[英]How to parse JSON with custom parameters using Codable protocol
我有一个带键的JSON
{
"yearOfManufacture":"20/9/2018",
"carSize":8,
"isNew":true,
"carAssets":[
{
"color":"5761807993001",
"nativeId":"{\"app\":\"1234/Car/Native_App\",\"web\":\" /8888/Car/Native_Car_Desktop\"}"
}
]
}
我正在尝试使用结构模型使用Codable协议进行解析
struct Cars: Codable {
var yearOfManufacture: String?
var carSize: Int = 0
var isNew: Bool = true
var carAssets: [CarAssests]?
}
struct CarAssests: Codable {
var color: String?
var nativeId: String?
}
我收到错误消息,例如由于数据格式不正确而无法读取。 我尝试将CodingKeys与解码器容器一起使用,但未获得“ nativeId”的确切类型:“ {\\” app \\“:\\” 1234 / Car / Native_App \\“,\\” web \\“:\\” / 8888 / Car / Native_Car_Desktop \\ “}”未获得确切的数据类型。
let decoder = JSONDecoder()
decoder.dataDecodingStrategy = .deferredToData
if let jsonData = jsonString.data(using: .utf8) {
do {
print(jsonData)
let assets = try decoder.decode(Cars.self, from: jsonData)
print(assets)
} catch {
print(error.localizedDescription)
}
}
我敢打赌你正在做这样的事情:
let jsonString = """
{
"yearOfManufacture": "20/9/2018",
"carSize": 8,
"isNew": true,
"carAssets": [
{
"color": "5761807993001",
"nativeId": "{\"app\":\"1234/Car/Native_App\",\"web\":\" /8888/Car/Native_Car_Desktop\"}"
}
]
}
"""
在多行字符串中, \\"
和"
均表示字符"
。因此,您必须编写\\\\"
才能获得两个字符\\
和"
:
let jsonString = """
{
"yearOfManufacture": "20/9/2018",
"carSize": 8,
"isNew": true,
"carAssets": [
{
"color": "5761807993001",
"nativeId": "{\\"app\\":\\"1234/Car/Native_App\\",\\"web\\":\\" /8888/Car/Native_Car_Desktop\\"}"
}
]
}
"""
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