調試套接字通信程序

Question

我有2個類（Client和Server）用於在我的應用程序中實現簡單通信。我的代碼如下所示：

服務器：

public class Server { 
    public static void main(String[] ar) { 
     int port = 1025; // just a random port. make sure you enter something between 1025 and 65535. 
     try { 
      ServerSocket ss = new ServerSocket(port); // create a server socket and bind it to the above port number. 
      System.out.println("Waiting for a client..."); 
      Socket socket = ss.accept(); 
      InputStream sin = socket.getInputStream(); 
      OutputStream sout = socket.getOutputStream(); 
      DataInputStream in = new DataInputStream(sin); 
      DataOutputStream out = new DataOutputStream(sout); 
      BufferedReader keyboard = new BufferedReader(new InputStreamReader(
        System.in)); 
      System.out.println("enter meter id "); 
      String line = null; 

      while (true) { 
       line = in.readUTF(); // wait for the client to send a line of text. 
       System.out.println("client send me this id number " + line); 
       line = keyboard.readLine(); 
       out.writeUTF(line); 
       out.flush(); 
       //line = in.readUTF(); 
       System.out.println("Waiting for the next line..."); 
       System.out.println(); 
      } 
     } catch (Exception x) { 
      x.printStackTrace(); 
     } 
    } 
} 

客戶：

public class Client { 
    public static void main(String[] ar) { 
     int serverPort = 1025; 
     String address = "localhost"; 
     try { 
      InetAddress ipAddress = InetAddress.getByName(address); // create an object that represents the above IP address. 
      System.out.println(" IP address " + address + " and port " 
        + serverPort); 
      Socket socket = new Socket(ipAddress, serverPort); // create a socket with the server's IP address and server's port. 
      InputStream sin = socket.getInputStream(); 
      OutputStream sout = socket.getOutputStream(); 
      DataInputStream in = new DataInputStream(sin); 
      DataOutputStream out = new DataOutputStream(sout); 
      // Create a stream to read from the keyboard. 
      BufferedReader keyboard = new BufferedReader(new InputStreamReader(
        System.in)); 
      String line = null; 
      System.out.println("ClientConnected."); 
      System.out.println("enter meter id"); 

      while (true) { 
       line = keyboard.readLine(); // wait for the user to type in something and press enter. 
       System.out.println("Sending this number to the server..."); 
       out.writeUTF(line); // send the above line to the server. 
       out.flush(); // flush the stream to ensure that the data reaches the other end. 
       line = in.readUTF(); // wait for the server to send a line of text. 
       System.out 
         .println("The server was very polite. It sent me this : " 
           + line); 
       System.out.println(); 
      } 
     } 
     catch (Exception x) { 
      x.printStackTrace(); 
     } 
    } 
} 

我的問題是，雖然測試程序我得到的之間的通信客戶端和服務器，但在調試時，在上有一個斷點10行Server.java，它沒有去預定的目的地。該預定目的地是line = in.readUTF();的Client.java。任何人都可以幫我解決這個問題嗎？

Answer 1

這是很好的做法，打開OutputStream小號之前的InputStream S，你的插座，在此question說。

這個question也闡明瞭這一點。

Answer 2

我在這裏懷疑您的客戶端和服務器是在兩個不同的JVM進程中運行，並且java調試器無法同時調試兩個JVM。