angularjs interceptor

1// register the interceptor as a service
2$provide.factory('myHttpInterceptor', function($q, dependency1, dependency2) {
3  return {
4    // optional method
5    'request': function(config) {
6      // do something on success
7      return config;
8    },
9
10    // optional method
11   'requestError': function(rejection) {
12      // do something on error
13      if (canRecover(rejection)) {
14        return responseOrNewPromise
15      }
16      return $q.reject(rejection);
17    },
18
19
20
21    // optional method
22    'response': function(response) {
23      // do something on success
24      return response;
25    },
26
27    // optional method
28   'responseError': function(rejection) {
29      // do something on error
30      if (canRecover(rejection)) {
31        return responseOrNewPromise
32      }
33      return $q.reject(rejection);
34    }
35  };
36});
37
38$httpProvider.interceptors.push('myHttpInterceptor');
39
40
41// alternatively, register the interceptor via an anonymous factory
42$httpProvider.interceptors.push(function($q, dependency1, dependency2) {
43  return {
44   'request': function(config) {
45       // same as above
46    },
47
48    'response': function(response) {
49       // same as above
50    }
51  };
52});