import?java.awt.Color;
import?java.awt.Font;
import?java.awt.Graphics;
import?java.awt.image.BufferedImage;
import?java.io.IOException;
import?java.util.Random;

import?javax.imageio.ImageIO;
import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?javax.servlet.http.HttpSession;


public?class?AuthImg?extends?HttpServlet{
	private?Font?mFont=new?Font（“Arial?Black“Font.PLAIN16）;
	public?void?init（）throws?ServletException{
		super.init（）;
	}
	public?Color?getRandColor（int?fcint?bc）{
		Random?random=new?Random（）;
		if（fc>255）?fc=255;
		if（bc>255）?bc=255;
		int?r=fc+random.nextInt（bc-fc）;
		int?g=fc+random.nextInt（bc-fc）;
		int?b=fc+random.nextInt（bc-fc）;
		return?new?Color（rgb）;
	}
	public?void?Service（HttpServletRequest?requestHttpServletResponse?response）throws?ServletExceptionIOException{
		response.setHeader（“Pragma““No-cache“）;
		response.setDateHeader（“Expires“0）;
		response.setContentType（“image/jpeg“）;
		int?width=100;
		int?height=18;
		BufferedImage?image=new?BufferedImage（widthheightBufferedImage.TYPE_INT_RGB）;
		Graphics?g=image.getGraphics（）;
		Random?random=new?Random（）;
		g.setColor（getRandColor（200250））;
		g.drawRect（00width-1height-1）;
		g.setFont（mFont）;
		g.setColor（getRandColor（160200））;
		for（int?i=0;i<155;i++）{
			int?x=random.nextInt（width-1）;
			int?y=random.nextInt（height-1）;
			int?x1=random.nextInt（6）+1;
			int?y1=random.nextInt（12）+1;
			g.drawLine（x?y?x+x1?y+y1）;
		}
		for（int?i=0;i<70;i++）{
			int?x=random.nextInt（width-1）;
			int?y=random.nextInt（height-1）;
			int?x1=random.nextInt（12）+1;
			int?y1=random.nextInt（6）+1;
			g.drawLine（x?y?x-x1y-?y1）;
		}
		String?sRand=““;
		for（int?i=0;i<6;i++）{
			String?tmp=getRandomChar（）;
			sRand+=tmp;
			g.setColor（new?Color（20+random.nextInt（110）20+random.nextInt（110）20+random.nextInt（110）））;
			g.drawString（tmp15*i+1015）;
			HttpSession?session=request.getSession（true）;
			session.setAttribute（“rand“sRand）;
			g.dispose（）;
			ImageIO.write（image?“JPEG“?response.getOutputStream（））;
		}
		
	}
	private?String?getRandomChar（）{
		int?rand=（int）Math.round（Math.random（）*2）;
		long?itmp=0;
		char?ctmp=‘\u0000‘;
		switch（rand）{
			case?1:
				itmp=Math.round（Math.random（）*25+65）;			
			case?2:
				itmp=Math.round（Math.random（）*25+97）;
		}
		ctmp=（char）itmp;
		return?String.valueOf（ctmp）;
	}

}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1425??2010-11-02?19:41??LoginAndRegister\.classpath

?????文件????????566??2010-10-23?18:12??LoginAndRegister\.myhibernatedata

?????文件????????321??2010-11-02?19:38??LoginAndRegister\.mymetadata

?????文件????????240??2010-10-23?18:03??LoginAndRegister\.mystrutsdata

?????文件???????1915??2010-10-23?18:43??LoginAndRegister\.project

?????文件????????500??2010-10-23?17:57??LoginAndRegister\.settings\.jsdtscope

?????文件????????330??2010-10-23?17:57??LoginAndRegister\.settings\org.eclipse.jdt.core.prefs

?????文件?????????49??2010-10-23?17:57??LoginAndRegister\.settings\org.eclipse.wst.jsdt.ui.superType.container

?????文件??????????6??2010-10-23?17:57??LoginAndRegister\.settings\org.eclipse.wst.jsdt.ui.superType.name

?????文件????????462??2010-10-23?18:12??LoginAndRegister\.springBeans

?????文件???????2512??2010-10-30?10:12??LoginAndRegister\src\applicationContext.xml

?????文件???????2528??2010-10-24?16:08??LoginAndRegister\src\AuthImg.java

?????文件???????1186??2010-10-24?10:48??LoginAndRegister\src\baseAction-validation.xml

?????文件????????194??2010-10-23?22:55??LoginAndRegister\src\baseAction.java

?????文件???????1061??2010-10-24?10:54??LoginAndRegister\src\LoginAction.java

?????文件????????759??2010-11-01?12:09??LoginAndRegister\src\RegisterAction.java

?????文件????????792??2010-10-27?22:29??LoginAndRegister\src\struts.xml

?????文件????????476??2010-10-27?16:16??LoginAndRegister\src\User.hbm.xml

?????文件????????492??2010-10-27?16:15??LoginAndRegister\src\User.java

?????文件????????249??2010-10-23?22:55??LoginAndRegister\src\UserDao.java

?????文件???????1102??2010-10-23?22:55??LoginAndRegister\src\UserDaoHibernate.java

?????文件????????220??2010-10-23?22:55??LoginAndRegister\src\UserManager.java

?????文件???????1064??2010-10-31?22:11??LoginAndRegister\src\UserManagerImpl.java

?????文件????????748??2010-10-24?17:21??LoginAndRegister\src\ValidateNameAction.java

?????文件????????799??2010-10-26?19:08??LoginAndRegister\WebRoot\index.jsp

?????文件???????1185??2010-10-27?17:07??LoginAndRegister\WebRoot\login.jsp

?????文件?????????36??2010-10-23?17:57??LoginAndRegister\WebRoot\meta-INF\MANIFEST.MF

?????文件???????1422??2010-10-27?22:26??LoginAndRegister\WebRoot\register.jsp

?????文件???????2512??2010-10-30?10:12??LoginAndRegister\WebRoot\WEB-INF\classes\applicationContext.xml

?????文件???????3792??2010-11-02?19:41??LoginAndRegister\WebRoot\WEB-INF\classes\AuthImg.class

............此處省略26個文件信息