关于ios：ObjectMapper failed to serialize response error Code=2

ObjectMapper failed to serialize response error Code=2

我在使用 Alamofire 对象映射器

访问 Alamofire 获取请求时遇到错误

这就是我使用 API 的方式-

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APIService.shared.getSlots{ (success,weekSlots, error) in
if success {
self.weekSlots = weekSlots!
print("success!!")
} else {
print(error?.errorMessage ??"NOPE")
}
}

而APIService类中的getSlot函数是-

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open func getSlots(completion: @escaping (Bool, [WeekSlot]?, APIError?) -> ()) {
sessionManager.request(APIRouter.getSlots())
.validate(statusCode: 200..<300)
.responseArray(queue: nil,
keyPath:"week_slots",
context: nil) { (response: DataResponse<[WeekSlot]>) in
switch response.result {
case .success(let value):
self.saveArraysToRealm(value: value)
completion(true,value, nil)
case .failure:
let error = self.processFailure(json: JSON(response.data as Any))
completion(false, nil, error)
print(error)
}
}
}

这是我的数据模型：

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import Foundation
import ObjectMapper
import RealmSwift

class WeekSlot: Object, Mappable {
dynamic var date : String? =""
var slot = List<Slots>()

//Impl. of Mappable protocol
required convenience init?(map: Map) {
self.init()
}

func mapping(map: Map) {
date <- map["date"]
slot <- (map["slots"], ArrayTransform<Slots>())
}
}

我已经声明了执行get请求的请求，并且url也是正确的。 API 不接受任何参数，除了由 sessionManager 处理的身份验证令牌。但是，我在调试时收到以下错误响应-

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[Request]: GET http://beta.xamidea.in/api/v1/teachers/get_slots/
[Response]: <NSHTTPURLResponse: 0x600000434c80> { URL: http://beta.xamidea.in/api/v1/teachers/get_slots/ } { status code: 200, headers {
Allow ="GET, POST, HEAD, OPTIONS";
Connection ="keep-alive";
"Content-Length" = 477;
"Content-Type" ="application/json";
Date ="Tue, 10 Oct 2017 11:01:53 GMT";
Server ="nginx/1.10.3 (Ubuntu)";
Vary = Accept;
"X-Frame-Options" = SAMEORIGIN;
} }
[Data]: 477 bytes
[Result]: FAILURE: Error Domain=com.alamofireobjectmapper.error Code=2 "ObjectMapper failed to serialize response." UserInfo=. {NSLocalizedFailureReason=ObjectMapper failed to serialize response.}
[Timeline]: Timeline: {"Request Start Time": 529326113.851,"Initial Response Time": 529326113.985,"Request Completed Time": 529326113.986, "Serialization Completed Time": 529326113.987,"Latency": 0.134 secs, "Request Duration": 0.135 secs,"Serialization Duration": 0.001 secs, "Total Duration": 0.136 secs }
a–? request : Optional<URLRequest>
a–? some : http://beta.xamidea.in/api/v1/teachers/get_slots/
a–? url : Optional<URL>
a–? some : http://beta.xamidea.in/api/v1/teachers/get_slots/
- cachePolicy : 0
- timeoutInterval : 60.0
- mainDocumentURL : nil
- networkServiceType : __ObjC.NSURLRequest.NetworkServiceType
- allowsCellularAccess : true
a–? httpMethod : Optional<String>
- some :"GET"
a–? allHTTPHeaderFields : Optional<Dictionary<String, String>>
a–? some : 1 element
a–? 0 : 2 elements
- key :"Authorization"
- value :"Token 4d7ebe501bcd7c910cf1950ab53bc8aa2a4a569d"
- httpBody : nil
- httpBodyStream : nil
- httpShouldHandleCookies : true
- httpShouldUsePipelining : false
a–? response : Optional<NSHTTPURLResponse>
a–? data : Optional<Data>
a–? some : 477 bytes
- count : 477
a–? pointer : 0x00007f896a48aa80
- pointerValue : 140228170394240
a–? result : FAILURE: Error Domain=com.alamofireobjectmapper.error Code=2"ObjectMapper failed to serialize response." UserInfo= {NSLocalizedFailureReason=ObjectMapper failed to serialize response.}
a–? timeline : Timeline: {"Request Start Time": 529326113.851,"Initial Response Time": 529326113.985,"Request Completed Time": 529326113.986,"Serialization Completed Time": 529326113.987,"Latency": 0.134 secs,"Request Duration": 0.135 secs,"Serialization Duration": 0.001 secs,"Total Duration": 0.136 secs }
- requestStartTime : 529326113.85062999
- initialResponseTime : 529326113.98505801
- requestCompletedTime : 529326113.98612601
- serializationCompletedTime : 529326113.986781
- latency : 0.13442802429199219
- requestDuration : 0.13549602031707764
- serializationDuration : 0.00065499544143676758
- totalDuration : 0.1361510157585144
a–? _metrics : Optional<AnyObject>

这个错误是什么意思？？

API 对成功的响应是这样的-

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{
"result": {
"week_slots": [
{
"date":"2017-10-10",
"slots": []
},
{
"date":"2017-10-11",
"slots": [
{
"start":"2017-10-11T20:00:00Z",
"end":"2017-10-11T21:00:00Z",
"availability": true,
"booked": false
},
{
"start":"2017-10-11T10:00:00Z",
"end":"2017-10-11T12:00:00Z",
"availability": true,
"booked": false
}
]
},
{
"date":"2017-10-12",
"slots": []
},
{
"date":"2017-10-13",
"slots": []
},
{
"date":"2017-10-14",
"slots": []
},
{
"date":"2017-10-15",
"slots": []
},
{
"date":"2017-10-16",
"slots": []
}
]
},
"success": true,
"error": {}
}

我在 1 天后找到了解决方案，问题在于 keyPath 访问"week_slots" ，因为我使用 swiftyjson 访问的正确方法是：

1	keyPath:"result.week_slots"

所以基本上每当你得到这个错误时，即使响应是成功的，这是因为你无法在你的模型中正确映射响应

尝试将模型类更改为：

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class WeekSlot: Object, Mappable {
dynamic var date : String? =""
var slot: [Slots] = []

//Impl. of Mappable protocol
required convenience init?(map: Map) {
self.init()
}

func mapping(map: Map) {
date <- map["date"]
slot <- map["slots"]
}
}

还要检查您的插槽型号