帮我检查为什么出现如此的错误：关于TOMCAT配置连接池的问题（在线等待）

错误提示：
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: /chklogin.jsp(49,2) Expected "param" tag with "name" and "value" attributes
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:83)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:402)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:126)
org.apache.jasper.compiler.Parser.parseParam(Parser.java:892)
org.apache.jasper.compiler.Parser.parseBody(Parser.java:1838)
org.apache.jasper.compiler.Parser.parseOptionalBody(Parser.java:1100)
org.apache.jasper.compiler.Parser.parseForward(Parser.java:942)
org.apache.jasper.compiler.Parser.parseStandardAction(Parser.java:1253)
org.apache.jasper.compiler.Parser.parseElements(Parser.java:1597)
org.apache.jasper.compiler.Parser.parse(Parser.java:171)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:247)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:149)
org.apache.jasper.compiler.ParserController.parse(ParserController.java:135)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:237)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:456)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:552)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
note The full stack trace of the root cause is available in the Tomcat logs.
--------------------------------------------------------------------------------Apache Tomcat/5.0.16

解决方案 »

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把你的chklogin.jsp页面也贴出来
/chklogin.jsp(49,2) Expected "param" tag with "name" and "value" attributes看看你的ckhlogin.jsp(49.2)用到哪个"param"。查一下有没有配置错。
<%@ page contentType="text/html; charset=GBK" %>
<%@ page language="java" import="java.sql.*" %>
<html>
<meta http-equiv="Refresh" content="3 url = login.htm">
<title>
chklogin
</title>
<jsp:useBean id="conn" scope="page" class="popdomConnDB.ConnDB" />
<jsp:setProperty name="conn" property="*" /><body bgcolor="#ffffff"><%!
  ResultSet rs=null;
  String sql="";
  String sUserId="";
  String sPassword="";
%>
<%
//******************************************************************
if((request.getParameter("userId")==null)||(request.getParameter("password")==null)||(request.getParameter("userId").equals(""))||(request.getParameter("password").equals("")))
{
%>
<p align="center">　</p>
<p align="center">　</p>
<p align="center">　</p>
<p align="center">　</p>
<p align="center"><b><font size="3" color="#FF0000">用户名和密码不能为空！</font></b></p>
<p align="center"><b><font size="3" color="#ff0000">3秒后返回!</font></b></p>
<p align="center"><a href="login.htm"><img border="0" src="image/back.gif" width="75" height="42"></a></p>
<%
return;
}
//*******************************************************************
  sUserId = request.getParameter("userId").trim();
  sPassword = request.getParameter("password").trim();
  sql ="select * from com_operator where id='"+sUserId+"' and  password='"+sPassword+"'";
  rs = conn.executeQuery(sql);
  if(rs.next())
  {
   if(session.getAttribute("login")==null)
    {
         session.setAttribute("login","ok");
         session.setAttribute("userId",sUserId);
         session.setAttribute("Password",sPassword);
    }
%>
  <jsp:forward page="index.htm">
  </jsp:forward>
<%
  }
  else
  {
%>
<p align="center">　</p>
<p align="center">　</p>
<p align="center">　</p>
<p align="center">　</p>
<p align="center"><b><font size="3" color="#FF0000">错误的用户名或密码！</font></b></p>
<p align="center"><b><font size="3" color="#ff0000">3秒后返回!</font></b></p>
<p align="center"><a href="login.htm"><img border="0" src="image/back.gif" width="75" height="42"></a></p>

<%
  }
  rs.close();
%>
<br><br>
</body>
</html>
login.htm
<html>
<head>
<title>
Login
</title>
<style  type="text/css">
  .yk9{font:9pt "宋体"}
</style>
<base target="_parent">
</head>
<body bgcolor="#ffffff">
<h1>
<font size="+1" color="#FF0000">系统登陆</font>
</h1><p>
　
</p><div align="center"> <center>
<table border="0" cellspacing="0" width="698" height="279" bordercolor="#6699CC" cellpadding="0">
<tr><td height="256" width="682">
<form method="post" action="chklogin.jsp" name="myfrom"><table width="45%" cellspacing="0" cellpadding="1" border="1" align="center"
   bordercolordark="#ecf5ff" bordercolorlight="#6699cc" bordercolor="#6699CC">
<tr>
<td><table width="100%" border="0" cellspacing="1" cellpadding="1">
<tr>
   <td width="33%" align="right" height="30">用户名：</td>
   <td width="67%"> <input name="userId" maxlength="20" class="yk9" size="31"></td>
</tr>
<tr>
   <td width="33%" align="right" height="30">密码：</td>
   <td width="67%"> <input type="password" name="password" maxlength="16" class="yk9" size="31"></td> </tr>
    <tr>
  <td colspan="2" height="15"></td>
</tr>
</table>
</td>
</tr>
</center>
<tr align="center">
<td height="40">
                     
<input type="submit" name="Submit" value="确  定" class="yk9">
</td>
</tr>
</table>
<center>
</form>
</center>
</td>
</table></div>
  <p>                </p>
  <p>      </p>
</body>
</html>
全部贴完
觉得没有问题啊,你运行jsp后再按IE上的刷新按钮,然后在servlet里加断点,看看能不能进去.
%>
  <jsp:forward page="index.htm">
  </jsp:forward>
<%改成
response.sendRedirect("index.htm");
--
其实代码没错啊
应该是配置的问题了，我刚开始也是一样，怎么搞都不行。。后来我在网上搜索Microsoft SQL Server 2000 Driver for JDBC，这个SQL的驱动，你下载。EXE文件，安装了，就有这个文件夹C:\Program Files\Microsoft SQL Server 2000 Driver for JDBC，拷贝lib文件里面的三个文件到C:\tomcat\common\lib里面，重起tomcat，就OK
DataSource ds = null;
   try{
   InitialContext ctx=new InitialContext();
   ds=(DataSource)ctx.lookup("java:comp/env/jdbc/TestDB");
   Connection conn = ds.getConnection();
   Statement stmt = conn.createStatement();
   String strSql = " select * from strutsUser";
   ResultSet rs = stmt.executeQuery(strSql);
   while(rs.next()){
      System.out.println(rs.getString(1));
     }
   }
   catch(Exception ex){
    ex.printStackTrace();
   }
我以前调成功的一个例子，主要是这
   InitialContext ctx=new InitialContext();
   ds=(DataSource)ctx.lookup("java:comp/env/jdbc/TestDB");
你的lookup（）中的参数不对