直到服務器停止後GUI纔會啓動

Question

我無法啓動我的GUI。它連接到我的ClientController。在啓動我的服務器之後，我也啓動了ClientController，之後，我的GUI應該與它一起運行。但是直到我停止服務器才顯示出來，然後終於出現。

public class ClientController { 
    private HashMap<String, ArrayList<String>> drinkar = null;//Controller 
    private ServerHandler serverH = new ServerHandler(); 
    private GUI gui = new GUI(this); 

    public void searchDrinks(String jtf) { 
     drinkar = serverH.drinksStartsWith(jtf); 
     if(drinkar!=null) { 
      gui.setDrinks(new ArrayList(drinkar.entrySet())); 
      gui.setIngredients(new ArrayList()); 
     } 
     System.out.println(drinkar); 
    } 

    public void drinkInformation(String drink) { 
     ArrayList<String> result = drinkar.get(drink); 
     if(result!=null) { 
      gui.setIngredients(result); 
     } 
    } 

    public static void main(String[] args) { 
     ClientController controller = new ClientController(); 
    } 
} 

這裏是我的GUI類

public class GUI implements ActionListener { 

private JFrame frame = new JFrame("Dryck & Ingrediens"); // GUI 
private JTextField jtf = new JTextField();// GUI 
private JTextArea jl1 = new JTextArea();// GUI 
private JList jl = new JList();// GUI 
private JButton b = new JButton("Sök"); 
private JScrollPane js = new JScrollPane(jl);// GUI 
private JLabel lab = new JLabel("Ange dryck");//GUI 
private JLabel lab1 = new JLabel("Walid Shams"); 
private JLabel lab2 = new JLabel("Kushtrim Brahimi"); 
private ClientController controller; 
// private HashMap<String, ArrayList<String>> drinkar = null;//Controller 
// private ServerHandler serverH = new ServerHandler(); 

public GUI(ClientController controller) { 
    this.controller = controller; 

    frame.getContentPane().setLayout(null); 
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    frame.setBounds(50, 300, 420, 400); 
    frame.setResizable(false); 
    frame.setVisible(true); 
    js.add(jl); 
    js.add(jl1); 
    jl1.setEditable(false); 
    lab.setBounds(90, 20, 130, 20); 
    lab1.setBounds(300, 310, 130, 20); 
    lab2.setBounds(300, 330, 130,20); 
    jtf.setBounds(50, 40, 150, 40); 
    b.setBounds(230, 40, 100, 40); 
    jl.setBounds(50, 90, 150, 200); 
    jl1.setBounds(210, 90, 150, 200); 
    Container con = frame.getContentPane(); 
    con.setBackground(Color.cyan); 


    jl.addListSelectionListener(new ListSelectionListener() { 

     // sorterar ingredienserna för vald drink och skriver ut i textArea 
     public void valueChanged(ListSelectionEvent e) { 
      if (jl.getSelectedIndex() != -1) { 
       String item = (String) jl.getSelectedValue(); 
       jl1.setText(""); 
//      controller.drinkInformation(item); 
      }else{ 
       jl1.setText(""); 
      } 
     } 
    }); 
    frame.add(jtf); 
    frame.add(jl); 
    frame.add(jl1); 
    frame.add(lab); 
    frame.add(lab1); 
    frame.add(lab2); 
    frame.add(js); 
    frame.add(b); 

    b.addActionListener(this); 
} 

public void actionPerformed(ActionEvent e) { 
    if(e.getSource().equals(b)){ 
     if (jtf.getText().length() > 0) { 
      controller.searchDrinks(jtf.getText()); 
     } 
    } 

} 

public void setDrinks(ArrayList<String> drinks) { 
    DefaultListModel model = new DefaultListModel(); 

    for(int i = 0; i < drinks.size(); i++){ 
     model.addElement(drinks.get(i)); 
    } 
    jl.setModel(model); 

} 

public void setIngredients(ArrayList<String> ingredients) { 

    for(String ingredient : ingredients){ 
     jl1.append(ingredient + "\n"); 
    } 
} 

} 

最後我的服務器

public class Server { 

    private ServerSocket server; 
    private Socket socket; 
    private ObjectOutputStream oos; 
    private DataOutputStream dos; 
    private DataInputStream dis; 
    private HashMap<String, ArrayList<String>> drinkar = new HashMap<String, ArrayList<String>>(); 
    private int port; 

    public Server(int port){ 
     this.port = port; 
     Thread connectThread = new Thread(new Connect()); 
     connectThread.start(); 
    } 

    // låter en klient koppla upp sig till servern 
    private class Connect implements Runnable { 
     public void run() { 
      try { 
       server = new ServerSocket(port); 
       System.out.println("Server running"); 
       while (true) { 
        socket = server.accept(); 
        Thread clientThread = new Thread(new TalkToClient(socket)); 
      clientThread.start(); 
        System.out.println("someone connected"); 
       } 
      } catch (IOException ex) { 
       Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex); 
      } 
      try { 
       server.close(); 
      } catch(Exception e) {} 
     } 
    } 

    // sköter kommunikationen med klienter 
    private class TalkToClient implements Runnable{ 
     private Socket socket; 
     public TalkToClient(Socket socket) { 
      this.socket = socket; 
     } 
     public void run() { 
      String clientMsg; 
      try { 
       dis = new DataInputStream(socket.getInputStream()); 
       while ((clientMsg = dis.readUTF()) != null) { 
        if (clientMsg.length() > 0) { 
         dos = new DataOutputStream(socket.getOutputStream()); 
         dos.writeUTF("read"); 
         drinkar = Mysql.getDrinks(clientMsg); 
         sendNames(); 
        } 
       } 
      } catch (Exception e) { 
       System.out.println(e); 
      } 

     } 

    } 

    // skickar med hashmapen med writeObject 
    public void sendNames() { 

     try { 
      oos = new ObjectOutputStream(socket.getOutputStream()); 
      oos.writeObject(drinkar); 
     } catch (IOException ex) { 
      Logger.getLogger(Server.class.getName()).log(Level.SEVERE, null, ex); 
     } 
    } 

    public static void main(String[] args) { 
     new Server(4444); 
    } 
} 

Answer 1

必須在ServerHandler代碼中的問題，我認爲。你可以發佈這個類的代碼嗎？當您在ServerHandler之前初始化GUI時會發生什麼？

Answer 2

當服務器啓動時，它寫入輸出流。它鎖定試圖連接到服務器的客戶端。