Swift JSON编码问题
我试图在swift中解码一些JSON,但我一直得到一个错误,我假设这是因为我的结构编写不正确。有什么想法吗?我正在调用这个API 以下是json解码调用:Swift JSON编码问题,json,swift,encode,Json,Swift,Encode,我试图在swift中解码一些JSON,但我一直得到一个错误,我假设这是因为我的结构编写不正确。有什么想法吗?我正在调用这个API 以下是json解码调用: func fetchPokemonImages() { for var pokemons in self.Pokemons { let defaultSession = URLSession(configuration: .default)
func fetchPokemonImages() {
for var pokemons in self.Pokemons {
let defaultSession = URLSession(configuration: .default)
if let url = URL(string: pokemons.url) {
let request = URLRequest(url: url)
let dataTask = defaultSession.dataTask(with: request) { (data, response, error) in
guard let pokemonImage = try? JSONDecoder().decode(PokemonImageList.self, from: data!) else {
print(error)
return
}
DispatchQueue.main.async {
self.PokemonsImage.append(contentsOf: pokemonImage.sprites)
self.PokemonTableView.reloadData() }
}
dataTask.resume()
}
}
}
以下是我的结构:
struct PokemonImage: Codable {
let back_default: String
enum CodingKeys: String, CodingKey {
case backDefault = "back_default"
}
init(backDefault: String) {
self.backDefault = backDefault
}
init(from decoder: Decoder) throws {
let postsContainer = try decoder.container(keyedBy: CodingKeys.self)
backDefault = try postsContainer.decode(String.self, forKey: .backDefault)
}
}
struct PokemonImageList: Codable {
let sprites: [PokemonImage]
enum CodingKeys: String, CodingKey {
case sprites
}
}
从API中,您的共享
精灵是一个对象,而不是数组
"sprites": {
"back_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/1.png",
"back_female": null,
"back_shiny": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/shiny/1.png",
"back_shiny_female": null,
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/1.png",
"front_female": null,
"front_shiny": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/shiny/1.png",
"front_shiny_female": null,
"other": {
"dream_world": {
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/other/dream-world/1.svg",
"front_female": null
},
"official-artwork": {
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/other/official-artwork/1.png"
}
}
struct PokemonImageList: Codable {
let sprites: PokemonImage
enum CodingKeys: String, CodingKey {
case sprites
}
}
所以PokemonImageList中的精灵应该是一个对象,而不是数组
"sprites": {
"back_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/1.png",
"back_female": null,
"back_shiny": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/back/shiny/1.png",
"back_shiny_female": null,
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/1.png",
"front_female": null,
"front_shiny": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/shiny/1.png",
"front_shiny_female": null,
"other": {
"dream_world": {
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/other/dream-world/1.svg",
"front_female": null
},
"official-artwork": {
"front_default": "https://raw.githubusercontent.com/PokeAPI/sprites/master/sprites/pokemon/other/official-artwork/1.png"
}
}
struct PokemonImageList: Codable {
let sprites: PokemonImage
enum CodingKeys: String, CodingKey {
case sprites
}
}
错误消息是什么?为什么您仍在执行try?
而不是try
?您是否知道解码失败时打印的错误是闭包的参数,因此与解码无关。我认为这可能是问题所在,谢谢。我现在有另一个错误,与将可编码对象pokemonImage
附加到数组pokemonismage
有关。(实例方法“append(contentsOf:)”要求“PokemonImage”符合“Sequence”)使用append(unewelement:Element)来追加1个对象,append(contentsOf:)用于追加数组