json - Swift 3 - 将模拟的 JSON 声明为来自服务器的响应

Question

我正在使用 swift 3.0 制作应用程序。但是我有一个问题，因为在 API REST 中仍然没有实现服务，我正在创建一个模拟的 JSON 来继续工作。但是，正如您将在图片中所有解释的最后看到的问题是，我不知道如何声明 JSON“-.- ....基本上程序将调用服务器并响应使用 JSON(现在我将它传递给“模拟”，您将在代码中看到它)。使用 JSON 将它与 ObjectMapper 映射到某些模型(我传递代码)，以便最终应用程序有一个对象。

Error declaring Simulated JSON

当 JSON 来自服务器或在本例中为模拟 JSON 时，我必须映射这三个模型。

首先是“LegendEntriesModel”:

import Foundation
import ObjectMapper
import AlamofireDomain

class LegendEntriesModel: Mappable {


fileprivate var _id_snapshot:     String?
fileprivate var _date:            String?
fileprivate var _deliverables:    [DeliverablesModel]?



init(){}

required init?(map: Map) { }

func mapping(map: Map) {
    self.id_snapshot      <- map["id_snapshot"]
    self.date             <- map["date"]
    self.deliverables     <- map["deliverables"]
}

var id_snapshot: String {
    get {
        if _id_snapshot == "" {
            _id_snapshot = ""
        }
        return _id_snapshot!
    }
    set {
        _id_snapshot = newValue
    }
}


var date: String {
    get {
        if _date == "" {
            _date = ""
        }
        return _date!
    }
    set {
        _date = newValue
    }
}


var deliverables: [DeliverablesModel] {
    get {
        if _deliverables == nil {
            _deliverables = []
        }
        return _deliverables!
    }
    set {
        _deliverables = newValue
    }
}



//MARK: RELEASE MEMORY BETWEEN OBJECT AND API REST (BROKE DEPENDENCIS)
func copy()->LegendEntriesModel {

    let legendEntriesModel  = LegendEntriesModel()

    legendEntriesModel.id_snapshot   = self.id_snapshot
    legendEntriesModel.date          = self.date
    legendEntriesModel.deliverables  = copyDeliverables()

    return legendEntriesModel
}

func copyDeliverables() -> [DeliverablesModel]{
    var newArray: [DeliverablesModel] = []
    for item in deliverables {
        newArray.append(item.copy())
    }
    return newArray
}
}

第二个是“DeliverablesModel”

import Foundation
import ObjectMapper
import AlamofireDomain

class DeliverablesModel: Mappable {


fileprivate var _id:              String?
fileprivate var _type:            String?
fileprivate var _url_layer:       String?
fileprivate var _options:         OptionsDeliverablesModel?



init(){}

required init?(map: Map) { }

func mapping(map: Map) {
    self.id               <- map["id"]
    self.type             <- map["type"]
    self.url_layer        <- map["url_layer"]
    self.options          <- map["options"]
}

var id: String {
    get {
        if _id == "" {
            _id = ""
        }
        return _id!
    }
    set {
        _id = newValue
    }
}


var type: String {
    get {
        if _type == "" {
            _type = ""
        }
        return _type!
    }
    set {
        _type = newValue
    }
}


var url_layer: String {
    get {
        if _url_layer == "" {
            _url_layer = ""
        }
        return _url_layer!
    }
    set {
        _url_layer = newValue
    }
}

var options: OptionsDeliverablesModel {
    get {
        if _options == nil {
            _options = OptionsDeliverablesModel()
        }
        return _options!
    }
    set {
        _options = newValue
    }
}

//MARK: RELEASE MEMORY BETWEEN OBJECT AND API REST (BROKE DEPENDENCIS)
func copy()->DeliverablesModel {

    let deliverablesModel  = DeliverablesModel()

    deliverablesModel.id         = self.id
    deliverablesModel.type       = self.type
    deliverablesModel.url_layer  = self.url_layer
    deliverablesModel.options    = self.options

    return deliverablesModel
}
}

最后一个是“OptionsDeliverablesModel”:

import Foundation
import ObjectMapper
import AlamofireDomain

class OptionsDeliverablesModel: Mappable {


fileprivate var _type:                 String?
fileprivate var _max_range:            Float?
fileprivate var _min_range:            Float?
fileprivate var _title:                String?
fileprivate var _initial_max_value:    Float?
fileprivate var _initial_min_value:    Float?
fileprivate var _id:                   String?



init(){}

required init?(map: Map) { }

func mapping(map: Map) {
    self.type                       <- map["type"]
    self.max_range                  <- map["max_range"]
    self.min_range                  <- map["min_range"]
    self.title                      <- map["title"]
    self.initial_max_value          <- map["initial_max_value"]
    self.initial_min_value          <- map["initial_min_value"]
    self.id                         <- map["id"]
}

var type: String {
    get {
        if _type == "" {
            _type = ""
        }
        return _type!
    }
    set {
        _type = newValue
    }
}


var max_range: Float {
    get {
        if _max_range == 0 {
            _max_range = 0
        }
        return _max_range!
    }
    set {
        _max_range = newValue
    }
}

var min_range: Float {
    get {
        if _min_range == 0 {
            _min_range = 0
        }
        return _min_range!
    }
    set {
        _min_range = newValue
    }
}


var title: String {
    get {
        if _title == "" {
            _title = ""
        }
        return _title!
    }
    set {
        _title = newValue
    }
}

var initial_max_value: Float {
    get {
        if _initial_max_value == 0 {
            _initial_max_value = 0
        }
        return _initial_max_value!
    }
    set {
        _initial_max_value = newValue
    }
}

var initial_min_value: Float {
    get {
        if _initial_min_value == 0 {
            _initial_min_value = 0
        }
        return _initial_min_value!
    }
    set {
        _initial_min_value = newValue
    }
}

var id: String {
    get {
        if _id == "" {
            _id = ""
        }
        return _id!
    }
    set {
        _id = newValue
    }
}




//MARK: RELEASE MEMORY BETWEEN OBJECT AND API REST (BROKE DEPENDENCIS)
func copy()->OptionsDeliverablesModel {

    let optionsDeliverablesModel  = OptionsDeliverablesModel()

    optionsDeliverablesModel.type               = self.type
    optionsDeliverablesModel.max_range          = self.max_range
    optionsDeliverablesModel.min_range          = self.min_range
    optionsDeliverablesModel.title              = self.title
    optionsDeliverablesModel.initial_max_value  = self.initial_max_value
    optionsDeliverablesModel.initial_min_value  = self.initial_min_value
    optionsDeliverablesModel.id                 = self.id

    return optionsDeliverablesModel
}
}

有了这三个“模型”，我就可以将 JSON 映射到 DAO 类中，但问题就出在这里，因为我不知道如何传递我模拟的 JSON。

代码如下:

import AlamofireDomain
import Alamofire
import ObjectMapper

class DeliverablesLegendDAO : SimpleDAO {

var deliverables = Dictionary<String, Any>()

deliverables = [{"legendEntries": [{"id_snapshot": "123","date": "2016-10-20","deliveries": [{"id": "12","type": "RGB","url_layer":"topp:states","options": [{"type": "range","max_range": 100,"min_range": 0,"title": "Option RGB","initial_max_value": 100,"initial_min_value": 0,"id": "depth"}]}]}]}]

func snapshots(_ parameters: String,
           callbackFuncionOK:    @escaping (LegendEntriesModel)->(),
           callbackFunctionERROR: @escaping (Int,NSError)->()) {



    Alamofire.request(parameters,
                      method: .post,
                      encoding: JSONEncoding.default)
        .responseJSON { response in
            if response.result.isSuccess{
                if let status = response.response?.statusCode {
                    switch(status){
                    case 200:
                        let value = response
                        let legendEntries = Mapper<LegendEntriesModel>().map(JSONObject: value)
                        callbackFuncionOK(legendEntries!)

                    default:
                        break
                    }
                }
            }

            else {
                var statusCode = -1
                if let _response = response.response {
                    statusCode = _response.statusCode
                }
                var nsError: NSError = NSError(domain: Constants.UNKNOWN_HTTP_ERROR_MSG,
                                               code: Constants.UNKNOWN_HTTP_ERROR_ID,
                                               userInfo: nil)
                if let _error = response.result.error {
                    nsError = _error as NSError
                }
                callbackFunctionERROR(statusCode,nsError)
            }

    }
}

}

正如您在图片中看到的，我声明我的模拟 JSON 是错误的，然后使用“LegendDeliveriesModel”将其映射到一个对象。我该怎么做？

Error declaring simulated JSON

如果你还需要什么，请告诉我。我重复一遍，问题出在 JSON 模拟语句中，我不知道如何将它传递给 DAO 并映射它。

Answer 1

您好，不确定您是否愿意接受，但最好尝试在文件中创建一个 JSON 并使用 Bundle 加载它，如下所示:

func loadJsonFrom(fileName: String) -> NSDictionary {

    let path = Bundle.main.path(forResource: filename, ofType: "json")
    let jsonData = try! Data(contentsOf: URL(fileURLWithPath: path!))
    let jsonResult: NSDictionary = try! JSONSerialization.jsonObject(with: jsonData, options: .allowFragments) as! NSDictionary
    return jsonResult
}