Swift 解析的json中unicode的问题（\u）

https://www.jianshu.com/p/ea99580ea30f

func mapJSON(failsOnEmptyData: Bool = true) throws -> Any {
        do {
//            return try JSONSerialization.jsonObject(with: data, options: .allowFragments)
            do {
                    if let str = String(data: data, encoding: .utf8)
                    {
                        guard let transformStr = str.applyingTransform(StringTransform(rawValue: "Any-Hex/Java"), reverse: true) else {
                            return NSNull()
                        }
                        let data = transformStr.data(using: .utf8)
                        do {
                            let obj = try JSONSerialization.jsonObject(with: data!, options: .fragmentsAllowed)
                            return obj
                        } catch {
                            throw MoyaError.jsonMapping(self)
                        }
                    }
                    
                } catch  {
                    throw MoyaError.jsonMapping(self)
                }
        } catch {
            if data.count < 1 && !failsOnEmptyData {
                return NSNull()
            }
            throw MoyaError.jsonMapping(self)
        }
        throw MoyaError.jsonMapping(self)
    }

func unicodeString(_ str: String) -> String {
    let mutableStr = NSMutableString(string: str) as CFMutableString
    CFStringTransform(mutableStr, nil, "Any-Hex/Java" as CFString, true)
    return mutableStr as String
}

1. 先将data转string，然后转unicode，最后转utf8
2. 再json解析就可