Question

I am using Spring MVC application and I have a JSP with following code.

<c:choose>
            <c:when test="${type eq 'school'}">
            <h1 class="title">${schoolVO.name}</h1>
            </c:when>

            <c:when test="${type eq 'college'}">
            <h1 class="title">${collegeVO.name}</h1>

            </c:when>

            <c:when test="${type eq 'tution'}">
             <h1 class="title">${tutionVO.name}</h1>
            </c:when>
            ...
            ..
            ..
            Many other types...

</c:choose>

This jsp is called when there is a method in controller which depend on the type
set the model attribute .

If the type is school , it puts

modelMap.addAttribute("schoolVO", school);

if college then

modelMap.addAttribute("collegeVO", college);

Similarly others..

Now i want to remove this <c:when> conditions in jsp.

Now depending upon the type I want to add one model attribute and put either
schoolVO or collgeVO like

modelMap.addAttribute("typeVO", "schoolVO");

So that I did not need to use if <c:when> conditions in jsp .
And I want to use something like

${{typeVO}.name}

But this gives me error

 contains invalid expression(s): javax.el.ELException: Error Parsing:

How i can achieve this?
Thanks in advance.

P.S. I could not get the proper title for my question. Please change it if there is something appropriate i can put.

Answer 1

You can complicate yourself having lots of different attributes set in the request. AFAIK, it would be better to have a single attribute that handles the name you want to print:

modelMap.addAttribute("institutionName", school.getName());
//or
modelMap.addAttribute("institutionName", college.getName());

That contains the title you will print, then in your JSP you don’t have use any validation, just write

<h1 class="title">${institutionName}</h1>