[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

exception trying to convert String "4

Posted on 2004-04-19
3
Medium Priority
?
1,035 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 800 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

Hire Technology Freelancers with Gigs

Work with freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely, and get projects done right.

Question has a verified solution.

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

Are you looking for the options available for exporting EDB files to PST? You may be confused as they are different in different Exchange versions. Here, I will discuss some options available.
Tech spooks aren't just for those who are tech savvy, it also happens to those of us running a business. Check out the top tech spooks for business owners.
Visualize your data even better in Access queries. Given a date and a value, this lesson shows how to compare that value with the previous value, calculate the difference, and display a circle if the value is the same, an up triangle if it increased…
Sometimes it takes a new vantage point, apart from our everyday security practices, to truly see our Active Directory (AD) vulnerabilities. We get used to implementing the same techniques and checking the same areas for a breach. This pattern can re…

650 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