Solved

exception trying to convert String "4

Posted on 2004-04-19
3
1,026 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
  • 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

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

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

Suggested Solutions

Google always has something new and amazing up its sleeve, and the most current thing that they have been working on is another step in the evolution of Google Search, from machine learning to its brilliant successor, deep learning.
This problem is more common than not and I will show you some things to check to solve this problem.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …

821 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