mainApp.config(function($httpProvider){    $httpProvider.defaults.transformRequest = function(obj){        var str = [];        for(var p in obj){            str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));        }        return str.join("&");    }    $httpProvider.defaults.headers.post = {        ‘Content-Type‘: ‘application/x-www-form-urlencoded‘    }});