给你给现成的类你调用一下 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; /******************************************************************* * 本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 linys([email protected]) * @version 1.0 * *****************************************************/ public class GuiCamera { private String fileName; //文件的名字 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(); /**************************************************************** * 默认的文件名字为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; }
/**************************************************************** * 对屏幕实行拍照 * snapShot the Gui once ****************************************************************/ public void snapShot() {
我的思路如此.
一种办法:
首先知道你程序的位置
然后使用java.awt.Robot类的截图功能输出么就用javax.imageio.ImageIO类
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; /*******************************************************************
* 本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 linys([email protected])
* @version 1.0
*
*****************************************************/ public class GuiCamera
{
private String fileName; //文件的名字
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(); /****************************************************************
* 默认的文件名字为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;
}
/****************************************************************
* 对屏幕实行拍照
* 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++;
//根据文件前缀和文件格式,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", "jpg");//定义文件格式
cam.snapShot();
}
}
import java.awt.Graphics2D;
import java.awt.GridBagLayout;
import java.awt.Image;
import java.awt.Toolkit;import javax.swing.JPanel;public class MyPanel extends JPanel {
private static final long serialVersionUID = 1L;
private Image img = Toolkit.getDefaultToolkit().getImage("filename");
public void paintCom(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.drawImage(img,0,0,getWidth(),getHeight(),this);
}
public MyPanel() {
super(null,true); //空布局
initialize();
}
private void initialize() {
this.setSize(300, 200);
this.setLayout(new GridBagLayout());
}}