接收套接字數據java

Question

為什么它不從服務器和從客戶端到服務器接收數據？ 我的方法“odbierz”不好？ 我想將數據從服務器發送到客戶端，然后客戶端在更改時將數據發送到服務器。

客戶類

public class Klient {

    private Socket sock;
   private PrintWriter out;
   private BufferedReader in;



 public Klient() throws UnknownHostException, IOException
 {
      sock=new Socket("localhost",50007);                                                      
      System.out.println("Nawiazalem polaczenie: "+sock);  
      in=new BufferedReader(new InputStreamReader(sock.getInputStream()));
      out=new PrintWriter(sock.getOutputStream(), true); 
 }
 public void wyslijDane(int numerKart) throws IOException
 {
        System.out.print("<Wysylamy:> ");                                                

          out.print(numerKart);
          out.flush();
          System.out.println("Wyslano kartę" + numerKart);
 }

 public void odbierz() throws IOException
 {
          String str;

             if(in.ready())
             {
                 while(true)
                 {
            str=in.readLine();  
            System.out.println("<Nadeszlo:> " + str);
                 }
             }
             else 
                 System.out.println("Zajetre");

 }
   public static void main(String[] args) throws IOException                            
   {                                                                                   

  } 
}

public class Server
{
    public static final int PORT=50007;
    private ServerSocket server;
    private Socket sock;
    private PrintWriter out;
    private BufferedReader in;


public  Server() throws IOException
{

  server=new ServerSocket(PORT); 
  System.out.println("Nasluchuje: "+ server);  
  sock=server.accept(); 
  System.out.println("Jest polaczenie: "+sock);   
   in=new BufferedReader(new InputStreamReader(sock.getInputStream()));
  out=new PrintWriter(sock.getOutputStream(), true);                                        


 public void wyslijDane(int numerKarty ) throws IOException
 {
       System.out.print("<Wysylamy:>   ");                                                
         out.print(numerKarty);
         out.flush();
         System.out.println("Wyslano kartę" + numerKarty);
   }

   }

Answer 1

我不知道您如何以及在何處調用odbierz()方法，但是while(true)是一個無限循環，這可能就是您的程序無法運行的原因。

嘗試刪除循環：

public void odbierz() throws IOException {
      String str;

       if(in.ready()) {
           str=in.readLine();  
           System.out.println("<Nadeszlo:> " + str);
       } else { 
           System.out.println("Zajetre");
       }
}