Hello, I was wondering if someone might have insight into the following problem:
I have a struts-based application to which I have added a sub-application. When I try
to directly access a .jsp file that belongs to the sub-application and has an
<html:form> tag in it, I receive the following exception:
javax.servlet.jsp.JspException: Cannot retrieve mapping for action /doSomething at
org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:828) at
org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:528)
..where the action "doSomething" is defined in the sub-application's struts-config.xml
file.
By looking at the tag library source code and doing some tests, I've discovered that
the the cause of the problem might be here (the first few lines of the lookup method
of FormTag):
appConfig = (ApplicationConfig)
pageContext.getRequest().getAttribute(Action.APPLICATION_KEY);
if (appConfig == null) { // Backwards compatibility hack
appConfig = (ApplicationConfig)
pageContext.getServletContext().getAttribute(Action.APPLICATION_KEY);
}
It appears that the "backwards compatibility hack" is invoked, and the application
config object is retrieved from the servlet context, rather than the request. Because
the sub-application's config object is located under the key
"Action.APPLICATION_KEY+"/subapplicationname" in the servlet context, the config
object for the main application is retrieved, and consequently, the mapping for the
action cannot be found. If this .jsp file is forwarded to by an action, however, the
correct config object is retrieved from the request, and the page loads without
exceptions.
My question is, am I misunderstanding something? Or is there no support for this kind
of operation? (meaning, just typing the URL of such a .jsp into a browser) Any
suggestions would be appreciated.
Thanks,
Vlad
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