我在解析此json文件时遇到问题
{"window":60,"version":200,"timestamp":1582886130,"body":{"totals":{"count":1,"offset":0},"audio_clips":[{"id":7515224,"title":"The West Ham Way Podcast - We`re back!","description":"This is a message from Dave to confirm that the boys are back....\nThe show will be recorded EVERY Wednesday and published on the same night. Please subscribe to this Podcast on your preferred platform and get the West Ham Way back to where they were before it was taken away from them.\nAs always, thanks for your support. COYI!\n@DaveWalkerWHU\n@ExWHUemployee","updated_at":"2020-02-27T11:44:18.000Z","user":{"id":5491115,"username":null,"urls":{"profile":"https://audioboom.com/users/5491115","image":"https://images.theabcdn.com/i/composite/%231c5fc7/150x150/avatars%2Fsmile-1.svg","profile_image":{"original":"https://images.theabcdn.com/i/composite/%231c5fc7/150x150/avatars%2Fsmile-1.svg"}}},"link_style":"channel","channel":{"id":5019730,"title":"The West Ham Way Podcast","urls":{"detail":"https://audioboom.com/channels/5019730","logo_image":{"original":"https://images.theabcdn.com/i/36150002"}}},"duration":32.4895,"mp3_filesize":575908,"uploaded_at":"2020-02-26T13:01:01.000Z","recorded_at":"2020-02-26T13:01:01.000+00:00","uploaded_at_ts":1582722061,"recorded_at_ts":1582722061,"can_comment":false,"can_embed":true,"category_id":283,"counts":{"comments":0,"likes":0,"plays":12},"urls":{"detail":"https://audioboom.com/posts/7515224-the-west-ham-way-podcast-we-re-back","high_mp3":"https://audioboom.com/posts/7515224-the-west-ham-way-podcast-we-re-back.mp3","image":"https://images.theabcdn.com/i/36150892","post_image":{"original":"https://images.theabcdn.com/i/36150892"},"wave_img":"https://images.theabcdn.com/i/w/8560839"},"image_attachment":36150892}]}}
目前，我只是想从json中获取标题和描述，但我一直收到错误消息
keyNotFound(CodingKeys(stringValue: "audioclips", intValue: nil), Swift.DecodingError.Context(codingPath: [CodingKeys(stringValue: "body", intValue: nil)], debugDescription: "No value associated with key CodingKeys(stringValue: \"audioclips\", intValue: nil) (\"audioclips\").", underlyingError: nil))
这是我尝试解析json的类
import UIKit
class PodcastViewController: UIViewController {
struct Root : Decodable {
var body : Body
}
struct Body : Decodable {
enum Codingkeys : String, CodingKey {
case audioclips = "audio_clips"
}
var audioclips : [Clips]
}
struct Clips : Decodable{
enum CodingKeys : String, CodingKey {
case title = "title"
case description = "description"
}
var title : String
var description : String
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
let url = URL(string: "https://api.audioboom.com/channels/5019730/audio_clips?api_version=1")!
URLSession.shared.dataTask(with: url) {data, response, error in
if let data = data {
print("DATA EXISTS")
do {
let result = try JSONDecoder().decode(Root.self, from: data)
print(result)
} catch {
// print("error while parsing:\(error.localizedDescription)")
print(error)
}
}
}.resume()
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destination.
// Pass the selected object to the new view controller.
}
*/
}
即使我将其重命名为audio_clips，也无法找到为什么说音频剪辑键的任何想法
答案 0 :(得分：2)
为了被检测和使用，您的编码密钥必须具有正确的名称，即CodingKeys而不是Codingkeys（大写的“ K”）：
struct Body : Decodable {
enum CodingKeys : String, CodingKey {
case audioclips = "audio_clips"
}
var audioclips : [Clips]
}
答案 1 :(得分：1)
根据您的回复，这可能是您的Codable结构。尝试使用以下结构进行解析。
// MARK: - Response
struct Response: Codable {
let window, version, timestamp: Int
let body: Body
}
// MARK: - Body
struct Body: Codable {
let totals: Totals
let audioClips: [AudioClip]
enum CodingKeys: String, CodingKey {
case totals
case audioClips = "audio_clips"
}
}
// MARK: - AudioClip
struct AudioClip: Codable {
let id: Int
let title, audioClipDescription, updatedAt: String
let user: User
let linkStyle: String
let channel: Channel
let duration: Double
let mp3Filesize: Int
let uploadedAt, recordedAt: String
let uploadedAtTs, recordedAtTs: Int
let canComment, canEmbed: Bool
let categoryID: Int
let counts: Counts
let urls: AudioClipUrls
let imageAttachment: Int
enum CodingKeys: String, CodingKey {
case id, title
case audioClipDescription = "description"
case updatedAt = "updated_at"
case user
case linkStyle = "link_style"
case channel, duration
case mp3Filesize = "mp3_filesize"
case uploadedAt = "uploaded_at"
case recordedAt = "recorded_at"
case uploadedAtTs = "uploaded_at_ts"
case recordedAtTs = "recorded_at_ts"
case canComment = "can_comment"
case canEmbed = "can_embed"
case categoryID = "category_id"
case counts, urls
case imageAttachment = "image_attachment"
}
}
// MARK: - Channel
struct Channel: Codable {
let id: Int
let title: String
let urls: ChannelUrls
}
// MARK: - ChannelUrls
struct ChannelUrls: Codable {
let detail: String
let logoImage: Image
enum CodingKeys: String, CodingKey {
case detail
case logoImage = "logo_image"
}
}
// MARK: - Image
struct Image: Codable {
let original: String
}
// MARK: - Counts
struct Counts: Codable {
let comments, likes, plays: Int
}
// MARK: - AudioClipUrls
struct AudioClipUrls: Codable {
let detail: String
let highMp3: String
let image: String
let postImage: Image
let waveImg: String
enum CodingKeys: String, CodingKey {
case detail
case highMp3 = "high_mp3"
case image
case postImage = "post_image"
case waveImg = "wave_img"
}
}
// MARK: - User
struct User: Codable {
let id: Int
let username: String?
let urls: UserUrls
}
// MARK: - UserUrls
struct UserUrls: Codable {
let profile: String
let image: String
let profileImage: Image
enum CodingKeys: String, CodingKey {
case profile, image
case profileImage = "profile_image"
}
}
// MARK: - Totals
struct Totals: Codable {
let count, offset: Int
}
答案 2 :(得分：1)
只需替换CodingKeys（大写的“ K”）而不是Codingkeys（小写的“ K”）
enum CodingKeys : String, CodingKey {
case audioclips = "audio_clips"
}