I'm trying to come up with a workaround for the lack of any method in the SimpleTagSupport API for getting the current Servlet Request. I read a hint on a website that the EL expression evaluation API can be used, and I'm trying to get it to work using a variation of the following approach. Is what I'm trying even possible?
I've solved it! There was a servlet-2.3.jar and a jsp-api-2.0.jar file on my project classpath, and the compiler was loading the PageContext from the servlet jar, which seems to be incompatible with the jsp-api JspContext. Thanks for your help.
But I have one basic doubt. How did this approach work? PageContext is a child of JspContext. And PageContext has extra methods such as getRequest() which are not defined for JspContext. If I cast an object of JspContext into PageContext and access getRequest from this instance, shouldn't I get a run time exception? How can the object of JspContext access a method which it has not defined? Is this some kind of a new trick?