Angularjs sending json data is getting 'POST 400 Bad request' - ajax

Question

I'm trying to send json data from a form to a controller in spring through angular but I'm getting Bad request. Any idea what this could be.
Angularjs controller send function
$scope.sendaction = function() {
var dataPost = {
idTaskAction : $scope.data.action.idTaskAction,
idTask : $scope.data.action.idTask
};
idTaskAction = 2;
$http({
url : '../../taskaction/send/',
method : 'POST',
data : JSON.stringify(dataPost),
headers : {
'Content-Type' : 'application/json'
}
}).success(function(data, status) {
if (data.msg != '') {
console.log('Success sending action data.msg: ' + data.msg);
} else {
console.log('Success sending action data.errr' + data.error);
}
}).error(function(data, status, headers) {
console.log('#Error sending action status: ' + status);
console.log('#headers: ' + headers);
console.log('#failure message: ' + data.msg );
});
}
**Spring Controller ** that takes json data
#RequestMapping(value = "/taskaction/send",
method = RequestMethod.POST,
produces = "application/json")
#ResponseBody
public Map<String, Object> sendAction(Principal principal,
#RequestBody Map<String, Object> data, #PathVariable Long id) {
logger.info("Task controller /taskaction/send ...");
String actionname = (String) data.get("actionname");
String description = (String) data.get("description");
String duration = (String) data.get("duration");
System.out.println("*****>>>>>>" + actionname + "|" + description + "|"
+ duration);
Map<String, Object> rdata = new HashMap<String, Object>();
TaskAction action = null;
rdata.put("success", true);
return rdata;
}
And what I'm receiving from chrome inspector request is
Remote Address:127.0.0.1:8080
Request URL:http://localhost:8080/myTasks/taskaction/send/
Request Method:POST
Status Code:400 Petición incorrecta
Request Headersview source
Accept:application/json, text/plain, */*
Accept-Encoding:gzip,deflate
Accept-Language:es-ES,es;q=0.8,en;q=0.6
Connection:keep-alive
Content-Length:18
Content-Type:application/json
Cookie:JSESSIONID=70CB35CA8E24E6ED7E7EB44FADB31BDD
Host:localhost:8080
Origin:http://localhost:8080
Referer:http://localhost:8080/myTasks/task/upd/8
User-Agent:Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.120 Safari/537.36
Request Payloadview source
{idTaskAction:2}
Response Headersview source
Connection:close
Content-Language:es
Content-Length:990
Content-Type:text/html;charset=utf-8
Date:Sat, 20 Sep 2014 09:00:14 GMT
Server:Apache-Coyote/1.1
The request just got one parameter {idTaskAction:2} and in angular controller dataPost variable I'm saving 2, idTask and idTaskAction.