JSP tag file that either outputs its body or returns it in a variable

Question

I have a custom tag in a \".tag\" file that computes and outputs a value. Because I cannot post the code here, let\'s assume a simple example.

Content of file mytag.tag:

Answer 1

Ran into this same issue and found a way to this without a "hard-coded" variable name that has to match between .jsp and .tag.

<%@ taglib prefix="c"   uri="http://java.sun.com/jsp/jstl/core"%><%@ 
taglib prefix="s"       uri="http://www.springframework.org/tags" %>







    
        ${pageContext.request.setAttribute(var, someOutput)}
    
    
        ${someOutput}
    

This tag can be used in two ways:

<%-- Option 1: renders the output of the tag directly to the page --%>


<%-- Option 2: stores the output of the tag in variable called "result" and lets the caller render the output on his own --%>