jasper.jar has no source attachment TagFileProcessor.class when using a JSP tag

Question

I'm having a problem loading JSP tag within my JSP pages.

I include the taglibs like so:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="tags" tagdir="/WEB-INF/tags"%>

and include my tag in the page like so:

<tags:company-icons companyID="${company.id}" />

When I attempt to go to the page with this tag line in I get the following:

The JAR file /Applications/apache-tomcat-7.0.53/lib/jasper.jar has no source attachment.
You can attach the source by clicking Attach Source below:

If I attach the jasper.jar I get the following:

The source attachment does not contain the source for the file TagFileProcessor.class.

I have unzipped the jasper.jar file and there is a TagFileProcessor.class file in there but no .java which should be fine.

This has been working fine for a number of months and suddenly stopped working with no explanation. Any ideas?

Answer 1

Turns out I needed the following at the top of my tab:

<%@ tag language="java" pageEncoding="US-ASCII"%>

Whereas I had:

<%@ tag language="java" pageEncoding="ISO-8859-1"%>