ios - Alamofire 对象映射器 : how to parse nested array in swift

Question

这是我的 api 响应:

[
    [
        {
            "id": 24,
            "request_id": "rqst5c130cae6f7609.41056231",
            "business_name": "Code Viable",
            "business_email": "code@viable.com",
            "title": "Load",
            "details": "load",
            "load_description": "load",
            "amount_offered": "1",
            "pickup_address": "load",
            "dropoff_address": "load",
            "timestamp": "2018-12-14 01:51:42"
        }
    ],
    [
        {
            "id": 27,
            "request_id": "rqst5c1325881836d2.98441728",
            "business_name": "Code Viable",
            "business_email": "code@viable.com",
            "title": "Load",
            "details": "brendan",
            "load_description": "test load for brendan",
            "amount_offered": "1222",
            "pickup_address": "Load",
            "dropoff_address": "Load",
            "timestamp": "2018-12-14 03:37:44"
        }
    ]
]

如您所见，它是一个包裹在数组内部的数组，我已经为内部数组设置了一个对象映射器，如下所示:

struct JobResponseDataObject: Mappable {

    init?(map: Map) {

    }

    var id: Int?
    var requestId: String?
    var businessName: String?
    var businessEmail: String?

    var title: String?
    var details: String?
    var loadDescription: String?
    var amountOffered: String?

    var pickUpAddress: String?
    var dropOffAddress: String?
    var timestamp: String?

    mutating func mapping(map: Map) {

        id              <- map["id"]
        requestId       <- map["request_id"]
        businessName    <- map["business_name"]
        businessEmail   <- map["business_email"]

        title           <- map["title"]
        details         <- map["details"]
        loadDescription <- map["load_description"]
        amountOffered   <- map["amount_offered"]

        pickUpAddress   <- map["pickup_address"]
        dropOffAddress  <- map["dropoff_address"]
        timestamp       <- map["timestamp"]
    }
}

如果父级为其子级数组命名，那么我将为顶层创建另一个映射器。但在这种情况下，外部数组没有名称，我需要做什么才能使 alamofire .responseArray 调用正常工作？

Alamofire.request(JOB_REQUEST_BASE_URL, method: .post, parameters: parameter, encoding: URLEncoding(), headers: nil).responseArray { (response: DataResponse<[JobResponseDataObject]>) in


            }
        }

谢谢

Answer 1

您的 JSON 对象具有嵌套数组。因此，要解析它，您可以通过两种方式进行。一种方法是将其解析为嵌套数组。

DataResponse<[[JobResponseDataObject]]>

您的代码将如下所示。

Alamofire.request(JOB_REQUEST_BASE_URL, method: .post, parameters: parameter, encoding: URLEncoding(), headers: nil).responseArray { (response: DataResponse<[JobResponseDataObject]>) in

//...

}

建议:目前我从JSON中了解到的，不应该是嵌套的Array。如果你只需要在嵌套数组中添加一个对象，你可以用简单的数组来实现。

第二种方式如果嵌套数组中只有一个对象。您也可以按如下方式解析它。

requestId       <- map["0.request_id"]

“0”。在这里获取内部数组的第一个对象。希望这会有所帮助:)