Spring request parameter unique within call - spring-mvc

Question

Massive EDIT
Let's say I have two differents controllers. One that renders the View and one that renders the <jsp:include> tags.
The ViewController :
#Controller
public class ViewController {
#Resource
private VehicleCatalogAPIService vehicleCatalogAPIService;
#RequestMapping("/en/new/{organizationUnitId}")
public String view(ModelMap modelMap, Locale locale,
#PathVariable Integer organizationUnitId,) {
Vehicles vehicles = vehicleCatalogAPIService.getVehicule(organizationUnitId);
modelMap.put("vehicles", vehicles);
return "/catalog/" + view;
}
}
The IncludeController:
#Controller
public class IncludeController{
#Resource
VehicleCatalogAPIService vehicleCatalogAPIService;
#RequestMapping(value = "/fragment/test", produces = "text/html")
public String test(ModelMap modelMap,
#RequestParam("view") String view,
#RequestParam("test") String test,
#RequestParam("vehicleId") String vehicleId,
Locale locale) {
Vehicle particularVehicle = vehicleCatalogAPIService.get(vehicleId);
modelMap.put("vehicle", vehicle);
return "/catalog/vehicle/fragments/" + view;
}
#RequestMapping(value = "/fragment/test2", produces = "text/html")
public String test(ModelMap modelMap,
#RequestParam("test") String test,
#RequestParam("view") String view,
Locale locale) {
return "/catalog/vehicle/fragments/" + view;
}
}
I hit the page in the browser : http://example.com/en/new
The ViewController is called and returns the the jsp page that has to be rendered, in this case /catalog/listing.jsp. The JSP looks like this :
<jsp:useBean id="vehicles" type="java.util.List<com.sm360.auto.webauto.webapplib.bean.display.VehicleDisplayBean>" scope="request"/>
<h1> LISTING JSP </h1>
<div>
<c:forEach items="${vehicles}" var="vehicle" begin="${k.index}" end="${k.index + k.step-1}">
<div class="c-item-out">
<content:sheet-new-vehicule vehicle="${vehicle}" isCompact="true" hasCompared="true" />
</div>
</c:forEach>
</div>
<jsp:include page="/fragment/test">
<jsp:param name="view" value="view1"/>
<jsp:param name="vehicle1" value="vehicle1"/>
<jsp:param name="test" value="test1"/>
</jsp:include>
That include now calls the IncludeController with 3 parameters : view, vehicleId and test. The proper method is invoked and the correct view is returned (view1).
The view1 contains another include :
<jsp:useBean id="vehicle" type="com.sm360.auto.webauto.webapplib.bean.display.VehicleDisplayBean" scope="request"/>
<h1> view 1 </h1>
<div>
<h2>${vehicle.name}
</div>
<jsp:include page="/fragment/test2">
<jsp:param name="view" value="view2"/>
<jsp:param name="test" value="test2"/>
</jsp:include>
In that second call, the view parameter will be "view2,view1" and the test parameter will be "test2, test1".
I would like that second include to have its own values of the parameters it passes to the controller, not a merge from the other call.
EDIT :
Following this diagram, when a <jsp:include> is met during the rendering of the view, does the process return to the Front Controller and re-Delegate the request to the Controller specified in the include tag with the same request with updated parameters?
Is it possible to have a new set of fresh parameters?

Answer 1

A long shot: could you just remove the view entry from the model before setting the next? I'm having a common Spring controller method in mind, please post your code for clarification.
#RequestMapping("/helloWorld")
public String helloWorld(Model model) {
model.remove("view");
model.addAttribute("view", "foobar");
return "helloWorld";
}