How to access at request attributes in JSP?

jsp jstl el
Martin picture Martin · Feb 6, 2011 · Viewed 128.1k times · Source

Currently I use:

<%
final String message = (String) request.getAttribute ("Error_Message");
%>

and then

<%= message %>

However I wonder if the same can be done with EL or JSTL instead of using a scriptlet.

Answer

Christoph Seibert picture Christoph Seibert · Feb 6, 2011

EL expression:

${requestScope.Error_Message}

There are several implicit objects in JSP EL. See Expression Language under the "Implicit Objects" heading.

Related questions

Evaluate empty or null JSTL c tags

How can I validate if a String is null or empty using the c tags of JSTL? I have a variable of name var1 and I can display it, but I want to add a comparator to validate it. <…

Read More
Use JSTL forEach loop's varStatus as an ID

I want to use the count from the JSTL forEach loop, but my code doesnt seem to work. <c:forEach items="${loopableObject}" var="theObject" varStatus="theCount"> <div id="divIDNo${theCount}"> </div> </c:forEach&…

Read More
EL access a map value by Integer key

I have a Map keyed by Integer. Using EL, how can I access a value by its key? Map<Integer, String> map = new HashMap<Integer, String>(); map.put(1, "One"); map.put(2, "Two"); map.put(3, "Three"); I …

Read More