Question

JSP pages retaining old values (Tomcat 5.5)?

Asked by: Bydlo52

Hello,

I recently upgraded from Tomcat 5.5.9 to 5.5.27. I must have messed something in the config up, because now I am having a bit of a problem. These pages use an HTML to PDF converter product called "PD4ML".

I load page #1 with certain query params. All is good.
I load page #2 with different query params. All is good.
I load page #1 with its original params. The parameters from page #2 are now there!

If I make any changes to the source code, then the application resets, and the page request is fine. Same thing if I restart the server.

I have done some text file logging to make sure that the actual "header_file" variable has the correct query parameter data. It does. It seems that the pd4ml tag line: watermarkUrl="<%=header_file%>", is what is retaining the old value. Do these get compiled and stored somewhere? What do I have to change to make sure that this value is "fresh" with every request?

Thank you! If you need more information, I will be happy to provide it!

<%@ taglib uri="/WEB-INF/tlds/pd4ml.tld"  prefix="pd4ml" %>
<%@page import="java.text.*"%>
<%@page import="java.net.*" %>
<%@page contentType="text/html; charset=ISO8859_1"%>
<%//Page Info
 
	String level1 = request.getParameter("level1");
	String level2 = request.getParameter("level2");
	
	String header_file = "serverimages/src/jsp/header.jsp";
   	header_file = header_file + "?title1=" + level1;
	header_file = header_file + "&title2=" + level2;
	header_file = "http://tomcat.hmccentral.com/pd4ml/"+header_file;
	
%>
<pd4ml:transform
      screenWidth="1000"
      pageFormat="LETTER"
      pageOrientation="landscape"
      pageInsets="10,10,10,10,points"
	  enableImageSplit="false"
	  adjustScreenWidth="true"	
	  inline="false"
	  url="http://www.hmccentral.com"
 	  fileName="myfile.pdf"
	  enable="true"
>
<pd4ml:header
	  areaHeight="55"
	  watermarkUrl="<%=header_file%>"
	  watermarkOpacity="50"
	  watermarkBounds="0,0,792,55"  
>&nbsp;
</pd4ml:header>
</pd4ml:transform>

                                  
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Asked On
2009-05-29 at 04:53:09ID24447953
Tags

Tomcat JSP pd4ml

Topics

Apache Tomcat Application Server

,

Java Server Pages (JSP)

Participating Experts
1
Points
500
Comments
6

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Answers

 

by: MuraliKanthPosted on 2009-05-29 at 10:32:15ID: 24504463

just try deleting the catalina folder under the work directory  of ur tomcat also remove the temp folder  contents under tomcat

 

by: Bydlo52Posted on 2009-05-29 at 10:58:37ID: 24504652

Just tried doing that. It works for the first pass (clears out the working code), but then it gets rebuilt and the problem remains ...

 

by: MuraliKanthPosted on 2009-05-29 at 11:16:23ID: 24504813

are you using different parameter names in page 1 and 2?

 String level1 = request.getParameter("level1");
        String level2 = request.getParameter("level2");

level1 and level2 should not be there in te other page and it should be unique/

 

by: Bydlo52Posted on 2009-05-29 at 11:34:26ID: 24504962

Sorry, that's a rather unfortunate typo on my part :-(

There is only "page #1". That is, "page #2" should read "page #1". It is the same page being called with two different sets of query parameters.

The variables in the page are changing alright, its the "watermarkUrl="<%=header_file%>" that never seems to be updated with the new value of "header_file".

 

by: MuraliKanthPosted on 2009-05-30 at 21:12:16ID: 24511408

i'm rather confused now, do you have problem with the jsp or with pd4ml:header?

by seeing ur code it looks to me header_file is more or less hard coded except the level 1 and level 2 values. if you get the correct values in those 2 then it should work fine. If you still get the correct header_file value and pd4xml:header is not updated with the new value then try setting the cache to false and make it request new page every time.

response.setHeader("Cache-Control","no-cache");
response.setHeader("Pragma","no-cache");
response.setDateHeader ("Expires", 0);

-Murali*

 

by: Bydlo52Posted on 2009-06-01 at 05:54:37ID: 24516936

Yeah, tried setting the cache headers as well ... nothing doing.  

I'm beginning to suspect it may be an issue with the pd4ml library. I ended up coding around it, as I needed to get something working.

Thanks for the help, though. I will award points anyway.

- Clay

20120131-EE-VQP-002

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