tomcat7 and EL in a jsp page; pageContext.request.contextPath empty?

Question

My JSP page contains:

<script>
    var bt_wd40_appurl = "${pageContext.request.contextPath}";
</script>

view/source shows "" for the value. No errors I've found so far.

my web.xml specifies version 2.5.

Lungan

It will be empty if you deployed the webapp on ROOT. Sure that you did deploy it on a context path? Note that the context path doesn't contain the scheme/domain part of the URL, it's a domain-relative URL. – Freethinker

Oh, duh! IDEA did exactly that. Make an answer so I can accept? – Lungan

Answer 1

It will be empty if you deployed the webapp on ROOT. See also its javadoc (emphasis mine):

getContextPath

java.lang.String getContextPath()

Returns the portion of the request URI that indicates the context of the request. The context path always comes first in a request URI. The path starts with a "/" character but does not end with a "/" character. For servlets in the default (root) context, this method returns "". The container does not decode this string.

Are you sure that you did deploy it on a context path? Note that the context path doesn't contain the scheme/domain part of the URL, it's a domain-relative URL.

Freethinker