【发布时间】：2020-03-06 16:24:19
【问题描述】：
我已经制作了一个简单的 api 来测试 apiary，我已经为响应创建了一个结构。但是当进行调用并且由于某种原因我试图使其符合我的结构时，我没有得到正文而只得到标题。我想得到小联盟球队并将它们放入这个结构中，然后打印出来。
API 链接： https://littleleaguers.docs.apiary.io/#reference/0/little-league-teams/list-all-little-league-teams
响应正文：
{
"name": "Little League Teams"
"teams": [
{
"id": 1,
"team": "Yankees",
"players": [
{
"id": 1,
"position": 1,
"player": null
},
{
"id": 2,
"position": 2,
"player": {
"name": "John",
"last": "Johnson",
"jersey": 5
"signed_up": "2018-07-16T08:40:51.620Z"
}
},
{
"id": 3,
"position": 3,
"player": null
},
{
"id": 4,
"position": 4,
"player": null
},
{
"id": 5,
"position": 5,
"player": {
"name": "Blake",
"last": "Smith",
"jersey": 28
"signed_up": "2018-07-14T18:23:23.000Z"
}
},
{
"id": 6,
"position": 6,
"player": null
},
{
"id": 7,
"position": 7,
"player": null
},
{
"id": 8,
"position": 8,
"player": null
},
{
"id": 9,
"position": 9,
"player": null
},
{
"id": 10,
"position": 10,
"player": null
},
{
"id": 11,
"position": 11,
"player": null
},
{
"id": 12,
"position": 12,
"player": null
}
]
},
{
"id": 2,
"team": "Red Sox",
"players": [
{
"id": 13,
"position": 1,
"player": null
},
{
"id": 14,
"position": 2,
"player": null
},
{
"id": 15,
"position": 3,
"player": null
},
{
"id": 16,
"position": 4,
"player": null
},
{
"id": 17,
"position": 5,
"player": null
},
{
"id": 18,
"position": 6,
"player": null
},
{
"id": 19,
"position": 7,
"player": null
}
]
}
]
}
League.swift：
struct League: Decodable {
var name: String
var teams: [Teams]
}
团队.swift：
struct Team: Decodable {
var id: Int
var team: String
var players: [Players]
}
Players.swift：
struct Players: Decodable {
var id: Int
var position: Int
var player: player?
}
struct player: Decodable {
var name: String
var last: String
var jersey: Int
var signed_up: String
}
然后我有一个类来检索这些数据：
GetData.swift：
class GetData{
func getLeague(){
let url = URL(string: "https://private-4df2e8-littleleaguers.apiary-mock.com/league")!
let request = URLRequest(url: url)
let task = URLSession.shared.dataTask(with: request) { data, response, error in
if let response = response {
print("RESPONSE \(response)")
/* if let data = data, let body = String(data: data, encoding: .utf8) {
print("BODY \(body)")
// this line prints the body
}*/
if let data = data, let dataObtained = try? JSONDecoder().decode(League.self, from: data){
print("DATA \(dataObtained).....")// this line does not print
}
} else {
print(error ?? "Unknown error")
}
}
task.resume()
}
}
然后我通过以下方式在 ViewController.swift 中调用它：
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let getData = GetData()
getData.getLeague()
}
在控制台中打印的唯一内容是：
RESPONSE <NSHTTPURLResponse: 0x6000008e5e80> { URL: https://private-4df2e8-littleleaguers.apiary-mock.com/league } { Status Code: 200, Headers {
"Access-Control-Allow-Origin" = (
"*"
);
"Content-Encoding" = (
gzip
);
"Content-Length" = (
427
);
"Content-Type" = (
"application/json"
);
Date = (
"Fri, 06 Mar 2020 13:35:40 GMT"
);
Vary = (
"Accept-Encoding"
);
"access-control-allow-methods" = (
"OPTIONS,GET,HEAD,POST,PUT,DELETE,TRACE,CONNECT"
);
"access-control-max-age" = (
10
);
"x-apiary-ratelimit-limit" = (
120
);
"x-apiary-ratelimit-remaining" = (
119
);
"x-apiary-transaction-id" = (
5e6251ac6b105b008135d67a
);
} }
【问题讨论】：
-
不要
try?，去掉问号和catchDecoding错误。 -
您的 JSON 无效，某些值后面缺少逗号