Java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;

/*******************************************************************************

* 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][e-mail][/email])

* @version 1.0

*

******************************************************************************/

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! ");

     } catch (Exception ex)

     {

         System.out.println(ex);

     }

     }

    public static void main(String[] args)

     {

     GuiCamera cam = new GuiCamera("Test", "png");

     cam.snapShot();

     }

}