                 //将服务器端信息发往客户端
40.                 out=new PrintWriter(socket.getOutputStream(),true);
41.                 out.println("Your Message Received!");
42.                 
43.                 out.close();
44.                 in.close();
45.                 socket.close();
46.             }
47.         }catch(IOException ex){
48.             System.out.println(ex.getCause());
49.         }
50.     }
51.     
52.     public static void main (String[] args) {
53.         new ServerSocketTest();
54.     }  
55. }