问在4中使用JSONDecoder

EN

class Hits: Codable { 
    let hits: [Hit] 

    init(hits: [Hit]) { 
       self.hits = hits 
    } 
}

class Hit: Codable { 
    let recipe: String 
    let uri: String 
    let label: String 
    let image: String 
    let source: String 
    let url: String 
    let shareAs: String 
    let yield: String 

    init(recipe: String, uri: String, label: String, image: String, source: String, url: String, shareAs: String, yield: String) {
        self.recipe = recipe 
        self.uri = uri 
        self.label = label 
        self.image = image 
        self.source = source 
        self.url = url 
        self.shareAs = shareAs 
        self.yield = yield
    }
}

func downloadJSON() { 
    guard let downloadURL = url else {return}   
    URLSession.shared.dataTask(with: downloadURL) { (data, urlResponse, error) in 
       guard let data = data, error == nil, urlResponse != nil else { print("Something is wrong"); return } 
       print("download completed") 
       do { 
          let decoder = JSONDecoder() 
          let foods = try decoder.decode([Hits].self, from: data)  
          print(foods) 
       } catch { 
          print(error) 
       } 
   }.resume()
}