根据
http://docs.angularjs.org/api/ng.$http,拦截器有以下方法：
request: function(config) {
//we could manipulate query here
return config || $q.when(config);
},requestError: function(rejection) {
// what is the use case of this?
return $q.reject(rejection);
},response: function(response) {
// response.status === 200
return response || $q.when(response);
},responseError: function(rejection) {
// when response Failed ...
return $q.reject(rejection);
}
requestError是如何触发的,你能想到什么用例？
