angularjs – 使用Restangular取消对服务器的GET请求

angular.module('nrApp').factory('userService',['Restangular','UserModel','DSCacheFactory',function (Restangular,UserModel,DSCacheFactory) {
    // Create a new cache called "profileCache"
    var userCache = DSCacheFactory('userCache',{
        maxAge: 3600000,deleteOnExpire: 'aggressive',storageMode: 'localStorage',// This cache will sync itself with `localStorage`.
        onExpire: function (key,value) {
            Restangular.oneUrl('users',key).get().then(function(data) {
                userCache.put(key,data);
            });
        }
    });

    Restangular.extendModel('users',function(obj) {
        return UserModel.mixInto(obj);
    });

    Restangular.addRequestInterceptor(function(element,operation,what,url) {
        if(operation === 'get') {
            debugger;
            //Check the cache to see if the resource is already cached
            var data = userCache.get(url);
            //If cache object does exist,return it
            if(data !== undefined) {
                angular.extend(element,data);
            }

            return element;
        }
    });

    Restangular.addResponseInterceptor(function(data,url,response) {
        //Cache the response from a get method
        if(operation === 'get') {
            debugger;
            userCache.put(url,data);
        }

        //Unvalidate the cache when a 'put','post' and 'delete' is performed to update the cached version.
        if (operation === 'put' || operation === 'post' || operation === 'delete') {
            userCache.destroy();
        }

        return response;
    });

    return Restangular.service('users');
}]);

从注释中可以看出,我想要实现的是每当使用Restangular通过此服务执行Get请求时,都会检查本地缓存,如果缓存返回一个对象,它将扩展到restangular元素.想要实现的流程是在为该请求找到缓存对象时取消对服务器的请求.

但是没有任何运气,即使在缓存中找到了对象,addResponseInterceptor方法仍然会执行.

在“获取”请求期间是否有任何可能的解决方案来取消对服务器的请求？

谢谢！

（编辑：李大同）

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