TMDb API 调用 - Swift

我正在打电话TMDb Api按类型获取一系列电影。我想访问的许多属性都返回“nil”，例如“vote_count”、“poster_path”和“vote_average”。

如果我在浏览器中调用 api，我会按预期获得所有属性。

这是我的模型：

import Foundation

// MARK: - MovieList
struct MovieList: Codable {
    let page: Int
    let totalResults: Int?
    let totalPages: Int?
    let results: [Result]

    enum CodingKeys: String, CodingKey {
        case page
        case totalResults = "total_results"
        case totalPages = "total_pages"
        case results
    }
}

// MARK: - Result
struct Result: Codable {
    let popularity: Double?
    let voteCount: Int?
    let video: Bool?
    let posterPath: String?
    let id: Int?
    let adult: Bool?
    let backdropPath: String?
    let originalLanguage: OriginalLanguage?
    let originalTitle: String?
    let genreIDS: [Int]?
    let title: String?
    let voteAverage: Double?
    let overview, releaseDate: String?

    enum CodingKeys: String, CodingKey {
        case popularity
        case voteCount = "vote_count"
        case video
        case posterPath = "poster_path"
        case id, adult
        case backdropPath = "backdrop_path"
        case originalLanguage = "original_language"
        case originalTitle = "original_title"
        case genreIDS = "genre_ids"
        case title
        case voteAverage = "vote_average"
        case overview
        case releaseDate = "release_date"
    }
}

enum OriginalLanguage: String, Codable {
    case en = "en"
    case es = "es"
}

这是网络调用：

func getMovieDetails(movie: Int, completion: @escaping (Result?) -> ()) {

        guard let url = URL(string: "https://api.themoviedb.org/3/movie/157336?api_key=6228bff945f7bd2m18c04fc3839829c0") else {
            fatalError("Invalid URL")
        }

            let config = URLSessionConfiguration.default
            let session = URLSession(configuration: config)

            let task = session.dataTask(with: url) { data, response, error in

                // Check for errors
                guard error == nil else {
                    print ("error: \(error!)")
                    return
                }
                // Check that data has been returned
                guard let data = data else {
                    print("No data")
                    return
                }

                do {

                    let decoder = JSONDecoder()
                    decoder.keyDecodingStrategy = .convertFromSnakeCase
                    let movieDetails = try decoder.decode(Result.self, from: data)

                    DispatchQueue.main.async {

                       completion(movieDetails)
                        print(movieDetails)

                    }

                } catch let err {
                    print("Err", err)
                }
            }
            // execute the HTTP request
            task.resume()
        }
    }

这是回应：

MovieList(page: 1, totalResults: nil, totalPages: nil, results: [QuickFlicks.Result(popularity: Optional(171.78), voteCount: nil, video: Optional(false), posterPath: nil, id: Optional(454626), adult: Optional(false), backdropPath: nil, originalLanguage: nil, originalTitle: nil, genreIDS: nil, title: Optional("Sonic the Hedgehog"), voteAverage: nil, overview: Optional("Based on the global blockbuster videogame franchise from Sega, Sonic the Hedgehog tells the story of the world’s speediest hedgehog as he embraces his new home on Earth. In this live-action adventure comedy, Sonic and his new best friend team up to defend the planet from the evil genius Dr. Robotnik and his plans for world domination."), releaseDate: nil)])

任何帮助，将不胜感激。谢谢。

您向解码器发出相互矛盾的指令，首先您有 CodingKeys 枚举，例如posterPath属性应该从poster_path键，然后你设置keyDecodingStrategy = .convertFromSnakeCase这意味着解码器首先翻译密钥poster_path to posterPath before尝试将密钥与属性相匹配。

所以要么删除decoder.keyDecodingStrategy = .convertFromSnakeCase或删除CodingKeys enum