Convert integer value to string using JSTL/EL

Question

How do I correct this statement:

${model.myHashtable[model.data.id]}.

myHashtable is defined as

Hashtable

        

Answer 1

${''.concat(model.data.id)} works for me,you may try it.

Answer 2

Set it as body of <c:set>. It will implicitly be converted to String.

<c:set var="idAsString">${model.data.id}</c:set>
<c:out value="${model.myHashtable[idAsString]}" />

Answer 3

you can use org.apache.commons.collections4.map.CaseInsensitiveMap both String "1" and int 1 are the same key;

Answer 4

In JSP file:

<%@ taglib prefix = "fmt" uri = "http://java.sun.com/jsp/jstl/fmt" %>

<!-- lines of code... -->

<fmt:parseNumber var = "id_value" type = "number" value = "${model.data.id}" />
<c:out value = "${id_value}" />