需要帮助解析嵌套的 JSON 数据

Question

我需要帮助来解析这个 JSON

{
  "products_and_categories" : {
    "new" : [
      {
        "id" : 173577,
        "image_url" : "\/\/assets.supremenewyork.com\/193786\/ca\/tMUMOnomKJI.jpg",
        "name" : "Penguins Hooded Fleece Jacket",
        "price" : 19800,
        "sale_price" : 0,
        "image_url_hi" : "\/\/assets.supremenewyork.com\/193786\/rc\/tMUMOnomKJI.jpg",
        "new_item" : true,
        "position" : 4,
        "category_name" : "Jackets"
      },
      {
        "id" : 173581,
        "image_url" : "\/\/assets.supremenewyork.com\/193727\/ca\/ywdDy1mQ51Q.jpg",
        "name" : "Side Logo Track Jacket ",
        "price" : 15800,
        "sale_price" : 0,
        "image_url_hi" : "\/\/assets.supremenewyork.com\/193727\/rc\/ywdDy1mQ51Q.jpg",
        "new_item" : true,
        "position" : 3,
        "category_name" : "Jackets"
      }
    ]
  }
}

我已经制作了这个结构来保存被解析的值

var modelsArray: [Products] = Array() //is Products the right one for the array?

struct Products: Codable {
    let products: Categories

    enum CodingKeys: String, CodingKey {
        case products = "products_and_categories"
    }
}

struct Categories: Codable {
    let new: [New]
}

struct New: Codable {
    let id: Int
    let name: String
    let price: Int
    let category: String
    let image: String

    enum CodingKeys: String, CodingKey {
        case id
        case name, price
        case category = "category_name"
        case image = "image_url_hi"
    }
}

let url = URL(string: "https://www.supremenewyork.com/shop.json")!
let request = URLRequest(url: url)
let session = URLSession.shared
session.dataTask(with: request) { (data, response, error) in
   if data = data {
// Having trouble with what to put here to append id, name, price, category, image for tableview
   }


}.resume()

但现在我被卡住了，我无法将其转换为附加我需要的数据的请求。本质上，我希望能够将 id、名称、价格、类别、图像放入 tableview 单元格中

Answer 1

我可能假设，您必须使用new array 来加载tableView 中的数据。所以，你需要定义你的modelsArray 之类的，

var modelsArray: [New] = Array()

然后像这样解析JSONdata，

session.dataTask(with: request) { (data, response, error) in
    if let data = data {
        do {
            let response = try JSONDecoder().decode(Products.self, from: data)
            modelsArray = response.products.new
            //reload your tableView here...
        } catch {
            print(error)
        }
    }
}.resume()