How to concatenate a JSTL variable with JSP id?

Question

<%@attribute name="myid" required="true"%>
<input type="text" id="<%=it.java.class.utils.ParameterPortlet.%>${myid}" />

I want to concatenate <%=java.class%> with ${myid} to get it.java.class.utils.ParameterPortlet.myid. But after deploying my project I get this error:

ERROR [http-bio-8080-exec-86][PortletRequestDispatcherImpl:137] org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JasperException: Unable to compile class for JSP

In it.java.class.utils.ParameterPortlet I have myClass.java that contains a list of strings:

public final class myClass {
    public static final String INPUTNAMEID = "myname";
    public static final String INPUTCITYID = "mycity";
    public static final String INPUTID = "myid";
}

So what I want to do is to change dynamically the "myid" <%=it.java.class.utils.ParameterPortlet.myid%> using JSTL to myinput, myselect, myid, etc..

What I did wrong?
Any help is appreciated. Thank you!

You may find http://stackoverflow.com/questions/122254/accessing-constants-in-jsp-without-scriptlet uselful. — Kojotak, Feb 20 '14 at 08:27

score 1 · Answer 1 · answered Feb 19 '14 at 10:35

1

Use the class, which will have its toString method invoked:

<input type="text" id="<%=it.java.class.utils.ParametriPortlet.class%>${myid}" />

answered Feb 19 '14 at 10:35

Kevin Bowersox

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Thank you so much Kevin. I tried but doesn't work. Please see my last edit to the question. Thank you! – Mustapha Aoussar Feb 19 '14 at 11:00

How to concatenate a JSTL variable with JSP id?

1 Answers1