Solved

exception trying to convert String "4

Posted on 2004-04-19
3
1,030 Views
Last Modified: 2007-12-19
Hi,
I could swear that this used to work but I've taken too long of a break from coding... Here is the code:
<c:set var="IDforProject" value="0" />

<%-- Check to see if project in cbo --%>
<c:if test="${param.cboProject != 0}" >
  <%-- IDforProject is the value for the cbo entry --%>
  <c:set var="IDforProject" value="${param.cboProject}" />
</c:if>

cboProject is a select on a from in aiNew (please excuse my VB roots ;)

And here is the error message from Tomcat 4.1.27:

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: javax.servlet.jsp.JspException: An error occurred while evaluating custom action attribute "test" with value "${param.cboProject != 0}": An exception occured trying to convert String "4              
                        " to type "java.lang.Long" (null)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:432)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:356)
at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:430)
at org.apache.jsp.aiNew_jsp._jspx_meth_c_if_4(aiNew_jsp.java:580)
at org.apache.jsp.aiNew_jsp._jspx_meth_c_if_0(aiNew_jsp.java:427)
at org.apache.jsp.aiNew_jsp._jspService(aiNew_jsp.java:87)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
.....

I thought that JSTL would take care of converting the string "4" to allow a numeric comparison automatically?  My code is full of these kinds of tests so something must have changed but not sure what.  Also, the error message points to aiNew.jsp, but the error is really occuring in aiRequestNewProc.jsp as a result of <jsp:forward page="aiRequestNewProc.jsp" />.

Thanks,
Eric
0
Comment
Question by:EricE
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 35

Accepted Solution

by:
TimYates earned 200 total points
ID: 10866426
Sounds like ${param.cboProject} has a CR or LF in it...ie:  

param.cboProject = "4\n" ;

try trim() ing the value before you set it up, or try to avoid putting the \n in...

Tim
0
 

Author Comment

by:EricE
ID: 10875229
Hi,
Bingo, sometimes when I go back and forth between Dreamweaver and Ultraedit, Dreamweaver does some funny things with the line returns.

Thanks,
Eric
0
 
LVL 35

Expert Comment

by:TimYates
ID: 10875852
:-)  Glad I could help! :-)

Good luck with it!!

Tim
0

Featured Post

On Demand Webinar - Networking for the Cloud Era

This webinar discusses:
-Common barriers companies experience when moving to the cloud
-How SD-WAN changes the way we look at networks
-Best practices customers should employ moving forward with cloud migration
-What happens behind the scenes of SteelConnect’s one-click button

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In part one, we reviewed the prerequisites required for installing SQL Server vNext. In this part we will explore how to install Microsoft's SQL Server on Ubuntu 16.04.
Gain an elementary understanding of Blockchain technology.
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question