json - JQuery Autocomplete array of objects -

i'm using spring mvc , try send array of objects controller use int jquery autocomplete. have managed array list<string>. can't work array of objects. need label , value different strings in jquery autocomplete.

i want following, according autocomplete jquery ui:

[ { label: "label1", value: "value1" }, ... ] 

i have managed working within js

var obj = jquery.parsejson('[{"label":"label1","value":"value1"},{"label":"label2","value":"value2"}]'); 

but when create in controller can't send string autocomplete (due success in autocomplete not trigger , response(data) not run). try creating below.

    @requestmapping(params = {"type=itemtype"}) public @responsebody list<dataobject> returnitemtype(@requestparam("itemtype") string itemtype) {     list<dataobject> objlist = new arraylist<dataobject>();     objlist.add(new dataobject("label1", "value1"));     objlist.add(new dataobject("label2", "value2"));     return objlist; }    private static class dataobject {     private string label;     private string value;      public dataobject(string label, string value) {       this.label = label;       this.value = value;     }      public string tostring() {       return "label = " +label+ ", value = " +value;     }   } 

if add gson return gson.tojson(objlist);

the json looks in firebug. success in autocomplete not run , response(data) not run either cause of string gson.

the js autocomplete

        $(function() {     $("#itemtype").autocomplete({             source: function(request, response) {                 $.ajax({                     url:         "autocomplete.do",                        datatype:    "json",                     cache:       true,                     contenttype: "application/json; charset=utf-8",                     data: {                          "type"   : "itemtype",                         "itemtype" : $("#itemtype").val()                     },                     success: function(data) {                         response(data);                     }                  });             },             select: function(event, ui) {                   $("#itemtype").val(ui.item.value);                  $("#orderitemfilterform").submit();              },               minlength: 0     });     $('#itemtype').click(function(){          $(this).val("");         $(this).data("autocomplete").search($(this).val());      });          }); 

any suggestions?

in web application,i used json data javascript below:

success:function(data){  data=eval("("+data+")"); console.log(data.label+"\t"+data.value); }