Question

could you help please?, how I can read the variable objd in a <% … %> Assigned in the foreach?

            <c:forEach var="objd" items="${beanDreqproducto}">
                <% 
                Gson j = new Gson();
                String data = j.toJson(objd);
                %>

                console.log("${objd.cantidad}, data: "+'${data}');
            </c:forEach>

Answer 1

The ${} basically translates to PageContext#findAttribute(). So, this should do:

<%
    Object objd = pageContext.findAttribute("objd");
    // ...
%>

Note that you should set data in page scope as well in order to get ${data} to work:

<%
    // ...
    pageContext.setAttribute("data", data);
%>

See also:

• Our EL wiki page

---

Unrelated to the concrete question, this approach is ultimately bad. You should choose to use either JSTL/EL or scriptlets exclusively, not both. If you prefer JSTL/EL, just create a custom EL function to do the desired job, so that you can end up something like as follows:

<c:forEach var="objd" items="${beanDreqproducto}">
    console.log("${objd.cantidad}, data: ${my:toJson(objd)}");
</c:forEach>

Our EL wiki page contains a section how to create EL functions.