Display All Request Scope Parameters And Model Attributes Inside JSP Page

 Reference: https://www.stackextend.com/java/jstl-display-all-request-scope-parameters-and-model-attributes-inside-jsp-page/

So the Following trick gives you the ability to display all request scope parameters and model attributes inside JSP page by adding this simple code : 

<ul>
    <c:forEach items="${requestScope}" var="p">
            <li>${p.key} -> ${p.value}</li>
    </c:forEach>
</ul>

After refreshing the page you will see all parameters displayed with their values.