Java实现截图并保存到本地
jopen
12年前
1.java实现截图并保存到本地
提供给大家三个方法,也是整理的,都不是很难,大家需要的看看哈
2.原理都相似
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package com.credream.ocr; 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; /******************************************************************************* * 该JavaBean可以直接在其他Java应用程序中调用，实现屏幕的"拍照" This JavaBean is used to snapshot the * GUI in a Java application! You can embeded it in to your java application * source code, and us it to snapshot the right GUI of the application * * @see javax.ImageIO * @author liluqun ([email]liluqun@263.net[/email]) * @version 1.0 * ******************************************************************************/ 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 = "jpg"; 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:\\qq", "bmp");// cam.snapShot(); } }-----------------------------------------------------------------------------
第二种方法:
package com.credream.ocr; import java.awt.AWTException; import java.awt.Color; import java.awt.Dimension; import java.awt.Graphics; import java.awt.GraphicsDevice; import java.awt.GraphicsEnvironment; import java.awt.Rectangle; import java.awt.Robot; import java.awt.Toolkit; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionAdapter; import java.awt.image.BufferedImage; import java.awt.image.RescaleOp; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.Date; import javax.imageio.ImageIO; import javax.swing.JFrame; import javax.swing.filechooser.FileSystemView; /** * java截屏 * 运行后将当前屏幕截取，并最大化显示。 * 拖拽鼠标，选择自己需要的部分。 * 按Esc键保存图片到桌面，并退出程序。 * 点击右上角（没有可见的按钮），退出程序，不保存图片。 * * @author JinCeon */ public class SnapshotTest { public static void main(String[] args) { // 全屏运行 RectD rd = new RectD(); GraphicsDevice gd = GraphicsEnvironment.getLocalGraphicsEnvironment() .getDefaultScreenDevice(); gd.setFullScreenWindow(rd); } } class RectD extends JFrame { private static final long serialVersionUID = 1L; int orgx, orgy, endx, endy; Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); BufferedImage image; BufferedImage tempImage; BufferedImage saveImage; Graphics g; @Override public void paint(Graphics g) { RescaleOp ro = new RescaleOp(0.8f, 0, null); tempImage = ro.filter(image, null); g.drawImage(tempImage, 0, 0, this); } public RectD() { snapshot(); setVisible(true); // setSize(d);//最大化窗口 setDefaultCloseOperation(EXIT_ON_CLOSE); this.addMouseListener(new MouseAdapter() { public void mousePressed(MouseEvent e) { orgx = e.getX(); orgy = e.getY(); } }); this.addMouseMotionListener(new MouseMotionAdapter() { public void mouseDragged(MouseEvent e) { endx = e.getX(); endy = e.getY(); g = getGraphics(); g.drawImage(tempImage, 0, 0, RectD.this); int x = Math.min(orgx, endx); int y = Math.min(orgy, endy); int width = Math.abs(endx - orgx)+1; int height = Math.abs(endy - orgy)+1; // 加上1，防止width或height为0 g.setColor(Color.BLUE); g.drawRect(x-1, y-1, width+1, height+1); //减1，加1都是为了防止图片将矩形框覆盖掉 saveImage = image.getSubimage(x, y, width, height); g.drawImage(saveImage, x, y, RectD.this); } }); this.addKeyListener(new KeyAdapter() { @Override public void keyReleased(KeyEvent e) { // 按Esc键退出 if (e.getKeyCode() == 27) { saveToFile(); System.exit(0); } } }); } public void saveToFile() { SimpleDateFormat sdf = new SimpleDateFormat("yyyymmddHHmmss"); String name = sdf.format(new Date()); File path = FileSystemView.getFileSystemView().getHomeDirectory(); String format = "jpg"; File f = new File(path + File.separator + name + "." + format); try { ImageIO.write(saveImage, format, f); } catch (IOException e) { e.printStackTrace(); } } public void snapshot() { try { Robot robot = new Robot(); Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); image = robot.createScreenCapture(new Rectangle(0, 0, d.width, d.height)); } catch (AWTException e) { e.printStackTrace(); } } }-------------------------------------------------------------
第三种方法:
package com.credream.robotExp; import java.awt.AWTException; import java.awt.Rectangle; import java.awt.Robot; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import javax.imageio.ImageIO; public class RobotExp { public static void main(String[] args) { try { Robot robot = new Robot(); BufferedImage bi=robot.createScreenCapture(new Rectangle(900,800)); // 根据指定的 区域(1300,800)抓取屏幕的指定区域 ImageIO.write(bi, "jpg", new File("D:/imageTest.jpg")); //把抓取到的内容写入到一 个jpg文件中 } catch (AWTException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } }----------------------------------------------------------------------
三种方法,大致相同,只不过加了些额外的方法,功能而已;都挺简单就不多说了...