Java Socket网络编程

Posted 2020-10-05 明耀

服务器端：

 1 import java.net.*;
 2 import java.io.*;
 3 public class SocketServer extends Thread {
 4     private ServerSocket serverSocket;
 5     public SocketServer(int port) throws IOException
 6     {
 7         serverSocket=new ServerSocket(port);
 8         //等待客户连接的时间不超过6秒
 9         serverSocket.setSoTimeout(100000);
10     }
11     public void run()
12     {
13         while(true)
14         {
15             try
16             {
17                 System.out.println("等待远程连接，端口号为："+serverSocket.getLocalPort());
18                 Socket server =serverSocket.accept();
19                 System.out.println("远程主机地址"+server.getRemoteSocketAddress());
20                 //从客户端读数据
21                 DataInputStream in=new DataInputStream(server.getInputStream());
22                 System.out.println(in.readUTF());
23                 //往客户端发送数据
24                 DataOutputStream out=new DataOutputStream(server.getOutputStream());
25                 out.writeUTF("谢谢连接我："+server.getLocalSocketAddress()+"\nGoodbye!");
26                 server.close();
27             }
28             catch(SocketException s)
29             {
30                 System.out.println("Socket timed out");
31                 break;
32             }
33             catch(IOException e)
34             {
35                 e.printStackTrace();
36                 break;
37             }
38         }
39     }
40     public static void main(String[] args)
41     {
42         int port=6066;
43         try
44         {
45             Thread t=new SocketServer(port);
46             t.run();
47         }
48         catch(IOException e)
49         {
50             e.printStackTrace();
51         }
52     }
53 }

客户端：

 1 import java.net.*;
 2 import java.io.*;
 3 public class SocketClient {
 4     public static void main(String[] args)
 5     {
 6         //服务器地址
 7         String serverName="localhost";
 8         //服务器端口号
 9         int port=6066;
10         try
11         {
12             System.out.println("连接到主机："+serverName+",端口号："+port);
13             Socket client=new Socket(serverName,port);
14             System.out.println("远程主机地址："+client.getRemoteSocketAddress());
15             //向服务器传送消息
16             OutputStream outToServer=client.getOutputStream();
17             DataOutputStream out=new DataOutputStream(outToServer);
18             out.writeUTF("Hello from"+client.getLocalSocketAddress());
19             
20             //获取服务器返回的信息
21             InputStream inFromServer=client.getInputStream(); 
22             DataInputStream in=new DataInputStream(inFromServer);
23             System.out.println("服务器响应："+in.readUTF());
24             client.close();
25         }
26         catch(IOException e)
27         {
28             e.printStackTrace();
29         }
30     }
31 
32 }