Java實現截屏

Java實現截屏

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;

/*******************************************************************
* 該JavaBean可以直接在其他Java應用程序中調用，實現屏幕的"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 protected])
* @version 1.0
*
*****************************************************/

public class GuiCamera
{
private String fileName; //文件的前綴
private String defaultName = "GuiCamera";
static int serialNum=0;
private String imageFormat; //圖像文件的格式
private String defaultImageFormat="png";
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

/****************************************************************
* 默認的文件前綴為GuiCamera，文件格式為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"
* 本構造支持JPG和PNG文件的存儲
****************************************************************/
public GuiCamera(String s,String format) {

fileName = s;
imageFormat=format;
}

/****************************************************************
* 對屏幕進行拍照
* snapShot the Gui once
****************************************************************/
public void snapShot() {

try {
//拷貝屏幕到一個BufferedImage對象screenshot
BufferedImage screenshot = (new Robot()).createScreenCapture(new
Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight()));
serialNum++;
//根據文件前綴變量和文件格式變量，自動生成文件名
String name=fileName+String.valueOf(serialNum)+"."+imageFormat;
File f = new File(name);
System.out.print("Save File "+name);
//將screenshot對象寫入圖像文件
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();
}
}