数据映射问题

Posted 2023-03-15

【中文标题】数据映射问题

【英文标题】：Data Mapping Issue

【发布时间】：2021-04-02 01:47:09

【问题描述】：

我正在尝试将数据从 API 映射到我的自定义类，但我在控制台中收到此错误“typeMismatch(Swift.Array, Swift.DecodingError.Context(codingPath: [], debugDescription: "Expected解码数组，但找到了字典。”，基础错误：无）。不知道为什么它在那里显示这个数组；我该如何解决这个问题。错误

struct News: Codable 
    var status: String?
    var totalResults: Int?
    var articles: [Article]?

    enum CodingKeys: String, CodingKey 
        case status = "status"
        case totalResults = "totalResults"
        case articles = "articles"
    


// MARK: - Article
struct Article: Codable 
    var source: Source?
    var author: String?
    var title: String?
    var articleDescription: String?
    var url: String?
    var urlToImage: String?
    var publishedAt: String?
    var content: String?

    enum CodingKeys: String, CodingKey 
        case source = "source"
        case author = "author"
        case title = "title"
        case articleDescription = "description"
        case url = "url"
        case urlToImage = "urlToImage"
        case publishedAt = "publishedAt"
        case content = "content"
    


 func getAllCountryNameFrom() 
        AF.request(self.baseURL + self.apiKeyPathCompononent, method: .get, parameters: nil, encoding: URLEncoding.default, headers: nil, interceptor: nil).response  (responseData) in
                guard let data = responseData.data else return
            do 
                let news = try self.jsonDecoder.decode(News.self, from: data)
                   print(news)
                 catch 
                    print(error)
                
                
            
        
        

【问题讨论】：

将您的data 附加为.utf8 字符串。

【参考方案1】：

试试这个网站/工具，https://app.quicktype.io/，它会生成一个 来自您的架构的模型 您可以使用https://proxyman.io/ 来跟踪您的响应 JSON