Swift Parse JSON 错误：没有与键 CodingKeys 关联的值（stringValue：\\"_source\\

Question

I am attempting to parse the following json data:

Below is my struct:

struct Album: Decodable {
    var source: [Sourcet]
    enum CodingKeys: String, CodingKey {
        case source = "_source"
    }
}

struct Sourcet: Decodable {
    var nome, endereco, uf, cidade, bairro: String
}

let response = try JSONDecoder().decode(Album.self, from: data)

I continue getting the error:

keyNotFound(CodingKeys(stringValue: "_source", intValue: nil), Swift.DecodingError.Context(codingPath: [], debugDescription: "No value associated with key CodingKeys(stringValue: \\"_source\\", intValue: nil) (\\"_source\\").", underlyingError: nil))

Is this due to the json information being an array?.How would I be able to parse this information?

Answer 1

Your struct Album is wrong and you're parsing Album.self single object instead of array.

Try below code :

struct Album: Decodable {
    var source: Sourcet // change array to single object
    enum CodingKeys: String, CodingKey {
        case source = "_source"
    }
}

struct Sourcet: Decodable {
    var nome, uf : String
}

To parse json in model :

do {
      let response = try JSONDecoder().decode([Album].self, from: data)
      for item in response {
          print(item.source.nome)
      }
   }catch{
          print("Error: ",error)
   }