Java应用程序实现屏幕的"拍照"

 1 package Camera;
 2 import java.awt.image.BufferedImage;
 3 import java.io.*;
 4 import javax.imageio.*;
 5 import java.awt.*;
 6 /*******************************************************************
 7  * 该JavaBean可以直接在其他Java应用程序中调用，实现屏幕的"拍照"
 8  * This JavaBean is used to snapshot the GUI in a 
 9  * Java application! You can embeded
10  * it in to your java application source code, and us
11  * it to snapshot the right GUI of the application
12  * @see javax.ImageIO
13  * @author Visec·Dana
14  * @version 1.0
15  *****************************************************/
16 public class GuiCamera {
17     private String fileName; //文件的前缀
18     private String defaultName = "GuiCamera";
19     static int serialNum=0;
20     private String imageFormat; //图像文件的格式
21     private String defaultImageFormat="png";
22     Dimension d=Toolkit.getDefaultToolkit().getScreenSize();
23 
24     /****************************************************************
25      * 默认的文件前缀为GuiCamera，文件格式为PNG格式
26      * The default construct will use the default 
27      * Image file surname "GuiCamera", 
28      * and default image format "png"
29      ****************************************************************/
30     public GuiCamera() {
31         fileName = defaultName;
32         imageFormat=defaultImageFormat;
33 
34     }
35     /****************************************************************
36      * @param s the surname of the snapshot file
37      * @param format the format of the  image file, 
38      * it can be "jpg" or "png"
39      * 本构造支持JPG和PNG文件的存储
40      ****************************************************************/
41     public GuiCamera(String s,String format){
42         fileName = s;
43         imageFormat=format;
44     }
45     /****************************************************************
46      * 对屏幕进行拍照
47      * snapShot the Gui once
48      ****************************************************************/
49     public void snapShot(){
50         try {
51             //拷贝屏幕到一个BufferedImage对象screenshot
52             BufferedImage screenshot = (new Robot()).createScreenCapture(new Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight()));
53             //根据文件前缀变量和文件格式变量，自动生成文件名
54             String name=fileName+String.valueOf(serialNum)+"."+imageFormat;
55             File f = new File(name);
56             System.out.print("Save File "+name);
57             //将screenshot对象写入图像文件
58             ImageIO.write(screenshot, imageFormat, f);
59             System.out.print("..Finished!\n");
60         }
61         catch (Exception ex) {
62             System.out.println(ex);
63         }
64     }
65 }

 1 package Camera;
 2 import java.text.SimpleDateFormat;
 3 import java.util.Date;
 4 /***
 5  * 实现屏幕的"拍照"
 6  * @author Visec·Dana
 7  */
 8 public class Client{
 9     public static void main(String[] args) {
10         Date date=new Date();
11         SimpleDateFormat df=new SimpleDateFormat("yyyy-MM-dd-HH-mm");
12         GuiCamera cam= new GuiCamera("F://"+df.format(date), "png"); 
13         cam.snapShot();
14     }
15 }