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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 (liluqun@263.net)
* @version 1.0
*
*****************************************************/
public 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!\n");
}
catch (Exception ex) {
System.out.println(ex);
}
}
public static void main(String[] args)
{
GuiCamera cam= new GuiCamera("d:\\Hello", "png");//
cam.snapShot();
}
}
Servlet版的:
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.awt.*;
import javax.imageio.ImageIO;
import java.awt.image.*;
public class SnapScreenServlet
extends HttpServlet {
private static final String CONTENT_TYPE = "image/png";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
if (request.getParameter("lzb") != null) {
doPost(request, response);
}
else {
response.sendError(response.SC_FORBIDDEN);
}
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
try {
BufferedImage screenshot = (new Robot()).createScreenCapture(new
Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
ImageIO.write(screenshot, "png", response.getOutputStream());
}
catch (Exception ex) {
System.out.println(ex);
response.sendError(response.SC_INTERNAL_SERVER_ERROR, ex.getMessage());
}
}
//Clean up resources
public void destroy() {
}
}
web.xml部分:
<servlet>
<servlet-name>snapscreenservlet</servlet-name>
<servlet-class>com.bluepure.commons.servlets.SnapScreenServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>snapscreenservlet</servlet-name>
<url-pattern>/snapscreenservlet</url-pattern>
</servlet-mapping>
<servlet>