Question

java：求一个用swing来做小程序，我是用来修改配置文件用的，求代码谢谢

布局最好做成比如一个名字，后面是个输入框，换行再个名字，再个输入框那种，最下面一个确定按钮和一个推出按钮

Answer 1

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

@SuppressWarnings("serial")
public class Test02 extends JFrame {
private JPanel jp = new JPanel();

private JButton jb01 = new JButton("按钮一");
private JButton jb02 = new JButton("按钮二");
private JButton jb03 = new JButton("按钮三");
private JButton[] jb = new JButton[] { jb01, jb02, jb03 };
private JLabel jl = new JLabel("请单击按钮！");
private int count = 0;

public Test02() {
for (int i = 0; i < jb.length; i++) {
jp.add(jb[i]);
}
jp.add(jl);
this.add(jp);
this.setTitle("点按钮，记录单击按钮的次数和名字！");
jb01.addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
Test02.this.jl.setText(jl.getText());
}
});
for (int i = 0; i < jb.length; i++) {
jb[i].addActionListener(new ActionListener() {

@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (e.getSource() == jb01) {
Test02.this.jl.setText("您单击的是按钮一，您总共单机了" + (++count)
+ "次按钮");
} else if (e.getSource() == jb02) {
Test02.this.jl.setText("您单击的是按钮二，您总共单机了" + (++count)
+ "次按钮");
} else if (e.getSource() == jb03) {
Test02.this.jl.setText("您单击的是按钮三，您总共单机了" + (++count)
+ "次按钮");
}
}
});
this.setBounds(100, 100, 480, 130);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}

public static void main(String[] args) {
new Test02();
}
}

Answer 2

XML文件(e:\data\dbconfigure.xml)：
<?xml version="1.0" encoding="UTF-8"?>
<CONFIGUREDATA>
<CONFIGURE TYPE="SQL Server 2005">
<DRIVER>com.microsoft.sqlserver.jdbc.SQLServerDriver</DRIVER>
<URL>jdbc:sqlserver://localhost:1433;DatabaseName=DBName</URL>
<USERID>sa</USERID>
<PASSWORD>123</PASSWORD>
</CONFIGURE>
</CONFIGUREDATA>

Java程序(Test.java)：

import java.io.File;
import java.io.FileOutputStream;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;

public class Test{
public static void main(String[] args){
try{
String filepath = "E:\\data\\dbconfigure.xml";

File file = new File(filepath);
SAXBuilder builder = new SAXBuilder();
Document document = (Document) builder.build(file);
Element root = document.getRootElement();
Element elem1 = root.getChild("CONFIGURE");

//修改密码
elem1.getChild("PASSWORD").setText("123456");

//写回XML文件
Format format=Format.getRawFormat();
format.setEncoding("UTF-8");
XMLOutputter output=new XMLOutputter(format);
output.output(document, new FileOutputStream(filepath));
}
catch(Exception e){
e.printStackTrace();
}
}
}

Swing省略。

Answer 3

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

public class SwingTest extends JFrame{

JButton b;
JTextField tf;

public SwingTest() {

b = new JButton(" 测试 ");
this.add(b);
tf = new JTextField(20);
this.add(tf);
this.setLayout(new FlowLayout());
this.setBounds(200, 100, 300, 150);
this.setVisible(true);
b.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
String s = JOptionPane.showInputDialog("请输入：", "1");
tf.setText(s);
}
});
}
public static void main(String[] args) {
SwingTest st = new SwingTest();
}
}