java - Spring mvc doesn't work post method in form -

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when started write application, form submited , createannotation method worked. doesn't work. why? way method executes in controller, , post doesn't.

@controller @requestmapping("/annotation") public class annotationcontroller {      @requestmapping(value = "/new", method = requestmethod.post)     public string createannotation(@modelattribute annotation annotation, bindingresult result){         annotationservice.create(annotation);         return "redirect:/annotation/annotations.htm";     }  } 
<form action="${pagecontext.request.contextpath}/annotation/new" method="post">   <div class="form-group">     <label for="text">annotation name</label>     <input type="text" class="form-control" id="text" placeholder="annotation name" name="name"/>   </div>   <div class="form-group">     <label for="date">date:</label>     <input type="date" class="form-control" id="date" placeholder="date" name="date"/>   </div>   <div class="form-group">     <label for="comment">description:</label>     <textarea class="form-control" rows="5" id="comment" name="description"></textarea>   </div>   <input type="hidden" name="profil.id" value="1"/>   <input type="submit" class="btn btn-default" value="submit"/> </form>


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