August 2002
Intermediate to advanced
688 pages
23h
English
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Writing JSP Pages as XML Documents
An important part of JSP 1.2 is the definition of an XML syntax for JSP. The XML syntax is primarily intended for validation and authoring tools, but it may also be of interest if you use an XML editor to develop your JSP pages. A JSP 1.2-compliant container must accept files in both the old, classic JSP 1.1 format and the new XML format, formally called a JSP Document.
A JSP Document is a namespace-aware XML document with a root element
named <jsp:root> that defines the namespaces
for the standard JSP elements and all tag libraries used in the page.
Example 16-10 shows
an
example.
Example 16-10. A JSP Document (jspdocument.jsp)
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:c="http://java.sun.com/jstl/core" version="1.2"> <jsp:directive.page contentType="text/html" /> <html> <head> <title>A JSP Document</title> </head> <body bgcolor="white"> <h1>All Request Parameters</h1> <ul> <c:forEach items="${paramValues}" var="current"> <li> <c:out value="${current.key}" />: <c:forEach items="${current.value}" var="parValue"> <br/> <c:out value="${parValue}" /> </c:forEach> </li> </c:forEach> </ul> </body> </html> </jsp:root>
The <jsp:root>
element has a mandatory version attribute, used to
declare the version of the JSP specification.
xmlns attributes declare the tag libraries used in
the page. If standard actions are used, a library with the
xmlns attribute value
http://java.sun.com/JSP/Page must be used, as in
Example 16-10. JSTL and custom ...
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