angularJS的$http.post请求，.net后台接收不到参数值的解决方案

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JS通用部分   var shoppingCartModule =angular.module('starter', ['ionic'], function ($httpProvider) {     // Use x-www-form-urlencoded Content-Type     $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';       /**      * The workhorse; converts an object to x-www-form-urlencoded serialization.      * @param {Object} obj      * @return {String}      */     var param = function (obj) {         var query = '', name, value, fullSubName, subName, subValue, innerObj, i;           for (name in obj) {             value = obj[name];               if (value instanceof Array) {                 for (i = 0; i < value.length; ++i) {                     subValue = value[i];                     fullSubName = name + '[' + i + ']';                     innerObj = {};                     innerObj[fullSubName] = subValue;                     query += param(innerObj) + '&';                 }             }             else if (value instanceof Object) {                 for (subName in value) {                     subValue = value[subName];                     fullSubName = name + '[' + subName + ']';                     innerObj = {};                     innerObj[fullSubName] = subValue;                     query += param(innerObj) + '&';                 }             }             else if (value !== undefined && value !== null)                 query += encodeURIComponent(name) + '=' + encodeURIComponent(value) + '&';         }           return query.length ? query.substr(0, query.length - 1) : query;     };       // Override $http service's default transformRequest     $httpProvider.defaults.transformRequest = [function (data) {         return angular.isObject(data) && String(data) !== '[object File]' ? param(data) : data;     }]; });   JS调用部分   shoppingCartModule.controller("infoctrl", function ($scope, $http) { 　　 var data = {                     good_id: '@Model.id',                     quantity: $scope.number,                     attr: ""                 };                 $http.post('/WebApp/Cart/Add', data).success(function (responseData) {                     $scope.addbuttonddisabled = false;                     }); 　　})