Re: pageContext.getException() always null
Seems to me like a pure Tomcat-issue. Downloaded and tested a couple of TC versions (5.0.28, 5.0.30 beta). Same result: pageContext.getException() always returns null. I then built Tomcat on my own (via http://jakarta.apache.org/tomcat/tomcat-5.0-doc/build.xml) and everything worked fine there. Looking at the source of class PageContextImpl made clear, that the version has changed. The new implementation of method getException() now uses JspRuntimeLibrary.getThrowable(request) instead of request.getAttribute(PageContext.EXCEPTION) This comes down to returning the request attribute javax.servlet.error.exception instead of javax.servlet.jsp.jspException. So, if you use code like Throwable error = (Throwable) request.getAttribute(javax.servlet.error.exception) instead of pageContext.getException() you should be fine. However, looks like a TC bug to me, that only occurs if you setup your error pages by the error-tag within web.xml (not by using the page directive errorPage). pageContext.getException() only returns what is saved under attribute javax.servlet.jsp.jspException. But this attribute is not set, if you're throwing from a Servlet, for instance (as with Struts etc.). Have fun, Konrad - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: pageContext.getException() always null
Konrad Bernstein wrote: However, looks like a TC bug to me, that only occurs if you setup your error pages by the error-tag within web.xml (not by using the page directive errorPage). pageContext.getException() only returns what is saved under attribute javax.servlet.jsp.jspException. But this attribute is not set, if you're throwing from a Servlet, for instance (as with Struts etc.). This is http://issues.apache.org/bugzilla/show_bug.cgi?id=31659 and is fixed in 5.5.9+ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
pageContext.getException() always null
Hi,
I have a rather strange problem with handling an exception within a custom
jsp tag.
The problem is, that pageContext.getException() always returns null.
This is the case within the tag's code, but also witin a Scriptlet within
the JSP.
However, the variable 'exception' itself is properly set.
My error.jsp looks like this:
[EMAIL PROTECTED] isErrorPage=true %
%@ taglib uri=/WEB-INF/custom.tld prefix=custom %
%
System.out.println(Exception = + exception);
System.out.println(exPage = + pageContext.getException());
%
HTML
HEAD
titleError/title
/HEAD
body
H1Error occured/H1
custom:errortag/
/body
/html
The tag class has code like this:
private Exception getTerribleException() {
if (pageContext.getException() == null) {
System.out.println(pageContext has null exception);
return null;
}
...
}
Well, the output is as mentioned above: only the variable 'exception' within
the JSP can be successfully accessed. Retrieving the exception from the
pageContext always returns null.
Exception = javax.servlet.ServletException: This is my self thrown
exception.
exPage = null
pageContext has null exception
As far as I know, for all error pages ([EMAIL PROTECTED] isErrorPage=true
%),
the counterpart for the implicit variable 'exception' of a JSP is
pageContext.getException().
However, something seems to go wrong.
I'm using JBoss 3.2.26 with integrated Tomcat. I also tried tomcat
standalone (5.0.18), same result.
Help greatly appreciated,
Konrad
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