[Donald Scott]

Hello

I am having a problem with a jsp. Actually there are 2 issues that I think are related to one problem:
1) There is a compile error “Duplicate local variable sc”.
First, I tried renaming the variable to be sure there were no collisions with other includes, this didn’t work.
Then, I changed from using a jsp file as the include jsp to using a jspf.

An interesting think about this compile error, if I make ANY change in the editor and save/build it, then the error disappears until I close the editor and reopen it.

2) When I deploy and run under Tomcat, I get the error
sc is already defined in _jspService(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)

I am running MyEclipse 3.0 build 200406192000 and Tomcat 5.0.27 (I have tried 4.1.30 as well)

Here is a snippet from the jsp:

<%@include file=”pageSetup.jspf” %>
<%@include file=”htmlHeader.jsp” %>
<%
Boolean changeFlag = (Boolean)session.getAttribute(sc.CHANGE_FLAG_ATTR);
boolean isChange = changeFlag != null;

//This is used for the locationDrill.jsp & equipmentDrill.jsp
request.setAttribute(sc.FIX_LOC_ATTR, new Boolean(false));
request.setAttribute(sc.FIX_EQUIP_ATTR, new Boolean(true));
…

Here is the pageSetup.jspf:

<%@page
import=”java.util.*,vtam.manager.*,vtam.dataobject.*,vtam.servlet.*”
%>
<%
// use for short reference to (static) shared constants
SharedConstants sc = null;

// use for short reference to (static) helper methods
BaseServlet bs = null;

// messages about database operations
String errMsg = (String)request.getAttribute(sc2.ERR_MSG_ATTR);
String updtMsg = (String)request.getAttribute(sc2.UPDT_MSG_ATTR);

// use this for formatting dates
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(sc2.DF_DISP_PTRN);

// most pages will make use of at least one iterator
Iterator iter;

// make sure they are logged in
if(!request.getRequestURI().endsWith(sc2.LOGIN_PAGE))
{
if(session.getAttribute(sc2.USER_ATTR) == null) {
response.sendRedirect(sc2.LOGIN_PAGE);
return;
}
}
%>

[Riyad Kalla]

I wonder of the jasper 2 compiler is already generating a variable named “sc” in the page when it converts it to a servlet… can you try and comment our your line “SharedConsants sc = null” and instead have a line “System.out.println(sc);” and deploy it and see if it prints anything out?

If Tomcat is giving you a problem here too I’m not sure that this is a ME issue… you may just want to rename it to “sharedConstants” or something like that?

[Donald Scott]

I tried renaming it to sc_ and sc2, sc3. I don’t think it is an actual collision.
The ME issue is the compile error “Duplicate local variable sc”. I am able to get the jsp to compile by editing the file and saving/building it. I then deploy it to Tomcat and when I access the page, I get a compiler error from Tomcat saying that the sc variable is already defined. I can’t imagine they are not the same error.

Here is something else that is interesting. My application has 2 jsps prior to the one with the error. All three jsps include the pageSetup.jsp, but only the third page has the problem.

[Riyad Kalla]

Do you define a variable “sc” any other place in your project? Maybe in that pageSetup.jsp page? Try renaming that and see if the problem goes away.

[Donald Scott]

The variable sc is defined only in the pageSetup.jsp.
I renamed it again to sc2 (I have tried renaming it to sc2, sc3, sc_). This time the MyEclipse error “Duplicate Local Variable” went away, so I reverted to using the sc variable. The MyEclipse error did not return, however, the same error in Tomcat exists where it says
“sc is already defined in _jspService(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)”

I’m confused as to why the MyEclipse error would magically stop appearing.
I’m quite sure that these 2 errors are related and any additional help would be appreciated.

[Riyad Kalla]

don,
I have tried this locally many different ways and cannot reproduce the problem. I would suggest you search your entire project for the string ” sc ” and see where you are defining that variable, I bet its more place than one.

[Donald Scott]

I found the problem.
My jsp was including the pageSetup.jsp and then later in the file it was including another jsp that was including the pageSetup.jsp. I imported the code into WSAD and it identified the two import statements. Maybe MyEclipse should do something like this as well.

Thanks

[Riyad Kalla]

That is a good suggestion, I will send it along.

I’m glad you got it figured out.

[Author]

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