跪求验证码代码 jsp struts框架下的

http://download.csdn.net/source/970523这有源码，免费拿去
<%@ page contentType="image/jpeg" import="java.awt.*,java.awt.image.*,java.util.*,javax.imageio.*" %>
<%!
Color getRandColor(int fc,int bc){//给定范围获得随机颜色
        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(r,g,b);
        }
%>
<%
//设置页面不缓存
response.setHeader("Pragma","No-cache");
response.setHeader("Cache-Control","no-cache");
response.setDateHeader("Expires", 0);// 在内存中创建图象
int width=60, height=18;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);// 获取图形上下文
Graphics g = image.getGraphics();//生成随机类
Random random = new Random();// 设定背景色
g.setColor(getRandColor(200,250));
g.fillRect(0, 0, width, height);//设定字体
g.setFont(new Font("Times New Roman",Font.PLAIN,18));//画边框
//g.setColor(new Color());
//g.drawRect(0,0,width-1,height-1);// 随机产生155条干扰线，使图象中的认证码不易被其它程序探测到
g.setColor(getRandColor(160,200));
for (int i=0;i<155;i++)
{
int x = random.nextInt(width);
int y = random.nextInt(height);
        int xl = random.nextInt(12);
        int yl = random.nextInt(12);
g.drawLine(x,y,x+xl,y+yl);
}// 取随机产生的认证码(4位数字)
String sRand="";
for (int i=0;i<4;i++){
    String rand=String.valueOf(random.nextInt(10));
    sRand+=rand;
    // 将认证码显示到图象中
    g.setColor(new Color(20+random.nextInt(110),20+random.nextInt(110),20+random.nextInt(110)));
//调用函数出来的颜色相同，可能是因为种子太接近，所以只能直接生成
    g.drawString(rand,13*i+6,16);
}// 将认证码存入SESSION
session.setAttribute("rand",sRand);// 图象生效
g.dispose();// 输出图象到页面
ImageIO.write(image, "JPEG", response.getOutputStream());
%>---------------------------------用户密码验证码核对-------------------------------------------//////////文件名 check.jsp<%@ page contentType="text/html; charset=gb2312"%>
<%@ page import="java.sql.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.util.Date"%>
<%@ page import="java.text.*"%>
<%@ include file="../conn.jsp"%>
<%
String username = new String(request.getParameter("adminname").getBytes("iso-8859-1"));
String pass = new String(request.getParameter("password").getBytes("iso-8859-1"));
   String useryz = request.getParameter("useryz");
String rand = (String)session.getAttribute("rand");if (rand.equals(useryz))
     {
//String sql=;
    ResultSet rs=stmt.executeQuery("select * from admin where admin='"+username+"'");
if (rs.next())
     {
   String admin=rs.getString("admin");
   String adminpwd=rs.getString("adminpwd");
   String qs=rs.getString("qs");
   String adminqs=rs.getString("adminqs");
   if(adminpwd.equals(pass)){
     session.setAttribute("admin",admin);
     session.setAttribute("adminpwd",adminpwd);
     session.setAttribute("qs",qs);
     session.setAttribute("adminqs",adminqs);     out.print("<script language='javascript'>");
     out.print("window.location.href='admin_index.jsp';");
     out.print("</script>");
     out.close();
   }
        else{
      out.print("<script>");
         out.print("alert('用户名或密码错误');");
         out.print("window.location.href='index.jsp';");
         out.print("</script>");
     }
   }
else{
      out.print("<script>");
         out.print("alert('用户名或密码错误');");
         out.print("window.location.href='index.jsp';");
         out.print("</script>");
}
stmt.close();
     conn.close();
//}
}
else
{
      out.print("<script>");
         out.print("alert('验证码输入有误!请核对!');");
         out.print("window.location.href='index.jsp';");
         out.print("</script>");
}
%>---------------------------------登陆页面--------------------------------------------///////////文件名------index.jsp<%@ page contentType="text/html; charset=gb2312"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>飞天论坛 ——管理员登录</title>
</head>
<style type=text/css>
body {
    background:#EFEFEF;
    font-size: 12px;
    margin-top:0px;
}INPUT {    FONT-SIZE: 12px;
    font-family: "宋体";
}
SPAN {
    FONT-SIZE: 12px; POSITION: static
}
a:link,a:visited {
    color: #0033FF;
    text-decoration: none;
}
</style>
<p> </p>
<p> </p>
<table align=center width=380 style="border: outset 3px;" cellpadding=0 cellspacing=0 ID="Table1">
    <tr>

    <td style="padding:3px;background-color:blue;color:white;FONT-SIZE:13px;">管理员登录--BBS论坛　　　　      </td>
    </tr>
    <tr valign=top>

    <td><img src="../image/title.gif" width="248" height="35"></td>
    </tr>
    <tr>
        <td style="padding:15px;">
<script language="Javascript">

</script>
        <table border="0">
        <form action="check.jsp" method="post" name="loginform" onSubmit="VF_loginform();return false;">
          <tr>
            <td><span style="width:80px;">用户名：</span></td>
            <td><input maxlength=20 type="text" name="adminname" style="width:200px;" tabindex="1"></td>
          </tr>
          <tr>
            <td><span style="width:80px;">密　码：</span></td>
            <td><input maxlength=20 type="password" name="password" style="width:200px;"></td>
          </tr>
          <tr>
            <td><span style="width:80px;">验证码：</span></td>
            <td style="FONT-SIZE: 12px;"><input name="useryz" type="text" id="useryz" style="width:62px;" value="" maxlength=4>
            验证码输入：<img src=image.jsp border=0></td>
          </tr>
          <tr>
            <td> </td>
            <td align="right"> </td>
          </tr>
          <tr>
            <td> </td>
            <td align="right"><input type="submit" value="登录" name="btnSubmit" style="width:80px;font:menu;" ID="Submit1"></td>
          </tr>
          </form>
        </table>        </td>
    </tr>
</table>
<br><br>
</body>
</html>---------------------------------access数据库连接文件-------------------------------///文件名 conn.jsp
<%
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
Connection conn=DriverManager.getConnection("jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=webapps/hzx/db/db.mdb;");//数据库
Statement stmt=conn.createStatement();
%>

调试易

跪求验证码代码 jsp struts框架下的

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跪求 验证码 代码 jsp struts框架下的

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跪求验证码代码 jsp struts框架下的