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javajspjstl

Enum inside a JSP

Is there a way to use Enum values inside a JSP without using scriptlets.

e.g. 

package com.example;

public enum Direction {
    ASC,
    DESC
}

so in the JSP I want to do something like this

<c:if test="${foo.direction ==<% com.example.Direction.ASC %>}">...
Solution

  • You could implement the web-friendly text for a direction within the enum as a field:

    
<%@ page import="com.example.Direction" %>
...
<p>Direction is <%=foo.direction.getFriendlyName()%></p>
<% if (foo.direction == Direction.ASC) { %>
<p>That means you're going to heaven!</p>
<% } %>

    but that mixes the view and the model, although for simple uses it can be view-independent ("Ascending", "Descending", etc).

    Unless you don't like putting straight Java into your JSP pages, even when used for basic things like comparisons.