CODEWITHSUNDEEP
jspjstlel
Neil McGuigan
Neil McGuigan

Reputation: 48236

How to access response header using JSP EL?

${response} is null

${pageContext.response} seems to belong to sitemesh filter.

I am trying to conditionally add the "manifest" attribute to the html tag depending on whether a response cache header is present or not.

UPDATE:

Brain-fart on my part. I was trying ${pageContext.response.header['Cache-Control']} while the correct way is ${pageContext.response.getHeader('Cache-Control')}

Upvotes: 3

Views: 7452

Answers (1)

alfreema
alfreema

Reputation: 1338

Here is a very straightforward example on accessing response headers: http://www.devmanuals.com/tutorials/java/jsp/getHeader.html

So I think these should both work:

<%
    pageContext.setAttribute("cacheHeader", response.getHeader("cacheHeaderIamLookingFor"));
%>

<c:if test="${!empty cacheHeader}">
    ... add your manifest stuff ..
</c:if>

I believe this should also work:

<c:if test="${!empty pageContext.response.getHeader('cacheHeaderIamLookingFor')}">
    ... add your manifest stuff ..
</c:if>

Upvotes: 3

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