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POHow can I loop through collections of strings but not strings with commas in JSTL/JSP?
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  1. POHow can I loop through collections of strings but not strings with commas in JSTL/JSP?
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    copied!<p>Here is an excerpt from a jsp file I'm working with:</p> <pre><code>&lt;%@ page session="false" %&gt;&lt;%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %&gt;&lt;%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %&gt; ... &lt;c:forEach var="attr" items="${auth.principal.attributes}" &gt; &lt;c:forEach var="attrVal" items="${attr.value}"&gt; &lt;attribute name="${fn:escapeXml(attr.key)}" value="${fn:escapeXml(attrVal)}"/&gt; &lt;/c:forEach&gt; &lt;/c:forEach&gt; ... </code></pre> <p>Each of the attributes may be either a string or a collection of strings. This code works fine most of the time, but if one of the string values contains a comma then it gets split apart into two attributes.</p> <p>What I'm expecting is output like the following:</p> <pre><code>... &lt;attribute name="FirstName" value="Adam"/&gt; &lt;attribute name="LastName" value="Franco"/&gt; &lt;attribute name="DisplayName" value="Franco, Adam S."/&gt; &lt;attribute name="Status" value="Staff"/&gt; &lt;attribute name="MemberOf" value="CN=All Staff,OU=Groups,DC=example,DC=edu"/&gt; &lt;attribute name="MemberOf" value="CN=Admins,OU=Groups,DC=example,DC=edu"/&gt; ... </code></pre> <p>What I get instead is:</p> <pre><code>... &lt;attribute name="FirstName" value="Adam"/&gt; &lt;attribute name="LastName" value="Franco"/&gt; &lt;attribute name="DisplayName" value="Franco"/&gt; &lt;attribute name="DisplayName" value=" Adam S."/&gt; &lt;attribute name="Status" value="Staff"/&gt; &lt;attribute name="MemberOf" value="CN=All Staff,OU=Groups,DC=example,DC=edu"/&gt; &lt;attribute name="MemberOf" value="CN=Admins,OU=Groups,DC=example,DC=edu"/&gt; ... </code></pre> <p>I've verified that my "DisplayName" attribute is coming through to the from the back-end as a simple string just like FirstName and LastName, the only difference is that it happens to contain a comma. Here is a screen-shot of the the <code>principle.attributes</code> Map right before it gets returned to the JSP: <img src="https://i.stack.imgur.com/glPbN.png" alt="enter image description here"></p> <p>How can I differentiate between a string and a collection of strings in the JSP or prevent the <code>forEach</code> invocation from splitting strings appart on commas? </p>
 

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