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POHow to create a custom EL function to invoke a static method?
 

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  1. POHow to create a custom EL function to invoke a static method?
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    <p>Im new to JSF 2. My question is related to BalusC's answer to this question <a href="https://stackoverflow.com/q/5709381/614130">jsf2 ajax update parts based on request parameters</a> I tried the kickstart code BalusC posted and I encountered an EL parsing error:</p> <pre><code> /nameofpage.xhtml @12,64 rendered="#{bean.panels.contains('u1')}" Error Parsing: #{bean.panels.contains('u1')} </code></pre> <p>I guess that this is caused because I'm not running a Servlet 3.0 / EL 2.2 capable container with a /WEB-INF/web.xml declared as per Servlet 3.0 spec. I'm using Tomcat 6.</p> <p>BalusC suggested in his answer to create a custom EL function. But how do I accomplish this using a custom EL function? Or can this be fixed by just configuring certain parts of my project?</p> <p>Below is my <code>web.xml</code>:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"&gt; &lt;servlet&gt; &lt;servlet-name&gt;Faces Servlet&lt;/servlet-name&gt; &lt;servlet-class&gt;javax.faces.webapp.FacesServlet&lt;/servlet-class&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;Faces Servlet&lt;/servlet-name&gt; &lt;url-pattern&gt;*.jsf&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;context-param&gt; &lt;param-name&gt;javax.faces.PROJECT_STAGE&lt;/param-name&gt; &lt;param-value&gt;Development&lt;/param-value&gt; &lt;/context-param&gt; &lt;welcome-file-list&gt; &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt; &lt;welcome-file&gt;index.html&lt;/welcome-file&gt; &lt;/welcome-file-list&gt; &lt;/web-app&gt; </code></pre>
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