使用java.awt.Robot模拟退格键

Question

似乎存在模拟退格键的问题java.awt.Robot.

这个线程似乎证实了这一点,但它没有提出解决方案.

这有效:

Robot rob = new Robot();
rob.keyPress(KeyEvent.VK_A);
rob.keyRelease(KeyEvent.VK_A);

这不是:

Robot rob = new Robot();
rob.keyPress(KeyEvent.VK_BACK_SPACE);
rob.keyRelease(KeyEvent.VK_BACK_SPACE);

有任何想法吗？

Answer 1

它似乎在这个测试中起作用.

附录:关于引用的文章,"除了那些由Java语言(VK_ENTER,VK_BACK_SPACE和VK_TAB)定义的键之外,不要依赖于.的值VK_ constants.Sun保留根据需要更改这些值以适应更广泛范围的权利.未来的键盘." - java.awt.event.KeyEvent

public class RobotTest {

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new RobotTest().create();
            }
        });
    }

    private void create() {
        JFrame f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setLocationRelativeTo(null);
        f.setLayout(new FlowLayout());
        f.add(new JTextField(8));
        final JButton b = new JButton();
        f.getRootPane().setDefaultButton(b);
        b.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                b.setText("@" + e.getWhen());
            }
        });
        f.add(b);
        f.setSize(256, 128);
        f.setVisible(true);
        doTest();
    }

    private void doTest() {
        try {
            Robot r = new Robot();
            int[] keys = {
                KeyEvent.VK_T, KeyEvent.VK_E,
                KeyEvent.VK_S, KeyEvent.VK_T,
                KeyEvent.VK_Z, KeyEvent.VK_BACK_SPACE,
                KeyEvent.VK_ENTER
            };
            for (int code : keys) {
                r.keyPress(code);
                r.keyRelease(code);
            }
        } catch (AWTException ex) {
            ex.printStackTrace(System.err);
        }
    }
}