我正在尝试解码 JSON。我用于解码 JSON 的快速函数是:
func GetChapInfo(){
let endpoint = "https://chapel-logs.herokuapp.com/chapel"
let endpointUrl = URL(string: endpoint)
do {
var request = URLRequest(url: endpointUrl!)
request.httpMethod = "GET"
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
let task = URLSession.shared.dataTask(with: request){
(data: Data?, response: URLResponse?, error: Error?) in
let dataAsString = String(data: data!, encoding: .utf8)
//print(dataAsString)
if(error != nil) {
print("Error")
}
else{
do{
guard let chapData = try? JSONDecoder().decode(Chapel.self, from: data!) else {
print("Error: Couldn't decode data into chapData")
return
}
for E in chapData.chap {
print(E.Day as Any)
}
}
}
}
task.resume()
}
}
我struct
在 Swift 中是
struct Chapel: Decodable {
let chap: [Chap]
}
struct Chap: Decodable {
let Name: String?
let Loc: String?
let Year: Int?
let Month: Int?
let Day: Int?
let Hour: Int?
let Min: Int?
let Sec: Int?
}
我从服务器的响应是:
{"chap":{"Name":"Why Chapel","Loc":"FEC","Year":2018,"Month":9,"Day":4,"Hour":16,"Min":1,"Sec":7}}
但是,当我运行此程序时,程序会打印出“错误:无法将数据解码为 chapData”,我无法弄清楚原因。