我是菜鸟，No data found是什么意思？

[lantianning]

我用dreamweaver 8 生成一个动态的列表菜单，在记录集里测试过是有数据的，为什么还是出错，为什么呀？我是菜鸟，根本看不明错误提示！这些代码可是dreamweaver自动生成的呀。
HTTP Status 500 -

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type Exception report

message

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

exception

javax.servlet.ServletException: No data found
org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:848)
org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:781)
org.apache.jsp.deal.fault.addfault_jsp._jspService(org.apache.jsp.deal.fault.addfault_jsp:155)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


root cause

java.sql.SQLException: No data found
sun.jdbc.odbc.JdbcOdbc.standardError(Unknown Source)
sun.jdbc.odbc.JdbcOdbc.SQLGetDataString(Unknown Source)
sun.jdbc.odbc.JdbcOdbcResultSet.getDataString(Unknown Source)
sun.jdbc.odbc.JdbcOdbcResultSet.getString(Unknown Source)
sun.jdbc.odbc.JdbcOdbcResultSet.getObject(Unknown Source)
sun.jdbc.odbc.JdbcOdbcResultSet.getObject(Unknown Source)
org.apache.jsp.deal.fault.addfault_jsp._jspService(org.apache.jsp.deal.fault.addfault_jsp:106)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)


note The full stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs.


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