我正在使用alamofire和swiftyjson来检索本地网点的折扣数据。我在尝试使用codable序列化以下json并调用集合视图控制器中的元素时遇到了很多麻烦。我对swift很陌生，但不熟悉网络，所以如果有更专业的人提供任何帮助，我将不胜感激。
谢谢！！！
{
"query": {
"total": 517,
"page": 1,
"per_page": 20,
"query": null,
"location": {
"latitude": 39.9592472,
"longitude": -75.16149250000001
},
"radius": 10,
"online": null,
"category_slugs": null,
"provider_slugs": null,
"updated_after": null,
"order": "distance"
},
"deals": [
{
"deal": {
"id": 14302,
"title": "Chimney and Fireplace Cleaning with Safety Inspection from Samuel Duct And Dryer Cleaning (Up to 88% Off)",
"short_title": "Up to 88% Off Services from Samuel Duct And Dryer Cleaning",
"description": "Choice of: Chimney and Fireplace Sweeping for Chimneys of Up to 10 Feet. Includes: Sweeping and cleaning of chimneys of up to 10 feet Sweeping and cleaning of fireplace Chimney and fireplace inspection",
"fine_print": "May be repurchased every 90 days. Appointment required. Limit 2 per person, may buy 2 additional as gifts. Valid only for option purchased. Additional fee may be required for certain chimney/fireplace types. Valid in New Jersey, Philadelphia and Delaware, 95 miles from zip code 08550.",
"number_sold": 0,
"url": "https://api.discountapi.com/v2/deals/14302/click?api_key=hvdhgCzK",
"price": 49,
"value": 249.99,
"discount_amount": 200.99,
"discount_percentage": 0.8039921596863875,
"provider_name": "Groupon",
"provider_slug": "groupon",
"category_name": "Home Services",
"category_slug": "home-services",
"image_url": "https://api.discountapi.com/v2/deals/14302/image?api_key=hvdhgCzK",
"online": false,
"expires_at": "2018-08-15T00:00:00Z",
"created_at": "2018-02-16T13:46:43Z",
"updated_at": "2018-04-15T11:22:15Z",
"merchant": {
"id": 10681,
"name": "Samuel Duct And Dryer Cleaning",
"address": "N 13th St & Vine St",
"locality": "Philadelphia",
"region": "PA",
"postal_code": "19107",
"country": "US",
"latitude": 39.9573863,
"longitude": -75.1603041,
"url": "http://www.facebook.com/samuelductndryercleaning"
}
}
},
{
"deal": {
"id": 405186,
"title": "Fine Palate",
"short_title": "Fine Palate",
"description": "Bring your family in, take a seat and let us do all the work. We have a staff of trained professionals and will do everything in your power to make your dining experience one to remember.",
"fine_print": "Minimum purchase of $50 at restaurant, Mon-Thurs. Minimum purchase of $75 on Fri-Sun. Purchase must include food. Not valid for alcohol. Not valid for Happy Hour.",
"url": "https://api.discountapi.com/v2/deals/405186/click?api_key=hvdhgCzK",
"price": 10,
"value": 25,
"discount_amount": 15,
"discount_percentage": 0.6,
"provider_name": "Restaurant.com",
"provider_slug": "restaurant-com",
"category_name": "Restaurants",
"category_slug": "restaurants",
"image_url": "https://api.discountapi.com/v2/deals/405186/image?api_key=hvdhgCzK",
"online": false,
"created_at": "2018-03-20T20:08:24Z",
"updated_at": "2018-04-14T14:08:46Z",
"merchant": {
"id": 194475,
"name": "Fine Palate",
"address": "",
"region": "",
"country": "US",
"latitude": 39.957133,
"longitude": -75.164206
}
}
}
]
}
这是一个起点。每个字典({}(都在一个自定义结构中解码，键是结构成员。CCD_ 2表示一个阵列。
密钥deals的结构非常糟糕，deal字典实际上是多余的，需要一个自定义初始化器将字典转换为数组。
如果您负责JSON，请更改它并发送一个简单的字典数组。
日期解码策略.iso8601将ISO8601字符串转换为Date实例
密钥解码策略convertFromSnakeCase将snake_cased密钥转换为camelBased属性
URL字符串被解码为URL
struct Root : Decodable {
let query : Query
let deals : [Deal]
private enum CodingKeys: String, CodingKey { case query, deals }
init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
query = try container.decode(Query.self, forKey: .query)
let dealData = try container.decode([[String:Deal]].self, forKey: .deals)
deals = dealData.map { $0["deal"]! }
}
}
struct Query : Decodable {
let total : Int
let page : Int
let perPage : Int
let location : Location
}
struct Location : Decodable {
let latitude, longitude : Double
}
struct Deal : Decodable {
let id : Int
let url : URL
let createdAt : Date
let expiresAt : Date?
}
假设data是JSON 的UTF8编码数据
let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .iso8601
decoder.keyDecodingStrategy = .convertFromSnakeCase
let result = try decoder.decode(Root.self, from: data)
print(result)