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public class GuiCamera {
private String fileName; // 文件的前缀
private String defaultName = "GuiCamera";
static int serialNum = 0;
private String imageFormat; // 图像文件的格式
private String defaultImageFormat = "png";
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
/***************************************************************************
* 默认的文件前缀为GuiCamera，文件格式为PNG格式 The default construct will use the default
* Image file surname "GuiCamera", and default image format "png"
**************************************************************************/
public GuiCamera() {
fileName = defaultName;
imageFormat = defaultImageFormat;
}
/***************************************************************************
* @param s
* the surname of the snapshot file
* @param format
* the format of the image file, it can be "jpg" or "png"
* 本构造支持JPG和PNG文件的存储
**************************************************************************/
public GuiCamera(String s, String format) {
fileName = s;
imageFormat = format;
}
/***************************************************************************
* 对屏幕进行拍照 snapShot the Gui once
**************************************************************************/
public void snapShot() {
try {
// 拷贝屏幕到一个BufferedImage对象screenshot
// 这里 createScreenCapture中的4个参数就是需要截取的图形的2个顶点，也就是通过js确定的2个点
BufferedImage screenshot = (new Robot())
.createScreenCapture(new Rectangle(0, 0,
(int) d.getWidth(), (int) d.getHeight()));
serialNum++;
// 根据文件前缀变量和文件格式变量，自动生成文件名
String name = fileName + String.valueOf(serialNum) + "."
+ imageFormat;
File f = new File(name);
System.out.print("Save File " + name);
// 将screenshot对象写入图像文件
ImageIO.write(screenshot, imageFormat, f);
System.out.print("..Finished! ");
} catch (Exception ex) {
System.out.println(ex);
}
}
public static void main(String[] args) {
GuiCamera cam = new GuiCamera("Test", "png");
cam.snapShot();
}
}
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