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screenshot 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!/n"); } catch (Exception ex) { System.out.println(ex); } } public static void main(String[] args) { GuiCamera cam = new GuiCamera("d://Hello", "png");// cam.snapShot(); } }
