我正在尝试从JSON解析一些数据,我已经使用了另一个API,但现在我有另一个结构,我得到了typeMissmatch Erros ...
JSON看起来像:
{
"status": 200,
"data": {
"date": "2018-04-07T00:00:00.508Z",
"featured": [
{
"id": "2345",
"name": "name",
"price": "1,000",
"priceIcon": "String",
"priceIconLink": "URLString",
"images": {
"icon": "URLString",
"png": "URLString",
"gallery": "URLString",
"featured": "URLString"
},
"rarity": "1String",
"type": "1String",
"readableType": "1String"
}
],
"daily": [
{
"id": "12324",
"name": "name",
"price": "1,500",
"priceIcon": "String",
"priceIconLink": "URLString",
"images": {
"icon": "URLString",
"png": "URLString",
"gallery": "URLString",
"featured": "URLString"
},
"rarity": "1String",
"type": "1String",
"readableType": "1String"
}
]
}}
和Codable这样的结构:
struct Base : Codable {
let status : Int
let data : DataItems
}
struct DataItems : Codable {
let date : String
let featured : [Featured]
let daily : [Daily]
}
struct Featured : Codable {
let id : String
let name : String
let price : String
let priceIcon : String
let priceIconLink : String
let images : Images
let rarity : String
let type : String
let readableType : String
}
struct Daily : Codable {
let id : String
let name : String
let price : String
let priceIcon : String
let priceIconLink : String
let images : Images
let rarity : String
let type : String
let readableType : String
}
struct Images : Codable {
let icon : String
let png : String
let gallery : String
let featured : String
}
但是当我尝试解码Json时,我得到一个“Swift.DecodingError.typeMismatch”错误:
▿ Swift.DecodingError.typeMismatch
▿ typeMismatch: (2 elements)
- .0: Swift.String #0
▿ .1: Swift.DecodingError.Context
▿ codingPath: 5 elements
- CodingKeys(stringValue: "data", intValue: nil)
- CodingKeys(stringValue: "daily", intValue: nil)
▿ _JSONKey(stringValue: "Index 0", intValue: 0)
- stringValue: "Index 0"
▿ intValue: Optional(0)
- some: 0
- CodingKeys(stringValue: "images", intValue: nil)
- CodingKeys(stringValue: "featured", intValue: nil)
- debugDescription: "Expected to decode String but found a number instead."
- underlyingError: nil
我的JSON解码器:
enum Result<Value> {
case success(Value)
case failure(Error)
}
func getItems(for userId: Int, completion: ((Result<Base>) -> Void)?) {
var urlComponents = URLComponents()
urlComponents.scheme = "https"
urlComponents.host = "api.jsonbin.io"
urlComponents.path = "/myurl"
let userIdItem = URLQueryItem(name: "userId", value: "\(userId)")
urlComponents.queryItems = [userIdItem]
guard let url = urlComponents.url else { fatalError("Could not create URL from components") }
var request = URLRequest(url: url)
request.httpMethod = "GET"
let config = URLSessionConfiguration.default
config.httpAdditionalHeaders = [
"secret-key": "xyz"
]
let session = URLSession(configuration: config)
let task = session.dataTask(with: request) { (responseData, response, responseError) in
DispatchQueue.main.async {
if let error = responseError {
completion?(.failure(error))
} else if let jsonDataTest = responseData {
// Now we have jsonData, Data representation of the JSON returned to us
// from our URLRequest...
// Create an instance of JSONDecoder to decode the JSON data to our
// Codable struct
let decoder = JSONDecoder()
do {
// We would use Post.self for JSON representing a single Post
// object, and [Post].self for JSON representing an array of
// Post objects
let posts = try decoder.decode(Base.self, from: jsonDataTest)
completion?(.success(posts))
} catch {
completion?(.failure(error))
}
} else {
let error = NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey : "Data was not retrieved from request"]) as Error
completion?(.failure(error))
}
}
}
task.resume()
}
var base:Base?
func loadJson() {
getItems(for: 1) { (result) in
switch result {
case .success(let base):
self.base = base
dump(base)
case .failure(let error):
fatalError("error: \(error.localizedDescription)")
}
}
}
我是swift的新手,不知道这个错误告诉我什么或者问题“解码String但找到了一个数字”是什么 . 我认为我的结构有问题 . 我希望有人可以帮助我 .
1 回答
请显示要将数据解析到json的代码 .
我试过这个,它对我有用 .
顺便说一句,我有点困惑
Featured
和Daily
具有所有相同的变量,但是不同的模型 .EDIT
您在问题中发布的数据是有效的 . https://api.jsonbin.io/b/5acbd2dc214f9a2b84c6f167/1的json错误或不一致 .
Daily
中有"featured": false
,Featured
中有string
. 在结构中是预期的string
. 所以你会得到不匹配 . 一旦你尝试解析一个字符串(工作),然后你尝试将一个布尔值解析为一个字符串(错误) .