捕獲大量JTextFields的文本更改

Question

我正在開發一個swing應用程序，並在決定什麼可能是保存大量JTextField的值的最佳方法時發生。 應用程序從某個網絡位置讀取屬性文件。屬性文件對每個特定用戶都有大約10-12個屬性，稱propertyA_1是用戶1的屬性，用戶2是propertA_2。屬性中將有大約10-12個用戶，因此它將使大約80個JTextField顯示值。每個用戶的屬性將顯示在JTabbedPane上。 現在我想要做的是，當用戶爲每個JTabbedPane中顯示的任何用戶更改任何JTextField的值並單擊「Save」buttton時，應該保存該屬性的值。 告訴我什麼可能是處理大量JtextField的最佳方法。我想這樣做2種方式

1. 點擊「保存」按鈕保存每個值的屬性，從所有的JTextFields獲取值。
2. 某些方法可以僅獲取文本被更改並保存其值的JTextField。

我不知道如何做選項2的事情，但我認爲這是最好的方法。

這裏是我的代碼：

public class IOSAutomationTool1 implements ActionListener { 

     JButton saveButton = new JButton("Click to Save"); 

    /** 
    * @param args the command line arguments 
    */ 

    public void Test() throws IOException { 

     File file = new File("C:\\Documents and Settings\\test\\Desktop\\test.properties"); 

     if(file != null){ 

      Properties property = new Properties(); 

      property.load(new FileInputStream(file)); 

       JFrame frame = new JFrame("IOSAutomationToolFourthPage"); 
       frame.setLayout(new FlowLayout()); 
       JPanel framePanel = new JPanel(); 
       JPanel buttonPanel = new JPanel(); 
       framePanel.setSize(700,700); 
       frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
       String numberOfClients = property.getProperty("numberOfClients"); 
       System.out.println("number of clients: "+numberOfClients); 


       saveButton.addActionListener(this); 
       buttonPanel.add(saveButton); 
       if (!numberOfClients.isEmpty()) { 

        int numberOfClientNumb = Integer.parseInt(numberOfClients); 

         System.out.println("numberOfClientNumb ::" + numberOfClientNumb); 

         JTabbedPane tab = new JTabbedPane(); 

         // JTabbedPane tab2 = new JTabbedPane(); 
        for(int i=1; i<=numberOfClientNumb; i++){ 

         JPanel panel = new JPanel(); 
         panel.setSize(400, 400); 
         panel.setLayout(new GridBagLayout()); 
         GridBagConstraints gbc = new GridBagConstraints(); 
         gbc.insets = new Insets(1, 1, 1, 1); 

         gbc.fill = GridBagConstraints.BOTH; 
         gbc.weightx = 0; 
         gbc.gridx = 0; 

         //Remote IP 
         JLabel remoteIPLbl = new JLabel("Remote IP : "); 
         panel.add(remoteIPLbl,gbc); 
         JLabel userNameLbl = new JLabel("User Name : "); 
         panel.add(userNameLbl,gbc); 
         JLabel remotePasswordLbl = new JLabel("Remote Password : "); 
         panel.add(remotePasswordLbl,gbc); 
         JLabel remotePathLbl = new JLabel("Remote Path : "); 
         panel.add(remotePathLbl,gbc); 
         JLabel deviceOrSimulatorLbl = new JLabel("Device or Simulator : "); 
         panel.add(deviceOrSimulatorLbl,gbc); 

         gbc.gridx = 1; 
         gbc.weightx = 1; 

         String remoteIPVal = property.getProperty("remoteIP_"+i); 
         JTextField remoteIPField = new JTextField(remoteIPVal); 
         //remoteIPLbl.setBounds(50, 100, 2, 2); 
        remoteIPField.setBounds(200, 100, 2, 2); 
         remoteIPField.setColumns(30); 
         panel.add(remoteIPField,gbc);  

         //Remote User Name 


         String userNameVal = property.getProperty("remoteUserName_"+i); 
         JTextField userNameField = new JTextField(userNameVal); 
        // userNameLbl.setBounds(50, 200, 2, 2); 
         userNameField.setBounds(200, 200, 2, 2); 
         userNameField.setColumns(20); 
         panel.add(userNameField,gbc); 

         //Remote Password 

         String remotePasswordVal = property.getProperty("remotePassword_"+i); 
         JTextField remotePasswordField = new JTextField(remotePasswordVal); 
        // remotePasswordLbl.setBounds(50, 300, 2, 2); 
         remotePasswordField.setBounds(200, 300, 2, 2); 
         remotePasswordField.setColumns(20); 
         panel.add(remotePasswordField,gbc); 


         //Remote Path 

         String remotePathVal = property.getProperty("remotePath_"+i); 
         JTextField remotePathField = new JTextField(remotePathVal); 
        // remotePathLbl.setBounds(50, 400, 2, 2); 
        remotePathField.setBounds(200, 400, 2, 2); 
         remotePathField.setColumns(100); 
         panel.add(remotePathField,gbc); 



         //deviceOrSimulator 

         String deviceOrSimulatorVal = property.getProperty("deviceOrSimulator_"+i); 
         JTextField deviceOrSimulatorField = new JTextField(deviceOrSimulatorVal); 
         //deviceOrSimulatorLbl.setBounds(50, 500, 2, 2); 
         deviceOrSimulatorField.setBounds(200, 500, 2, 2); 
         deviceOrSimulatorField.setColumns(1); 
         panel.add(deviceOrSimulatorField,gbc); 


         tab.add("Client "+i,panel); 
         System.out.println(""+i);      
        } 

        framePanel.add(tab); 

        frame.add(framePanel); 

        // frame.setLayout(new Lay); 
       } 
       //frame.add(saveButton); 
       frame.add(buttonPanel); 
       frame.setSize(800, 800); 
       frame.pack(); 
       frame.setVisible(true); 

     } 
    } 

    @Override 
    public void actionPerformed(ActionEvent e) { 
     //throw new UnsupportedOperationException("Not supported yet."); 

     if(e.getSource() == saveButton){ 
      System.out.print("button clicked..........."); 
     } 
    } 

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

     IOSAutomationTool1 obj = new IOSAutomationTool1(); 
     obj.Test(); 
    } 
} 

Answer 1

要詳細一點在什麼@nlcE牛是在暗示，你可以做的是這樣的：

1）讓你的財產決賽：

 final Properties property = new Properties(); 

2）在您的for循環，創建一個DocumentListener：

DocumentListener listener = new DocumentListener() { 

     private void updatePropertyForEvent(final Properties property, DocumentEvent e) { 
      Document document = e.getDocument(); 
      Object value = document.getProperty("key"); 
      if (value !=null) 
       try { 
        property.setProperty((String) value, document.getText(0, document.getLength())); 
       } catch (BadLocationException e1) { 
        // Should not happpen 
        e1.printStackTrace(); 
       } 
     } 

     @Override 
     public void removeUpdate(DocumentEvent e) { 
      updatePropertyForEvent(property, e); 
     } 

     @Override 
     public void insertUpdate(DocumentEvent e) { 
      updatePropertyForEvent(property, e);     
     } 

     @Override 
     public void changedUpdate(DocumentEvent e) { 
      updatePropertyForEvent(property, e);     
     } 
    }; 

3）對於每一個文本框創建，你把相關的文件，將存儲它代表了財產的屬性，並添加監聽器作爲的DocumentListener：

String remotePasswordVal = property.getProperty("remotePassword_"+i); 
JTextField remotePasswordField = new JTextField(remotePasswordVal); 
remotePasswordField.getDocument().putProperty("key", "remotePassword_"+i); 
remotePasswordField.getDocument().addDocumentListener(listener); 

4）當你點擊「保存」 ，您只需將property保存到outputStream即可。

這是快速&骯髒的解決方案。更清潔的選擇是使用適當的MVC模式。