java - Spring - @RequestBody blocks the requests? -

i new spring . previous search in google says can send json data spring controller using @requestbody , can data in controller.

but when used @requestbody , doesn't allow request controller .

function sendjson(){      var jsondata = {"name":"xxx","age":"20","hobby":"tv"};     /alert("json data : \n\n\n"+jsondata);      $.ajax({         type: 'post',         datatype: 'json',         url: contexpath + "/sender.html",         //datatype: "html",         //contenttype: "application/x-www-form-urlencoded; charset=utf-8",         contenttype: "application/json"         data : json.stringify(jsondata),         success: function(data, textstatus ){             alert("success");             $("#result").html(data.name+"data.age+" "+data.hobby);           },         error: function(xhr, textstatus, errorthrown){             //alert('request failed'+errorthrown);         }     }); } 

my controller ,

@requestmapping(value = "sender.html", method=requestmethod.post) public @responsebody person sendmessage(@requestbody persons person){     system.out.println("test..........");     system.out.println(person.getname()+ " "+person.getage()+" "+person.gethobby()+"\n");     return persons;  } 

but request blocks.

am sending correct json data controller matches java bean ?

hope our stack users me.

please check java bean class name matches json data.