Java TCP编程

Java编写TCP编程--回射信息实例

注：简单的tcp联系，还存在问题，readUTF()为阻塞型，如果之前的用户一直不输入，则一直阻塞，之后的用户再连接会出现问题。

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

 //TCPServer.java
 public class TCPServer {
     public static void main(String[] args) throws IOException {
         ServerSocket ss = new ServerSocket(6666);
         while (true) {
             Socket s = ss.accept();
             DataInputStream dis = new DataInputStream(s.getInputStream());
             System.out.println("Server:" + dis.readUTF());
             dis.close();
             s.close();
         }
     }
 }

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

 //TCPClient.java
 public class TCPClient {
     public static void main(String[] args) throws IOException {
         Socket s = new Socket("127.0.0.1", 6666);
         OutputStream os = s.getOutputStream();
         DataOutputStream dos = new DataOutputStream(os);
         dos.writeUTF("hello server");
         dos.flush();
         dos.close();
         s.close();
     }
 }