開發過程中，經常遇到介面給了xml，需要轉化成javabean，欄位比較少還好，幾十個欄位或者更多的話，一個個欄位去手打實在太麻煩了，我寫了一個小工具來自動生成，省了不少事。

先貼程式碼

package Test;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import
 
 java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;

//實現介面ActionListener
public class Test implements ActionListener {

    JFrame jf;
    JPanel jpanel;
    JButton jb1, jb2, jb3, jb4;
    JTextArea jta = null
 
;
    JScrollPane jscrollPane;

    public Test() {

        jf = new JFrame("xml生成javabean工具");
        Container contentPane = jf.getContentPane();
        contentPane.setLayout(new BorderLayout());

        jta = new JTextArea(10, 15);
        jta.setTabSize(4);
        jta.setFont(new Font("標楷體", Font.BOLD, 16
 
));
        jta.setLineWrap(true);// 啟用自動換行功能
        jta.setWrapStyleWord(true);// 啟用斷行不斷字功能
        jta.setBackground(Color.pink);

        jscrollPane = new JScrollPane(jta);
        jpanel = new JPanel();
        jpanel.setLayout(new GridLayout(1, 4));

        jb1 = new JButton("複製");
        jb1.addActionListener(this);
        jb2 = new JButton("貼上");
        jb2.addActionListener(this);
        jb3 = new JButton("剪下");
        jb3.addActionListener(this);
        jb4 = new JButton("生成");
        jb4.addActionListener(this);
        jpanel.add(jb1);
        jpanel.add(jb2);
        jpanel.add(jb3);
        jpanel.add(jb4);

        contentPane.add(jscrollPane, BorderLayout.CENTER);
        contentPane.add(jpanel, BorderLayout.SOUTH);

        jf.setSize(400, 300);
        jf.setLocation(400, 200);
        jf.setVisible(true);

        jf.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });
    }

    // 覆蓋介面ActionListener的方法actionPerformed
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == jb1) {
            jta.copy();
        } else if (e.getSource() == jb2) {
            jta.paste();
        } else if (e.getSource() == jb3) {
            jta.cut();
        } else if (e.getSource() == jb4) {
            jta.setText(aotuChange(jta.getText()));
        }
    }

    public String aotuChange(String xml) {
        xml = xml.replaceAll("<.*</", "public String ");
        xml = xml.replace(">", "; ");
        return xml;
    }

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

原理很簡單，就是正則表示式替換

    public String aotuChange(String xml) {
        xml = xml.replaceAll("<.*</", "public String ");
        xml = xml.replaceAll("<(?!\\!)", "public String ");
        xml = xml.replaceAll("/>", "; ");
        xml = xml.replaceAll("(?<!-)>", "; ");
    }

關鍵程式碼就這幾行。

我把它生成了一個java小工具，可以直接雙擊執行。


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