send data with Ajax to Spring Controller -

i have page jsp want send data using ajax controller . doesn t work .i got error in console : error 404 .

my controller :

 @requestmapping(value="/sendemail",method=requestmethod.post)    public void sendemail(){       }    @requestmapping(value="/sendemail",method=requestmethod.get)    public void sendemailget(){  } 

in page jsp :

<div class="row col-xs-10 col-md-6 form-group"> <!--              <textarea rows="5" class="form-control"></textarea> -->              <springform:textarea path="message" name="message" class="form-control" rows="5"/>            </div>             <div class="row">                <span class="col-xs-12 col-md-4">                 <a class="btn btn-info navbar-btn navbar-right" id="sendemail">envoyer email</a>                </span>             </div>   <script> $('#sendemail').click( function(){    $.ajax({           url:'/sendemail',           type:"post",           datatype:'json',           contenttype : "application/json; charset=utf-8",            success : function() {                      console.log("success: ");                       },            error : function() {                      console.log("error: ");                       },            done : function() {                      console.log("done");                       }         });        }); </script> 

i got error in browser console :

request url:http://localhost:8989/sendemail request method:post status code:404  remote address:[::1]:8989 referrer policy:no-referrer-when-downgrade response headers view source content-language:fr-fr content-type:application/json;charset=utf-8 date:thu, 14 sep 2017 04:33:30 gmt transfer-encoding:chunked request headers view source accept:application/json, text/javascript, */*; q=0.01 accept-encoding:gzip, deflate, br accept-language:fr-fr,fr;q=0.8,en-us;q=0.6,en;q=0.4 connection:keep-alive content-length:0 content-type:application/json; charset=utf-8 cookie:jsessionid=b40e408bbc4209d1cecc9336b3ad3ec1 host:localhost:8989 origin:http://localhost:8989 referer:http://localhost:8989/detail/1 user-agent:mozilla/5.0 (windows nt 10.0; win64; x64) applewebkit/537.36 (khtml, gecko) chrome/60.0.3112.113 safari/537.36 x-requested-with:xmlhttprequest 

like see didn t send thing controller , wanted start empty see if request reach controller , didn t, thank you.