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javajspjstl

Evaluate list.contains string in JSTL

I need to hide an element if certain values are present in the JSP

The values are stored in a List so I tried:

<c:if test="${  mylist.contains( myValue ) }">style='display:none;'</c:if>

But, it doesn't work.

How can I evaluate if a list contains a value in JSTL, the list and the values are strings.

Solution

  • Sadly, I think that JSTL doesn't support anything but an iteration through all elements to figure this out. In the past, I've used the forEach method in the core tag library:

    <c:set var="contains" value="false" />
<c:forEach var="item" items="${myList}">
  <c:if test="${item eq myValue}">
    <c:set var="contains" value="true" />
  </c:if>
</c:forEach>

    After this runs, ${contains} will be equal to "true" if myList contained myValue.