How to resolve request methos 'POST' not supported? - spring

Question

I want to design a quick registration page which is placed at the footer when I submit the field, It is showing some error "Request method POST not supported". Someone, please help me to come out of this error.
I have modified the attribute of the form commandName as modelAttribute, but still, the error exists.
This is jsp front end.
<%# tag body-content="empty" trimDirectiveWhitespaces="true"%>
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%# taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<c:url value="/setSubscribe" var="subscribe"></c:url>
<form:form action="${subscribe}" method="post" modelAttribute="subscribeForm">
<input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}"/>
<label class="form-check-label radio-inline">
<input type="radio" class="form-check-input" value="gender" name="gender" value="Male"/> Male
</label>
<label class="form-check-label radio-inline">
<input type="radio" class="form-check-input" value="gender" name="gender" value="Female"/> Female
</label>
<br></br>
<div class="row">
<div class="col-sm-3">
<input class="form-control" name="firstName" placeholder="First Name"></input>
</div>
<div class="col-sm-3">
<input class="form-control" name="lastName" placeholder="Last Name"></input>
</div>
<div class="col-sm-3">
<input class="form-control" name="email" placeholder="Your Email Address"></input>
</div>
<div class="col-sm-3">
<button type="submit" class="btn btn-primary">SUBSCRIBE</button>
</div>
</div>
</form:form>
Here is my controller.
#RequestMapping(value = "/setSubscribe", method = RequestMethod.POST)
private String doSubscribe(#ModelAttribute("subscribeForm") final SubscribeForm form)
{
final RegisterData registerData = new RegisterData();
registerData.setFirstName(form.getFirstName());
registerData.setLastName(form.getLastName());
registerData.setSex(form.getGender());
registerData.setLogin(form.getEmail());
final CerCustomerFacadeImpl customerFacadeImpl = new CerCustomerFacadeImpl();
try
{
customerFacadeImpl.newCerRegister(registerData, true);
}
catch (final Exception e)
{
e.printStackTrace();
}
return "";
}
It should have to behave according to the business which has been mentioned in the controller.

Answer 1

Write your controller method with #ResponseBody annotation and consumes property of #RequestMapping annotation, as following:
#RequestMapping(value = "/setSubscribe", method = RequestMethod.POST, consumes = "application/json")
#ResponseBody
private String doSubscribe(#ModelAttribute("subscribeForm") final SubscribeForm form)
{
return "";
}