sql server2000 jdbc连接问题~大家帮忙！
type   Exception   report

message  

description   The   server   encountered   an   internal   error   ()   that   prevented   it   from   fulfilling   this   request.

exception  

org.apache.jasper.JasperException:   /web/flysky/regist.jsp(9,0)   The   value   for   the   useBean   class   attribute   opendb.opendb   is   invalid.

这个是怎么回事啊？
下面是opendb.java
和注册页面regist.jsp
我放在了Tomcat的Tomcat   6.0\webapps\ROOT\


regist.jsp

<%@   page  
language= "java "
contentType= "text/html;   charset=UTF-8 "
pageEncoding= "UTF-8 "
import   =   "java.util.* "
import   =   "java.sql.* "
%>
<META   http-equiv= "Content-Type "   content= "text/html;   charset=UTF-8 ">
<jsp:useBean   id= "RegisterBean "   scope= "page "   class= "opendb.opendb "   />


<%
String   id=request.getParameter( "id ");
String   password=request.getParameter( "password ");
if   ((id==null)||(password==null))
{
%>
<p> 用户名和密码不能为空! </p>
<input   type= "button "   value= "返回修改 "   onclick= "histroy.back() ">
<%
}
else
{
String   sql= "select   *   from   user   where   id= ' "+id+ " ' ";
System.out.println( "sql::: "+sql);
ResultSet   rs=RegisterBean.executeQuery(sql);
if   (rs.next())
{
rs.close();
session.putValue( "register_message ", "duplicate   name   foung! ");
%>
<script   language=javascript>
window.location= "info.jsp?str=用户 <%=id%> 已经存在 "
</script>
<%
}
else
{
rs.close();
%>
<form   method= "post "   action= "register2.jsp ">
<input   type= "hidden "   name= "id "   value= " <%=id%> ">
<input   type= "hidden "   name= "password "   value= " <%=password%> ">

请检查您的注册信息 <br> <br>
<table   width= "60% "   border= "1 ">

<tr>
<td>
    账号:
</td>
<td>
    <%=id%>
</td>
</tr>

<tr>
<td>
    密码：
</td>
<td>
    <%=password%>
</td>
</tr>

</table>
<br>

<input   type= "submit "   value= "提交注册 "> &nbsp;&nbsp;
<input   type= "reset "   value= "返回修改 "   onclick= "histroy.back() ">
</form>
<%
}
%>
</center>
<%
}
%>

</body>
</html>

opendb.java