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package com.cssweb.common.util;
import java.io.*;
import java.util.*;
import com.sun.image.codec.jpeg.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.awt.*;
import java.awt.image.*;
/*
* ¹¦ÄÜ£ºµ÷ÓÃAuthServlet¿ÉÒÔÉú³ÉÒ»¸öÑéÖ¤ÂëͼƬ,ͼƬµÄ¿í¶ÈºÍ¸ß¶È¿ÉÒÔ×Ô¶¨Òå
* µ÷Óøñʽ: /servlet/AuthServlet?width=60&height=20
*      »òÕß/servlet/AuthServlet
* ʱ¼ä£º2007-9-4
*  
*
*/
public class AuthServlet extends HttpServlet {
private static final long serialVersionUID = 8433932715396048208L;
private Font mFont=new Font("Times New Roman", Font.PLAIN,18);//ÉèÖÃ×ÖÌå
// ´¦Àípost
public void doPost(HttpServletRequest request,HttpServletResponse response)
  throws ServletException,IOException {
  doGet(request,response);
}
public void doGet(HttpServletRequest request,HttpServletResponse response)
      throws ServletException,IOException {
  // È¡µÃÒ»¸ö1000-9999µÄËæ»úÊý
  HttpSession session=request.getSession();//request.getSession(false)µ±²ÎÊýΪfalseʱ£¬ÓпÉÄܲ»´´½¨session
  response.setContentType("image/gif");
  response.setHeader("Pragma","No-cache");
  response.setHeader("Cache-Control","no-cache");
  response.setDateHeader("Expires", 0);
  int width=60;
  int height=20;
  if(request.getParameter("width")!=null && !request.getParameter("width").equals(""))
   width = Integer.parseInt(request.getParameter("width"));
  if(request.getParameter("height")!=null && !request.getParameter("height").equals(""))
   height = Integer.parseInt(request.getParameter("height"));
                
     ServletOutputStream out=response.getOutputStream();
     BufferedImage i