Question

我有这样的结构：

struct OrderLine: Codable{
    let absUrl: String?
    let restApiUrl : String?
    let description : String?
    let quantity : Int?
    let subscription: Subs?
    let total: Double?
 }

struct Subs: Codable{
    let quantity: Int?
    let name: String?
}

和一些OrderLine在服务器响应中

"subscription": {
   "quantity": 6,
   "name": "3 Months"
},

但有时它具有String类型：

"subscription": "",

没有subscription的话一切正常，但是出现错误

CodingKeys(stringValue: "subscription", intValue: nil)], 
   debugDescription: "Expected to decode Dictionary<String, Any> 
   but found a string/data instead.", underlyingError: nil)

所以我的问题是-如何解码或解码为值String?的{{1}}或解码为""而没有任何错误？ ps。如果我仅像Subs?那样解码，则会出现错误String?

Answer 1

您只需要自己实现init(from:)并尝试将subscription密钥的值解码为代表Dictionary的{{1}}和Subs即可。

String

swift 4 Codable-如果有字符串或字典，如何解码？

1 个答案: