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Главная - Вопросы по программированию - нулевые значения для сопоставленных атрибутов с использованием RestKit для iOS и Swift

нулевые значения для сопоставленных атрибутов с использованием RestKit для iOS и Swift

#ios #swift #restkit #restkit-0.20

#iOS #swift #restkit #restkit-0.20

Вопрос:

Я пытаюсь выполнить POST-запрос с данными JSON для моего API:

Моя реализация класса:

 class Person: NSObject {
    var theId: String?
    var countrycode: Int?
    var language: String?
}

Сопоставление и дескриптор в классе делегата приложения:

 let requestMapping = RKObjectMapping.request()
requestMapping?.addAttributeMappings(from: ["theId":"theId", "countrycode":"countrycode", "language":"language"])

let requestDescriptor = RKRequestDescriptor(mapping: requestMapping, objectClass: Person.self, rootKeyPath: nil, method: .any)

objectManager.addRequestDescriptor(requestDescriptor)

И я использую его в следующем коде:

 self.objectManager.post(person, path: "my_path", parameters: nil, success: { (operation, result) in
    // OK Response Here
}) { (operation, error) in
    // Error Response Here
}

Мой API ожидал JSON:

 {
    "theId":"123",
    "countrycode":1001,
    "language":"en"
}

Однако все мои сопоставленные значения задаются как null. Но в отладчике для значений моих объектов установлены правильные значения, и я подтвердил это непосредственно перед использованием объекта.

Вот мой журнал:

 2019-04-18 13:22:44.382556 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:1178 Performing mapping operation: <RKMappingOperation 0x600002ba9ae0> for '__NSDictionaryM' object. Mapping values from object <AE_Project_iOS.Person: 0x600000094540> ((null)) to object {
} with object mapping (null)
2019-04-18 13:22:44.382707 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'theId' to 'theId'
2019-04-18 13:22:44.382801 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'theId' to 'theId'. Value: (null)
2019-04-18 13:22:44.382874 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.382972 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'countrycode' to 'countrycode'
2019-04-18 13:22:44.383054 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'countrycode' to 'countrycode'. Value: (null)
2019-04-18 13:22:44.383129 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.383223 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'language' to 'language'
2019-04-18 13:22:44.388335 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'language' to 'language'. Value: (null)
2019-04-18 13:22:44.388464 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.388562 0300 AE-Project-iOS[70642:6658348] D restkit.object_mapping:RKMappingOperation.m:1277 Finished mapping operation successfully...

Вот полный журнал:

 2019-04-18 13:22:44.382334 0300 AE-Project-iOS[70642:6658348] D restkit.object_mapping:RKMappingOperation.m:1177 Starting mapping operation...
2019-04-18 13:22:44.382556 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:1178 Performing mapping operation: <RKMappingOperation 0x600002ba9ae0> for '__NSDictionaryM' object. Mapping values from object <AE_Project_iOS.Person: 0x600000094540> ((null)) to object {
} with object mapping (null)
2019-04-18 13:22:44.382707 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'theId' to 'theId'
2019-04-18 13:22:44.382801 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'theId' to 'theId'. Value: (null)
2019-04-18 13:22:44.382874 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.382972 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'countrycode' to 'countrycode'
2019-04-18 13:22:44.383054 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'countrycode' to 'countrycode'. Value: (null)
2019-04-18 13:22:44.383129 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.383223 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'language' to 'language'
2019-04-18 13:22:44.388335 0300 AE-Project-iOS[70642:6658348] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'language' to 'language'. Value: (null)
2019-04-18 13:22:44.388464 0300 AE-Project-iOS[70642:6658348] D restkit.network:RKObjectParameterization.m:132 Serialized (null) value at keyPath to NSNull ((null))
2019-04-18 13:22:44.388562 0300 AE-Project-iOS[70642:6658348] D restkit.object_mapping:RKMappingOperation.m:1277 Finished mapping operation successfully...
2019-04-18 13:22:44.389680 0300 AE-Project-iOS[70642:6670969] I restkit.network:RKObjectRequestOperation.m:134 POST 'http://example.com/ProjectRestServices/jaxrs/person'
2019-04-18 13:22:44.389814 0300 AE-Project-iOS[70642:6670969] D restkit.network:RKObjectRequestOperation.m:135 request.headers={
    "Accept-Language" = "en;q=1, ar-US;q=0.9";
    "Content-Type" = "application/json; charset=utf-8";
}
2019-04-18 13:22:44.389916 0300 AE-Project-iOS[70642:6670969] T restkit.network:RKObjectRequestOperation.m:137 request.body={"person":{"countrycode":null,"language":null,"theId":null}}
2019-04-18 13:22:44.412168 0300 AE-Project-iOS[70642:6670345] I restkit.network:RKResponseMapperOperation.m:428 Non-successful status code encountered: performing mapping with nil target object.
2019-04-18 13:22:44.412305 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMapperOperation.m:414 Executing mapping operation for representation: {
    responseCode = 10000;
    responseString = "Entered ID is incorrect. Please enter a correct ID number";
    responseStringAR = "Entered ID is incorrect. Please enter a correct ID number";
}
 and targetObject: (null)
2019-04-18 13:22:44.412425 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMapperOperation.m:357 Examining keyPath '' for mappable content...
2019-04-18 13:22:44.412605 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMapperOperation.m:337 Found mappable data at keyPath '': {
    responseCode = 10000;
    responseString = "Entered ID is incorrect. Please enter a correct ID number";
    responseStringAR = "Entered ID is incorrect. Please enter a correct ID number";
}
2019-04-18 13:22:44.412790 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMapperOperation.m:258 Asked to map source object {
    responseCode = 10000;
    responseString = "Entered ID is incorrect. Please enter a correct ID number";
    responseStringAR = "Entered ID is incorrect. Please enter a correct ID number";
} with mapping <RKObjectMapping:0x6000031b0460 objectClass=AE_Project_iOS.ErrorMessage propertyMappings=(
    "<RKAttributeMapping: 0x6000014cb2d0 responseString => message>",
    "<RKAttributeMapping: 0x6000014ff510 responseStringAR => messageAr>",
    "<RKAttributeMapping: 0x6000014ff630 responseCode => code>"
)>
2019-04-18 13:22:44.413105 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMappingOperation.m:1177 Starting mapping operation...
2019-04-18 13:22:44.413383 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:1178 Performing mapping operation: <RKMappingOperation 0x600002ba7660> for 'AE_Project_iOS.ErrorMessage' object. Mapping values from object {
    responseCode = 10000;
    responseString = "Entered ID is incorrect. Please enter a correct ID number";
    responseStringAR = "Entered ID is incorrect. Please enter a correct ID number";
} to object <AE_Project_iOS.ErrorMessage: 0x600001402c40> with object mapping (null)
2019-04-18 13:22:44.413624 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:698 Found transformable value at keyPath 'responseString'. Transforming from class '__NSCFString' to 'NSString'
2019-04-18 13:22:44.413828 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'responseString' to 'message'
2019-04-18 13:22:44.413966 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'responseString' to 'message'. Value: Entered ID is incorrect. Please enter a correct ID number
2019-04-18 13:22:44.414078 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:698 Found transformable value at keyPath 'responseStringAR'. Transforming from class '__NSCFString' to 'NSString'
2019-04-18 13:22:44.414206 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'responseStringAR' to 'messageAr'
2019-04-18 13:22:44.414365 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'responseStringAR' to 'messageAr'. Value: Entered ID is incorrect. Please enter a correct ID number
2019-04-18 13:22:44.414485 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:698 Found transformable value at keyPath 'responseCode'. Transforming from class 'NSTaggedPointerString' to 'NSNumber'
2019-04-18 13:22:44.414605 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:717 Mapping attribute value keyPath 'responseCode' to 'code'
2019-04-18 13:22:44.414723 0300 AE-Project-iOS[70642:6670345] T restkit.object_mapping:RKMappingOperation.m:733 Mapped attribute value from keyPath 'responseCode' to 'code'. Value: 10000
2019-04-18 13:22:44.414891 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMappingOperation.m:1277 Finished mapping operation successfully...
2019-04-18 13:22:44.415039 0300 AE-Project-iOS[70642:6670345] D restkit.object_mapping:RKMapperOperation.m:440 Finished performing object mapping. Results: {
    "" = "<AE_Project_iOS.ErrorMessage: 0x600001402c40>";
}
2019-04-18 13:22:44.415461 0300 AE-Project-iOS[70642:6670345] E restkit.network:RKObjectRequestOperation.m:172 POST 'http://example.com/ProjectRestServices/jaxrs/person' (406 Not Acceptable / 0 objects) [request=0.0214s mapping=0.0000s total=0.0256s]: Error Domain=org.restkit.RestKit.ErrorDomain Code=1004 "<AE_Project_iOS.ErrorMessage: 0x600001402c40>" UserInfo={RKObjectMapperErrorObjectsKey=(
    "<AE_Project_iOS.ErrorMessage: 0x600001402c40>"
), NSLocalizedDescription=<AE_Project_iOS.ErrorMessage: 0x600001402c40>}
2019-04-18 13:22:44.415581 0300 AE-Project-iOS[70642:6670345] T restkit.network:RKObjectRequestOperation.m:179 response.body={"responseCode":"10000","responseString":"Entered ID is incorrect. Please enter a correct ID number","responseStringAR":"Entered ID is incorrect. Please enter a correct ID number"}

Комментарии:

1. Почему все свойства Person класса являются необязательными? Может ли, например, id когда-либо быть нулевым?

2. Я более внимательно просмотрел ваши журналы, и мне кажется, что все равно null, я не понимаю вашего утверждения о том, что вы можете видеть правильные значения в отладчике.

3. @JoakimDanielson Я остановил отладчик непосредственно перед выполнением self.objectManager.post... строки, и значения person не равны нулю. Я убедился в этом на 100%

4. Это немного похоже на выстрел в темноте, но, возможно, ваши свойства должны быть объявлены как @objc и, возможно, также dynamic . Я считаю, что RestKit использует кодирование ключа / значения, которое не будет работать с не-objc свойствами swift.

5. @Rudedog Вы правы. Это была моя проблема. Пожалуйста, добавьте это в качестве ответа, чтобы получить награду 🙂

Ответ №1:

RestKit использует кодирование ключа / значения для извлечения свойств из объекта. Это означает, что свойства в объекте Swift должны быть объявлены @objc и, возможно dynamic , RestKit должен их обнаружить.

Метки: