Java中实现鼠标模拟与键盘映射
使用该类生成输入事件与将事件发送到 AWT 事件队列或 AWT 组件的区别在于：事件是在平台的本机输入队列中生成的。例如，Robot.mouseMove 将实际移动鼠标光标，而不是只生成鼠标移动事件。
Robot中主要的鼠标和键盘控制方法有：
- void keyPress(int keycode) 按下给定的键。
- void keyRelease(int keycode) 释放给定的键。
- void mouseMove(int x, int y) 将鼠标指针移动到给定屏幕坐标。
- void mousePress(int buttons) 按下一个或多个鼠标按钮。
- void mouseRelease(int buttons) 释放一个或多个鼠标按钮。
- void mouseWheel(int wheelAmt) 在配有滚轮的鼠标上旋转滚轮。
下面就让我们来实战鼠标控制，实现一个简单的鼠标控制程序MouseController。程序功能很简单：随机移动鼠标并点击左键。
代码如下：
import java.awt.AWTException;
import java.awt.Dimension;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.event.InputEvent;
import java.util.Random;
/**
*
* @author Xiaofeng Wang
*/
public class MouseController implements Runnable {
private Dimension dim;
private Random rand;
private Robot robot;
private volatile boolean stop = false;
/** Creates a new instance of Main */
public MouseController() {
dim = Toolkit.getDefaultToolkit().getScreenSize();
rand = new Random();
try {
robot = new Robot();
} catch (AWTException ex) {
ex.printStackTrace();
}
}
public void run() {
while(!stop) {
int x = rand.nextInt(dim.width);
int y = rand.nextInt(dim.height);
robot.mouseMove(x, y);
robot.mousePress(InputEvent.BUTTON1_MASK);
try {
Thread.sleep(3000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
}
public synchronized void stop() {
stop = true;
}
/** * @param args the command line arguments */
public static void main(String[] args) {
MouseController mc = new MouseController();
Thread mcThread = new Thread(mc);
System.out.println("Mouse Controller start");
mcThread.start();
try {
Thread.sleep(60000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
mc.stop();
System.out.println("Mouse Controller stoped");
}
}
当然键盘映射也类似，无非是使用void keyPress(int keycode)。
现 在实现了控制鼠标和键盘，接下了我们要获取操作后的效果（屏幕截图）。好在Robot类也提供了一个方法：BufferedImage createScreenCapture(Rectangle screenRect)；可以直接将全屏幕或某个屏幕区域的像素拷贝到一个BufferedImage对象中。
好，下面实战使用robot截屏，实现Capture程序，每隔１秒截屏一次。
代码如下：
public class Capture extends javax.swing.JFrame implements Runnable {
/** Creates new form Capture */
public Capture() {
initComponents();
try {
robot = new Robot();
} catch (AWTException ex) {
ex.printStackTrace();
}
dim = Toolkit.getDefaultToolkit().getScreenSize(); }
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold desc=" 生成的代码 " defaultstate="collapsed"></editor-fold>
private void initComponents() {
screenCanvas = new java.awt.Canvas();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
stop = true;
setResizable(false);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(screenCanvas, javax.swing.GroupLayout.PREFERRED_SIZE, 519, javax.swing.GroupLayout.PREFERRED_SIZE) );
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(screenCanvas, javax.swing.GroupLayout.PREFERRED_SIZE, 434, javax.swing.GroupLayout.PREFERRED_SIZE)
);
pack();
}//
/** * @param args the command line arguments */
public static void main(String args[]) {
final Capture capture = new Capture();
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
capture.setVisible(true);
}
});
Thread cutThread = new Thread(capture);
cutThread.start();
}
public void run() {
stop = false;
while(!stop) {
BufferedImage bImage = robot.createScreenCapture(new Rectangle(dim.width, dim.height));
Graphics g = this.screenCanvas.getGraphics();
g.drawImage(bImage, 0, 0, this);
try {
Thread.sleep(1000);
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
}
private synchronized void stop() {
stop = true;
}
// 变量声明 - 不进行修改
private java.awt.Canvas screenCanvas;
// 变量声明结束
private volatile boolean stop;
private Robot robot;
private Dimension dim;
}
