我能够从端点检索一些JSON，但是当我尝试将该JSON解码为模型对象时，无法解析JSON出现了问题。我已经确保模型对象中的属性与json键匹配，所以我不明白问题出在哪里。每次都会打印出catch块。
这是我检索json的代码：
func getServiceProviders() {
let session = URLSession.shared
let url = URL(string: "http://exampleendpoint.com/example")!
URLSession.shared.dataTask(with: url) { data, response, error in
//Here is where I try to decode the json into my model object
do {
let jsonContent = try JSONDecoder().decode(ServiceObject.self, from: data!)
print(jsonContent)
} catch {
print("Ooops")
}
}.resume()
这是我的模型对象：
struct ServiceObject: Decodable {
let serviceproviders: [ServiceProvider]
struct ServiceProvider: Decodable {
let city: String
let coordinates: Location
let name: String
let overallGrade: String
let postalCode: Int
let state: String
let reviewCount: Int
}
struct Location: Decodable {
let latitude: Double
let longitude: Double
}
}
这是我检索到的json对象的样子：
{
"serviceproviders": [
{
"city" : "Beech Grove",
"coordinates" : {
"latitude" : "39.715417",
"longitude" : "-86.095646"
},
"name" : "William J Ciriello Plumbing Co Inc",
"overallGrade" : "A",
"postalCode" : "46107",
"state" : "Indiana",
"reviewCount" : 309
},
{
"city" : "Indianapolis",
"coordinates" : {
"latitude" : "39.922607",
"longitude" : "-86.0267094"
},
"name" : "Roby's Plumbing & Appliance Service",
"overallGrade" : "B",
"postalCode" : "46256",
"state" : "Indiana",
"reviewCount" : 903
},