类型'AllImage'未遵循'Decodable'/'Encodable'协议的解决办法

你遇到的报错核心原因是：AllImage结构体的CodingKeys枚举中声明了ctaInfo = "cta_info"这个编码键，但结构体本身并没有定义对应的ctaInfo属性。Codable协议要求编码/解码的键必须和结构体的属性一一对应，这种不匹配直接导致了协议不兼容的错误。

针对这个问题，有两种明确的解决方案：

• 方案一：如果接口返回的JSON中确实包含cta_info字段，且需要解析这个字段，就在结构体中添加对应的可选属性：

struct AllImage: Codable {
    let mediaReferenceID: String?
    let url: String?
    let title: String?
    let description: String?
    let icon: String?
    let tags: [TagInfo]?
    let footerSection: FooterSection?
    // 添加与CodingKeys匹配的属性，类型根据实际返回值调整
    let ctaInfo: String?

    enum CodingKeys: String, CodingKey {
        case mediaReferenceID = "media_reference_id"
        case url, title, description, icon
        case ctaInfo = "cta_info"
        case footerSection = "footer_section"
    }
}

• 方案二：如果不需要解析cta_info字段，直接删除CodingKeys中多余的ctaInfo条目即可：

struct AllImage: Codable {
    let mediaReferenceID: String?
    let url: String?
    let title: String?
    let description: String?
    let icon: String?
    let tags: [TagInfo]?
    let footerSection: FooterSection?

    enum CodingKeys: String, CodingKey {
        case mediaReferenceID = "media_reference_id"
        case url, title, description, icon
        case footerSection = "footer_section"
    }
}

内容的提问来源于stack exchange，提问作者Arnab Datta