使用ObjectMapper映射key类型不同

1.前言: 今天遇到一个后台网络key值相同,而值类型不同的问题.如图所示
![](media/15338948412344/15338949888327.jpg)

2.解决方法

使用StaticMappable Protocol
class Message: StaticMappable {
    var message_type  = ""   // "Text",
    var user_id       = ""   // "a1ace6d8-0301-4ff7-8c4c-d29b0727fc48",
    var id            = ""   // "91fa4a75-da17-4786-9cce-2f753bdf2853",
    var origin        = ""   // "Student",
    var time          = ""   // "20180809T162722+0800"

    func mapping(map: Map) {
        message_type  <- map["message_type"]
        user_id       <- map["user_id"]
        id            <- map["id"]
        origin        <- map["origin"]
        time          <- map["time"]
    }

    static func objectForMapping(map: Map) -> BaseMappable? {
        if let type: String = map["message_type"].value() {
            switch type {
            case "Text":
                return TextMessage()
            case "Json":
                return VoiceMessage()
            default:
                return Message()
            }
        }
        return nil
    }}



class TextMessage: Message {
    var message = ""

    override func mapping(map: Map) {
        super.mapping(map: map)
        message <- map["message"]
    }}


class VoiceMessage: Message {
    var message: ResourceInfo?

    override func mapping(map: Map) {
        super.mapping(map: map)
        message <- map["message"]
    }}

extension VoiceMessage {
    class ResourceInfo: Mappable {
        var file_id        = ""   // "c067371c-e15f-43bf-a847-8b5b275aea1c",
        var file_name      = ""   // "1533803276392temp.arm",
        var url            = ""   // "/homeschool_chat/file/c067371c-e15f-43bf-a847-8b5b275aea1c",
        var file_size      = 0    // 2757,
        var content_type   = ""   // "voice/arm",
        var object_name    = ""   // "c067371c-e15f-43bf-a847-8b5b275aea1c",
        var bucket_name    = ""   // "chat"

        required init?(map: Map) {
        }
        func mapping(map: Map) {
            file_id       <- map["file_id"]
            file_name     <- map["file_name"]
            url           <- map["url"]
            file_size     <- map["file_size"]
            content_type  <- map["content_type"]
            object_name   <- map["object_name"]
            bucket_name   <- map["bucket_name"]
        }}
}