angularjs 图片上传

<input type="file" file-model="myFile"/>
<div class="col-md-12">
  <img ng-src="{{imageSrc}}" style="max-68px;max-height:68px;display:block;" />
</div>

//controller

$scope.getFile = function (files) {
  console.log(files);
  fileReader.readAsDataUrl(files, $scope)
    .then(function (result) {
      $scope.imageSrc = result;
      console.log(result);
    });
};
$scope.leaveSubmit = function (e) {
  console.log($scope.messages);
  if ($scope.messages ==='' || $scope.messages === undefined){
    $ionicLoading.show({
      template: '请填写您的需求！',
      duration: 2000,
      showBackdrop: false
    });
    return;
  }
  var data = {
    fileName: $scope.imageSrc
    // userFeedback: $scope.userFeedback.message
  };
  var fd = new FormData();
  angular.forEach(data, function(val, key) {
    fd.append(key, val);
  });
  $http({
        url: "",
        data: fd,
        headers: {'Content-Type': undefined},
        transformRequest: angular.identity
      }).success(function (res) {
        console.log('1'+ res);
      }).error(function (err) {
        console.log(err);
        $rootScope.showMsg("网络错误");
      })

};

app.directive('fileModel', ['$parse', function ($parse) {
  return {
    restrict: 'A',
    link: function (scope, element, attrs, ngModel) {
      var model = $parse(attrs.fileModel);
      var modelSetter = model.assign;
      element.bind('change', function (event) {
        scope.$apply(function () {
          modelSetter(scope, element[0].files[0]);
        });
        //附件预览
        scope.file = (event.srcElement || event.target).files[0];
        console.log(scope.file);
        scope.getFile(scope.file);
      });
    }
  };
}]);

Mine.factory('fileReader', ["$q", "$log", function ($q, $log) {
  var onLoad = function (reader, deferred, scope) {
    return function () {
      scope.$apply(function () {
        deferred.resolve(reader.result);
      });
    };
  };
  var onError = function (reader, deferred, scope) {
    return function () {
      scope.$apply(function () {
        deferred.reject(reader.result);
      });
    };
  };

  var getReader = function (deferred, scope) {
    var reader = new FileReader();
    reader.onload = onLoad(reader, deferred, scope);
    reader.onerror = onError(reader, deferred, scope);
    return reader;
  };

  var readAsDataURL = function (files, scope) {/*上传图片的主函数*/
    console.log(files);
    var deferred = $q.defer();
    var reader = getReader(deferred, scope);
    reader.readAsDataURL(files);
    return deferred.promise;
  };

  return {
    readAsDataUrl: readAsDataURL
  };
}]);