Editing Jakarta Server Pages (section)

=== XML-compliant JSP ===

JSP pages may also be written in fully valid XML syntax.<ref>{{cite web|url=https://docs.oracle.com/cd/E19316-01/819-3669/6n5sg7b3b/index.html|title=The Java EE 5 Tutorial, Chapter 6 JavaServer Pages Documents|publisher=oracle.com|access-date=2022-07-27}}</ref> Such JSP files commonly use the alternative <code>.jspx</code> file extension, which usually causes the application server to validate the XML syntax.

Since the usual JSP syntax <code>&lt;% ... %&gt;</code> is not valid in XML, a developer must use alternative tags provided by JSP. For example, the common <code>&lt;%@ page .. %&gt;</code> directive may instead be written as a <code>&lt;jsp:directive.page .. /&gt;</code> tag, and tag libraries are imported using [[XML namespace]]s, instead of the usual <code>&lt;%@ taglib .. %&gt;</code> tag.