HOWTO access request object in an invocation of a custom tag function in JSPs

Question

In JSP pages I am using a custom JSTL function, which has the request object as one of the inputs.

Currently I am using the following way of accesing it in my JSP.

<c:if test="${custom:isVisitorFromNorthAmerica(request)}">
...
</c:if>

The tag function definition is as follows,

<function>
    <name>isVisitorFromNorthAmerica</name>
    <function-class>com.x.y.JspELFunctions</function-class>
    <function-signature>
        java.lang.Boolean isVisitorFromNorthAmerica(javax.servlet.http.HttpServletRequest)
    </function-signature>
</function>

Inside the function definition of custom#isVisitorFromNorthAmerica the request object is null. I am not sure how to access the request object then, without resorting to scriptlets.

I made sure that the request object being sent to the custom tag is not null, because I added a scriptlet just before the custom function invocation & it is set properly.

Answer 1

I found the answer. I need to access it using pageContext. So instead of calling it like so,

<c:if test="${custom:isVisitorFromNorthAmerica(request)}">

I need to call it like so,

<c:if test="${custom:isVisitorFromNorthAmerica(pageContext.request)}">