spring - JSP - AJAX and Controller gets the Object but does not update modelAttriibute -

when page loads, populate table.

@requestmapping(value = { "/access" }, method = requestmethod.get) public string access(modelmap model) {      list<userdto> users = userservice.findallusers();     model.addattribute("users", users);      userdto user = new userdto();     model.addattribute("user", user);      return "access"; } 

when user clicks edit on 1 row, ajax called.

function getdetails(id) {     $.ajax({         type : "get",         data : {id: id},         url : "get-details",         cache : false,         success : function(response) {             // code here         },     }); } 

on controller, userdto id provided.

@requestmapping(value = { "/get-details" }, method = requestmethod.get) @responsebody public string getdetails(@requestparam("id") string id, modelmap model) {     userdto user = userservice.findbyid(id);     model.addattribute("user", user);      return access; //'access' current page } 

in jsp have...

<form:form method="post" modelattribute="user" class="form-horizontal"> 

my problem attributes of "user" remains null , not updated. note after calling ajax calls controller, userservice.findbyid has result. missing?

thanks.

update

i think need update modelattribute="user" in jsp using response after ajax call. because using "user" attribute , binding fields , errors

<form:form method="post" modelattribute="user" class="form-horizontal">         <div class="modal-content">             <div class="modal-body">                 <!-- default panel contents -->                 <form:input type="hidden" path="id" id="id" />                  <div class="row">                     <div class="form-group col-md-14">                         <label class="col-md-3 control-label" for="firstname">first                             name</label>                         <div class="col-md-7">                             <form:input type="text" path="firstname" id="firstname"                                 class="form-control input-sm" />                             <div class="has-error">                                 <form:errors path="firstname" class="help-inline" />                             </div>                         </div>                     </div>                 </div>             </div>         </div>     </form:form> 

if set directly input field, having error if form submitted error (e.g. empty fields)

severe: servlet.service() servlet [dispatcher] in context path [/sssbackend] threw exception [java.lang.illegalstateexception: neither bindingresult nor plain target object bean name 'user' available request attribute] root cause java.lang.illegalstateexception: neither bindingresult nor plain target object bean name 'user' available request attribute @ org.springframework.web.servlet.support.bindstatus.(bindstatus.java:144) @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getbindstatus(abstractdataboundformelementtag.java:168) @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getpropertypath(abstractdataboundformelementtag.java:188) @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.getname(abstractdataboundformelementtag.java:154) @ org.springframework.web.servlet.tags.form.abstractdataboundformelementtag.writedefaultattributes(abstractdataboundformelementtag.java:117) @ org.springframework.web.servlet.tags.form.abstracthtmlelementtag.writedefaultattributes(abstracthtmlelementtag.java:422)

ok, want object in success: function(response){ } should doing :

@requestmapping(value = { "/get-details" }, method = requestmethod.get) @responsebody public userdto getdetails(@requestparam("id") string id, modelmap model) {     userdto user = userservice.findbyid(id);   return user; //return object not view name } 

and in ajax part :

success: function(response){  //response = userdto  alert(response.name); //for example  }