Why is <c:forEach> not working with Ajax request in JSP Spring? - ajax

Question

I am fetching some data with a Ajax request in my main JSP page.
Snippet of main.jsp
function gu(){
$.get('/admin/getAllUsers', {}, function(data) {
console.log(data); // see below
$("#allUsersData").html(data);
});
}
In my Spring controller I add all the users to a different JSP page.
Snippet of MainController.java
#RequestMapping(value = "/admin/getAllUsers", method = RequestMethod.GET)
public String getAllUsers(Model model){
List<User> users = userRepository.findAll();
System.out.println(users.size()); // output: 3
model.addAttribute("allUsers", users);
return "data/all-users";
}
Now in all-users.jsp I have a <c:forEach> which is supposed to load all users in a html table:
<table class="table">
<thead>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Email</th>
<th>Date</th>
</tr>
</thead>
<tbody>
<c:if test="${not empty allUsers}">
<c:forEach items="${allUsers}" var="usr">
<tr>
<td>${usr.firstName}</td>
<td>${usr.lastName}</td>
<td>${usr.username}</td>
<td>${usr.creationDate}</td>
</tr>
</c:forEach>
</c:if>
</tbody>
</table>
However, when I add the html coming from the request to my main JSP page, an empty table is shown. When I log the result of the Ajax request I find that the user data is inserted in the all-users.jsp:
<c:if test="true">
<c:forEach items="[User{id=1, username='username1', firstName='John', lastName='Doe', roles=[Role{id=1, name='ROLE_USER'}], creationDate=2018-02-19T08:58:13.333}, User{id=2, username='username2', firstName='John2', lastName='Doe2', roles=[Role{id=3, name='ROLE_USER'}], creationDate=2018-02-19T08:58:13.471}]" var="usr">
<tr>
<td></td>
<td></td>
<td></td>
<td></td>
</tr>
</c:forEach>
</c:if>
Why is it happening that the data is loaded into the data JSP page, but not shown when appending it to the main JSP page?

Answer 1

Can you check, maybe you haven't included the core tag library in your JSP file.
You will do this by inserting the following Line at the top of your file.
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>