500 Servlet Exception
WEB-INF/web.xml:24: <description> is an unexpected tag (parent <web-app>
starts at 21). Check for duplicate and out-of-order tags.
<web-app> syntax: (@id?, @version, @xsi:schemaLocation,
                   (<context-param>*
                   & (<description>*, <display-name>?, <icon>?)
                   & <distributable>?
                   & (<env-entry>*, <ejb-ref>*, <ejb-local-ref>*, <service-ref>*, <resource-ref>*, <resource-env-ref>*, <message-destination-ref>*)
                   & <error-page>*
                   & <filter>*
                   & <filter-mapping>*
                   & <jsp-config>?
                   & <listener>*
                   & <locale-encoding-mapping-list>?
                   & <login-config>?
                   & <message-destination>*
                   & <mime-mapping>*
                   & <security-constraint>*
                   & <security-role>*
                   & <servlet>*
                   & <servlet-mapping>*
                   & <session-config>?
                   & <welcome-file-list>?))

<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
  Copyright 2004 The Apache Software Foundation

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

<web-app xmlns="http://java.
    xmlns:xsi="http://www.
    xsi:schemaLocation="http://java. http://java.
    version="2.4">

  <display-name>Welcome to Tomcat</display-name>
  <description>
     Welcome to Tomcat
  </description>

<!-- JSPC servlet mappings start

    <servlet>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <servlet-class>org.apache.jsp.index_jsp</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <url-pattern>/index.jsp</url-pattern>
    </servlet-mapping>

 JSPC servlet mappings end -->

    <resource-ref>
        <description>Oracle Datasource example</description>
        <res-ref-name>jdbc/myoracle</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>

  <listener>
        <listener-class>
            encrypt.SessionCounter
        </listener-class>
    <!--
        <listener-class>
            pub.GetNewTimerListener
        </listener-class>
   
        <listener-class>
            pub.CreateNewHPListener
        </listener-class>
    -->
  </listener>  

</web-app>


谢谢版主

type Exception report

message

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

exception

org.apache.jasper.JasperException: /user/../inc/ini.jsp(4,0) The value for the useBean class attribute db.gdbcn is invalid.
    org.apache.(DefaultErrorHandler.java:39)
    org.apache.(ErrorDispatcher.java:409)
    org.apache.(ErrorDispatcher.java:150)
    org.apache.(Generator.java:1227)
    org.apache.(Node.java:1116)
    org.apache.(Node.java:2163)
    org.apache.(Node.java:2213)
    org.apache.(Node.java:2219)
    org.apache.(Node.java:456)
    org.apache.(Node.java:2163)
    org.apache.(Node.java:2213)
    org.apache.(Node.java:2237)
    org.apache.(Node.java:597)
    org.apache.(Node.java:2163)
    org.apache.(Node.java:2213)
    org.apache.(Node.java:2219)
    org.apache.(Node.java:456)
    org.apache.(Node.java:2163)
    org.apache.(Generator.java:3272)
    org.apache.(Compiler.java:244)
    org.apache.(Compiler.java:470)
    org.apache.(Compiler.java:451)
    org.apache.(Compiler.java:439)
    org.apache.jasper.(JspCompilationContext.java:511)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

还是不行，数据库联上了，点什么都是错误页面