JAVA功能代码《6》----用Java实现屏幕截图

6.用Java实现屏幕截图

import java.awt.Dimension;import java.awt.Rectangle;import java.awt.Robot;import java.awt.Toolkit;import java.awt.image.BufferedImage;import java.io.File;import javax.imageio.ImageIO;/******************************************************************* * 用Java实现屏幕截图 * 该JavaBean可以直接在其他Java应用程序中调用，实现屏幕的"拍照" *****************************************************/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screenshotBufferedImage 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!/n");} catch (Exception ex) {System.out.println(ex);}}public static void main(String[] args) {GuiCamera cam = new GuiCamera("d://Hello", "png");//cam.snapShot();}}