模拟与java.awt.Robot中的退格键 [英] simulate backspace key with java.awt.Robot

问题描述

有似乎是用模拟退格键的问题 java.awt.Robot中的。

There seems to be an issue simulating the backspace key with java.awt.Robot.

此线程似乎证实这一点，但它并没有提出解决方案。

This thread seems to confirm this but it does not propose a solution.

本作品：

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

这不：

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

任何想法？

推荐答案

看来在本次测试工作。

附录：从由Java语言（ VK_ENTER ， VK_BACK_SPACE 和 VK_TAB ），不依赖于 VK_常量的值。Sun保留修改权利这些值根据需要，以适应更大范围的键盘在未来 - <一href=\"http://java.sun.com/javase/6/docs/api/java/awt/event/KeyEvent.html\"><$c$c>java.awt.event.KeyEvent

Addendum: Regarding the cited article, "Aside from those keys that are defined by the Java language (VK_ENTER, VK_BACK_SPACE, and VK_TAB), do not rely on the values of the VK_ constants. Sun reserves the right to change these values as needed to accomodate a wider range of keyboards in the future."—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);
        }
    }
}

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