Json 如何使用；addAttributeMappings“；在RestKit中？

我的json响应不仅包含字符串，还包含DTO数组。对象映射的格式不正确

json响应主体： 下面给出的是我的实体模型。（请注意，dynamicTableDetailDTOList是DTO的数组）： 在我的ViewController中，调用回调方法， 在LoanDetailService类中，实现了与服务调用相关的所有代码：

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如何更改实体模型？以下内容解决了我的问题：

在LoanDetailServiceClass中

func getLoanDetails(success: @escaping((_ loanDetailModel: LoanDetailModel?) -> ()),
                failure: @escaping ((_ error:String) -> ())) {

    // Define mappings
    let postMapping: RKObjectMapping = RKObjectMapping(for: LoanDetailModel.self)
    postMapping.addAttributeMappings(from: ["id","componentName"])

    let dTOListMapping: RKObjectMapping = RKObjectMapping(for: DynamicTableDetailDTOList.self)
    dTOListMapping.addAttributeMappings(from: ["fieldName",
                                               "fieldType",
                                               "label"])
    postMapping.addRelationshipMapping(withSourceKeyPath: "DynamicTableDetailDTOList" ,
                                       mapping: dTOListMapping)

    // Define response decriptor
    let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
    let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: nil, keyPath: nil, statusCodes: statusCodes)

    // Create object manager
    let url = URL(string: baseURL)
    let jsonPlaceholderManager = RKObjectManager(baseURL: url)
    jsonPlaceholderManager?.addResponseDescriptor(resDescriptor)
    RKObjectManager.setShared(jsonPlaceholderManager)

    // Perform GET request
    RKObjectManager.shared().getObjectsAtPath(appendedURL, parameters: nil, success: { (operation, mappingResult) -> Void in
        let loanDetailModel: LoanDetailModel = mappingResult!.firstObject as! LoanDetailModel
        success(loanDetailModel)

    }) { (operation, error) -> Void in
        failure((error?.localizedDescription)!)
    }
}

class LoanDetailModel: NSObject {

    var id:Any?
    var componentName = ""
    var dynamicTableDetailDTOList:[DynamicTableDetailDTOList] = []
}

class DynamicTableDetailDTOList: NSObject {

    var id:Int?
    var fieldName:String = ""
    var fieldType:String = ""
    var isJoin:Bool?
    var length:Int?
    var label:String = ""
    var isrequired:Bool?
    var searchable:Bool?
}

override func viewDidLoad() {
    super.viewDidLoad()

    let loanDetailService = LoanDetailService()
    loanDetailService.getLoanDetails(success: { (model) in
        self.loanDetailModel = model!
        self.loanDetailTable.reloadData()
    })
    { (errorString) in
        let alert = UIAlertController(title: "Alert",
                                      message: errorString,
                                      preferredStyle: UIAlertControllerStyle.alert)
        alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

func getLoanDetails(success: @escaping((_ loanDetailModel: LoanDetailModel?) -> ()),
                    failure: @escaping ((_ error:String) -> ())) {

    // Define mappings
    let postMapping: RKObjectMapping = RKObjectMapping(for: LoanDetailModel.self)
    postMapping.addAttributeMappings(from: ["id", "componentName", "dynamicTableDetailDTOList"])


    // Define response decriptor
    let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
    let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: nil, keyPath: nil, statusCodes: statusCodes)

    // Create object manager
    let url = URL(string: baseURL)
    let jsonPlaceholderManager = RKObjectManager(baseURL: url)
    jsonPlaceholderManager?.addResponseDescriptor(resDescriptor)
    RKObjectManager.setShared(jsonPlaceholderManager)

    // Perform GET request
    RKObjectManager.shared().getObjectsAtPath(appendedURL, parameters: nil, success: { (operation, mappingResult) -> Void in
        let loanDetailModel: LoanDetailModel = mappingResult!.firstObject as! LoanDetailModel
        success(loanDetailModel)

    }) { (operation, error) -> Void in
        failure((error?.localizedDescription)!)
    }

}

func getLoanDetails(success: @escaping((_ loanDetailModel: LoanDetailModel?) -> ()),
                failure: @escaping ((_ error:String) -> ())) {

    // Define mappings
    let postMapping: RKObjectMapping = RKObjectMapping(for: LoanDetailModel.self)
    postMapping.addAttributeMappings(from: ["id","componentName"])

    let dTOListMapping: RKObjectMapping = RKObjectMapping(for: DynamicTableDetailDTOList.self)
    dTOListMapping.addAttributeMappings(from: ["fieldName",
                                               "fieldType",
                                               "label"])
    postMapping.addRelationshipMapping(withSourceKeyPath: "DynamicTableDetailDTOList" ,
                                       mapping: dTOListMapping)

    // Define response decriptor
    let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
    let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: nil, keyPath: nil, statusCodes: statusCodes)

    // Create object manager
    let url = URL(string: baseURL)
    let jsonPlaceholderManager = RKObjectManager(baseURL: url)
    jsonPlaceholderManager?.addResponseDescriptor(resDescriptor)
    RKObjectManager.setShared(jsonPlaceholderManager)

    // Perform GET request
    RKObjectManager.shared().getObjectsAtPath(appendedURL, parameters: nil, success: { (operation, mappingResult) -> Void in
        let loanDetailModel: LoanDetailModel = mappingResult!.firstObject as! LoanDetailModel
        success(loanDetailModel)

    }) { (operation, error) -> Void in
        failure((error?.localizedDescription)!)
    }
}