我正在开发一个swing应用程序，并决定什么是保存大量JTextFields值的最佳方法。 应用程序从某个网络位置读取属性文件。属性文件对于每个特定用户具有大约10-12个属性，例如propertyA_1是用户1的属性，而propertyA_2是用户2.属性中将有大约10-12个用户，因此它将使大约80个JTextField显示值。每个用户的属性都将显示在JTabbedPane上。 我现在要做的是，当用户为每个JTabbedPane中显示的任何用户更改任何JTextField的值并单击“保存”按钮时，应保存该属性的值。 告诉我什么是处理大量JtextField的最佳方法。我想到了两种方式
我不确定如何通过选项2来做这件事。但我认为这是最好的方式。
这是我的代码：
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();
}
}
答案 0 :(得分：2)
要详细说明@nlcE cOw的建议，你可以做的是这样的：
1）让你的财产最终：
final Properties property = new Properties();
2）在你的for循环之前，创建一个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）对于您创建的每个文本字段，您将在关联文档上放置一个属性，该属性将存储它所代表的属性，并将该侦听器添加为DocumentListener：
String remotePasswordVal = property.getProperty("remotePassword_"+i);
JTextField remotePasswordField = new JTextField(remotePasswordVal);
remotePasswordField.getDocument().putProperty("key", "remotePassword_"+i);
remotePasswordField.getDocument().addDocumentListener(listener);
4）当您按“保存”时，只需将property保存到outputStream。
这是快速＆amp;肮脏的解决更清洁的选择是使用适当的MVC模式。