How to read and parse xml string stored in request via jstl jsp

Question

I am creating an mvc application, in controller (servlet), I am populating a request variable and then trying to read and show it in view (jsp) via foreach jstl tags. The problem is that I don't know how to read xml from session and then parse it and show attributes and elements in jsp page. Below is the code that I have.

In servlet, set request attribute:

request.setAttribute("XMLDocument", xmlResultStr);

This is a sample xml that can be stored in xmlResultStr.

<?xml version="1.0" encoding="UTF-8"?>
<SearchResults>
    <result url="http://haacked.com/" totalcount="14">
        <keyword count="9">start</keyword>
        <keyword count="5">end</keyword>
    </result>
    <result url="http://feeds.haacked.com/haacked" totalcount="14">
        <keyword count="9">start</keyword>
        <keyword count="5">end</keyword>
    </result>
</SearchResults>

In jsp page, I am using this code but completely without luck, I am searching for many hours and fully stuck on this:

<x:parse xml="${XMLDocument}" var="xml"/>

                <c:out value="${xml}" />

                <x:forEach select="$xml/SearchResults/result" var="item">
                    <c:set var="elementName" value="url"/> 
<x:out select="$item/*[name()=$elementName]" />
                    <h3><a href="<x:out select="$item/*[name()=$elementName]" />" target="_blank"><x:out select="$item/*[name()=$elementName]" /></a></h3>
                    <p>
                        <%-- somehow display keywords list here, like shown below --%>
                    </p>
                    <hr />
                </x:forEach>

What I want is this:

  <h3><a href="http://haacked.com/" target="_blank">http://haacked.com/</a></h3>
            <p>
                (start - 9, end - 5)
            </p>
            <hr />

JB Nizet · Accepted Answer · 2013-05-12 13:24:08Z

2

My suggestion: avoid storing an XML string in the session and trying to parse it in the JSP.

Adopt the MVC principles: parse the document using Java code, before storing it in the session. Transform the document into a Java bean and store this Java bean in the session instead of storing the XML string.

Then use the JSTL core taglib and the JSP EL in the JSP to display the information stored in this Java Bean.

answered May 12, 2013 at 13:24

JB Nizet

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