java 截图功能

package cn.com.unutrip.java.opensource.image;

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"
 *
 * @author longgangbai
 *
 */

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;
   System.out.println("name =" + name);
   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("D://Test", "png");
  cam.snapShot();
 }
}

评论

1 楼 rockethj8 2010-10-12