我正在尝试将来自URLSession请求的JSON字符串解析为Swift对象。
我设法获得了第一级属性的数据，但是对于嵌套属性，发生了一些奇怪的事情。而不是:我得到= AND字符串缺少双引号
如何访问date内的published属性，因为我无法执行此操作：print(todo["published"]["date"])
以下是我得到的数据：
[
"pretty_artists": kida,
"published": {
date = "2015-12-05";
now = 1517005961;
time = "18.59";
timestamp = 1449341947;
},
"views": 36,
"yt_id": cyXbV7EUl14,
"play_start": 0,
"title": ski ide,
"duration": 235,
"video_name": skiide,
"artists": kida
]
这是我的功能：
func makeGetCall(todoEndpoint: String) {
// Set up the URL request
guard let url = URL(string: todoEndpoint) else {
print("Error: cannot create URL")
return
}
let urlRequest = URLRequest(url: url)
// set up the session
let config = URLSessionConfiguration.default
let session = URLSession(configuration: config)
// make the request
let task = session.dataTask(with: urlRequest) {
(data, response, error) in
// check for any errors
guard error == nil else {
print("error calling GET on /todos/1")
print(error!)
return
}
// make sure we got data
guard let responseData = data else {
print("Error: did not receive data")
return
}
// parse the result as JSON, since that's what the API provides
do {
guard let todo = try JSONSerialization.jsonObject(with: responseData, options: [])
as? [String: Any] else {
print("error trying to convert data to JSON")
return
}
// now we have the todo
// let's just print it to prove we can access it
print(todo["published"]["date"])
// the todo object is a dictionary
// so we just access the title using the "title" key
// so check for a title and print it if we have one
guard let todoTitle = todo["title"] as? String else {
print("Could not get todo title from JSON")
return
}
print("The title is: " + todoTitle)
} catch {
print("error trying to convert data to JSON")
return
}
}
task.resume()
}