How to access to RESTController through a controller? - rest

Question

I am using Spring.
The method in my RESTController is this,
http://localhost:8080/delivery-api/training/submit. It is able to save hard code values into database.
This is part of my html form, it can be open up using this URL: http://localhost:8080/delivery-web/training/apply.
<form th:object="${applyForm}" class="form-horizontal" role="form" method="post" action="http://localhost:8080/delivery-api/training/submit" >
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right"
for="form-field-1" > Country </label>
<div class="col-sm-9">
<input type="text" id="form-field-1" placeholder="Country"
class="col-xs-10 col-sm-7" th:field="*{country}" />
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right"
for="form-field-1"> Fee </label>
<div class="col-sm-9">
<input type="text" id="form-field-1" th:field="*{Fee}" class="col-xs-10 col-sm-7" />
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right"
for="form-field-1"> Start Date </label>
<div class="col-sm-9">
<input type="date" id="form-field-1" th:field="*{startDate}"
class="col-xs-10 col-sm-7" />
</div>
</div>
<div class="form-group">
<label class="col-sm-3 control-label no-padding-right"
for="form-field-1">End Date </label>
<div class="col-sm-9">
<input type="date" id="form-field-1" th:field="*{endDate}"
class="col-xs-10 col-sm-7" />
</div>
</div>
<br> <br>
<button class="btn btn-info" type="submit">
<i class="ace-icon fa fa-check bigger-110"></i> Submit
</button>
</div>
</div>
</form>
When I click on submit, it can be directed to http://localhost:8080/delivery-api/training/submit and insert the hard coded values into database, but it did not direct to my application-form.html page after that.
My controller
#PostMapping(value = "/apply")
public String apply(#Valid #ModelAttribute("applyForm") DeliveryApplicationForm applyForm, BindingResult errors, Model model) {
model.addAttribute("applyForm", applyForm);
return VIEW_PATH + "application-form";
}
I would like to render html page and also pass data from my form to RESTController method through a controller after I click on the submit button in my html page.
May I know how I can do it?