iphone - getting JSON data without object mapping using RestKit 0.2

Question

I'm trying to call a RESTful web service with RESTKit 0.2 that returns only a string, but the RKResponseDescriptor class forces me to use a mapping with its method responseDescriptorWithMapping in order to be able to get the string value, I created the mapping and got the string value without any problems, but how can i get this string value without having to create the object mapping (i.e. creating an NSObject subclass, creating a property for the string to be received, and creating a mapping dictionary between the returned JSON key and this property) ?

Answer 1

您仍然可以使用 RestKit 来发出请求。有时这样做是有意义的，以防服务器返回错误，在这种情况下，有必要访问从服务器返回的原始数据。

[[RKObjectManager sharedManager] getObjectsAtPath:kLoginURL
                                       parameters:params
                                          success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
                                              NSError *error;
                                              NSDictionary* json = [NSJSONSerialization JSONObjectWithData:operation.HTTPRequestOperation.responseData options:NSJSONReadingMutableLeaves error:&error];
                                              NSLog(@"msg: %@", [json objectForKey:@"msg"]);
                                          }
                                          failure:^(RKObjectRequestOperation *operation, NSError *error) {
                                          }];

Answer 2

在这种情况下，不要使用 RestKit 来发出请求。RestKit 使用AFNetworking进行底层网络通信，因此如果您导入类，您也可以使用它。尝试直接使用AFHTTPRequestOperation来发出请求。