在根元素下包含值和字典的RestSharp反序列化

Question

我試圖構造POCO類，以便RestSharp可以反序列化特定的JSON結果。 該問題的關鍵似乎是，根對象同時包含一個nb_results關鍵字和其他關鍵字（「0：」，「1：」等每個都具有複數值）的字典。

我已經嘗試過Dictionary（Of Integer，mediaGalleryData）和Dictionary（Of String，mediaGalleryData）。兩者都不起作用。 nb_results總是序列化，但字典永遠不會。

{ 
    "nb_results": 2, 
    "0": { 
    "id": 51976254, 
    "title": "Bumblebee species Bombus terrestris", 
    "media_type_id": 1, 
    "creator_name": "paulrommer", 
    "creator_id": 201446851, 
    "thumbnail_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/51\/97\/62\/110_F_51976254_dVCbgGVey5xEuLkvk1e4vhnmPqxI4J0X.jpg", 
    "thumbnail_html_tag": "<img src=\"http:\/\/t1.ftcdn.net\/jpg\/00\/51\/97\/62\/110_F_51976254_dVCbgGVey5xEuLkvk1e4vhnmPqxI4J0X.jpg\" alt=\"Bumblebee species Bombus terrestris\" title=\"Photo: Bumblebee species Bombus terrestris\" width=\"110\" height=\"73\" \/>", 
    "thumbnail_width": 110, 
    "thumbnail_height": 73, 
    "affiliation_link": "http:\/\/api.fotolia.com\/id\/51976254", 
    "thumbnail_30_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/51\/97\/62\/30_F_51976254_dVCbgGVey5xEuLkvk1e4vhnmPqxI4J0X.jpg", 
    "thumbnail_30_width": 30, 
    "thumbnail_30_height": 20, 
    "thumbnail_110_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/51\/97\/62\/110_F_51976254_dVCbgGVey5xEuLkvk1e4vhnmPqxI4J0X.jpg", 
    "thumbnail_110_width": 110, 
    "thumbnail_110_height": 73, 
    "thumbnail_400_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/51\/97\/62\/400_F_51976254_dVCbgGVey5xEuLkvk1e4vhnmPqxI4J0X.jpg", 
    "thumbnail_400_width": 400, 
    "thumbnail_400_height": 267, 
    "licenses": [ 
     { 
     "name": "XS", 
     "price": 1 
     }, 
     { 
     "name": "S", 
     "price": 3 
     }, 
     { 
     "name": "M", 
     "price": 5 
     }, 
     { 
     "name": "L", 
     "price": 7 
     }, 
     { 
     "name": "XL", 
     "price": 8 
     }, 
     { 
     "name": "XXL", 
     "price": 10 
     }, 
     { 
     "name": "X", 
     "price": 100 
     } 
    ] 
    }, 
    "1": { 
    "id": 44488015, 
    "title": "Vintage Style Birds, Bees and Banners Vector Set", 
    "media_type_id": 3, 
    "creator_name": "artnerdluxe", 
    "creator_id": 203491263, 
    "thumbnail_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/44\/48\/80\/110_F_44488015_hvEpYPw8yILDsnAi6BChYWXtzmiH6jWd.jpg", 
    "thumbnail_html_tag": "<img src=\"http:\/\/t1.ftcdn.net\/jpg\/00\/44\/48\/80\/110_F_44488015_hvEpYPw8yILDsnAi6BChYWXtzmiH6jWd.jpg\" alt=\"Vintage Style Birds, Bees and Banners Vector Set\" title=\"Vector: Vintage Style Birds, Bees and Banners Vector Set\" width=\"105\" height=\"110\" \/>", 
    "thumbnail_width": 105, 
    "thumbnail_height": 110, 
    "affiliation_link": "http:\/\/api.fotolia.com\/id\/44488015", 
    "thumbnail_30_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/44\/48\/80\/30_F_44488015_hvEpYPw8yILDsnAi6BChYWXtzmiH6jWd.jpg", 
    "thumbnail_30_width": 29, 
    "thumbnail_30_height": 30, 
    "thumbnail_110_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/44\/48\/80\/110_F_44488015_hvEpYPw8yILDsnAi6BChYWXtzmiH6jWd.jpg", 
    "thumbnail_110_width": 105, 
    "thumbnail_110_height": 110, 
    "thumbnail_400_url": "http:\/\/t1.ftcdn.net\/jpg\/00\/44\/48\/80\/400_F_44488015_hvEpYPw8yILDsnAi6BChYWXtzmiH6jWd.jpg", 
    "thumbnail_400_width": 380, 
    "thumbnail_400_height": 400, 
    "licenses": [ 
     { 
     "name": "XS", 
     "price": 1 
     }, 
     { 
     "name": "S", 
     "price": 3 
     }, 
     { 
     "name": "M", 
     "price": 5 
     }, 
     { 
     "name": "L", 
     "price": 7 
     }, 
     { 
     "name": "XL", 
     "price": 8 
     }, 
     { 
     "name": "XXL", 
     "price": 10 
     }, 
     { 
     "name": "V", 
     "price": 5 
     }, 
     { 
     "name": "XV", 
     "price": 40 
     } 
    ] 
    } 
} 

這裏是班我到目前爲止：

Public Class mediaGallery 
    Public Property nb_results As Integer 
    Public Property results As Dictionary(Of String, mediaGalleryData) 
End Class 
Public Class mediaGalleryData 
    Public Property id As Integer 
    Public Property title As String 
    Public Property creator_name As String 
    Public Property creator_id As Integer 
    Public Property media_type_id As Integer 
    Public Property thumbnail_url As String 
    Public Property thumbnail_width As Integer 
    Public Property thumbnail_height As Integer 
    Public Property thumbnail_html_tag As String 
    Public Property thumbnail_30_url As String 
    Public Property thumbnail_30_width As Integer 
    Public Property thumbnail_30_height As Integer 
    Public Property thumbnail_110_url As String 
    Public Property thumbnail_110_width As Integer 
    Public Property thumbnail_110_height As Integer 
    Public Property thumbnail_400_url As String 
    Public Property thumbnail_400_width As Integer 
    Public Property thumbnail_400_height As Integer 
    Public Property licenses As List(Of licensedata) 
End Class 
Public Class licensedata 
    Public Property name As String 
    Public Property price As Integer 
End Class 

我RestSharp耗時代碼：

Public Function getUserGalleryMedias(page As Integer?, nb_per_page As Integer?, thumbnail_size As Integer?, id As String, detail_level As Integer?) As mediaGallery 
    Dim request = New RestRequest("user/getUserGalleryMedias", Method.GET) 
    If page.HasValue Then request.AddParameter("page", page.Value) 
    If nb_per_page.HasValue Then request.AddParameter("nb_per_page", nb_per_page.Value) 
    If thumbnail_size.HasValue Then request.AddParameter("thumbnail_size", thumbnail_size.Value) 
    If Not String.IsNullOrEmpty(id) Then request.AddParameter("id", id) 
    If detail_level.HasValue Then request.AddParameter("detail_level", detail_level.Value) 

    Return Execute(Of mediaGallery)(request) 
End Function 

Answer 1

我已經完成了我需要做的，但我不得不走了一段很長的路。

正如維基上的RestSharp documentation建議（但沒有很好解釋），我實現了IDeserializer來專門處理這個類。我必須單獨將SimpleJson添加到網站，因爲它在RestSharp中標記爲Friend。我只是在我的API類的Execute(Of T)方法中調用它，而不是將我的反序列化程序註冊爲RestClient的處理程序，而這隻需要我的反序列化程序來處理所有的類，只是T是麻煩的類。

的Execute(Of T)方法：

Public Function Execute(Of T As New)(request As RestRequest) As T 
    Dim client = New RestClient() 

    ' set up client with authenticator 
    client.BaseUrl = BaseURL 
    If String.IsNullOrEmpty(_sessionID) Then 
     client.Authenticator = New HttpBasicAuthenticator(_apikey, "") 
    Else 
     client.Authenticator = New HttpBasicAuthenticator(_apikey, _sessionID) 
    End If 

    ' used on every request 
    Dim response = client.Execute(Of T)(request) 

    ' Check for exceptions or bad status code 
    If response.ErrorException IsNot Nothing Then 
     Throw response.ErrorException 
    ElseIf response.StatusCode > 299 Then 
     If response.Content.StartsWith("{""error""") Then 
      Throw New Exception(String.Format("Status {0} {1} : {2}", response.StatusCode, response.StatusDescription, response.Content)) 
     Else 
      Throw New HttpException(response.StatusCode, response.StatusDescription) 
     End If 
    End If 

    ' Handle troublesome class 
    If GetType(T).Equals(GetType(mediaGallery)) Then 
     Dim fjs As New fotoliaJSONDeSerializer 
     response.Data = fjs.Deserialize(Of T)(response) 
    End If 

    Return response.Data 
End Function 

解串器類：

''' <summary> 
    ''' specific to the FotoliaAPI.mediaGallery we actually want to handle 
    ''' </summary> 
    ''' <param name="response"></param> 
    ''' <returns></returns> 
    ''' <remarks></remarks> 
    Private Function DeserializeMediaLibrary(response As IRestResponse) As FotoliaAPI.mediaGallery 
     Dim result As New FotoliaAPI.mediaGallery 

     ' turn to an iDictionary so we can readily enumerate keys 
     Dim j As IDictionary(Of String, Object) = CType(SimpleJSON.SimpleJson.DeserializeObject(response.Content), IDictionary(Of String, Object)) 

     For Each key In j.Keys 
      ' this top level key is a direct property 
      If key = "nb_results" Then 
       result.nb_results = j(key) 
      Else 
       ' all other keys become members of the list. 
       ' Turn the value back to a string, then feed it back into SimpleJson to deserialize to the strongly typed subclass. 
       result.media.Add(_ 
        SimpleJSON.SimpleJson.DeserializeObject(Of FotoliaAPI.mediaGalleryData)(_ 
         j(key).ToString)) 
      End If 
     Next 

     Return result 

    End Function 

    ' required but unimportant properties of IDeserializer 
    Public Property DateFormat As String Implements Deserializers.IDeserializer.DateFormat 
    Public Property [Namespace] As String Implements Deserializers.IDeserializer.Namespace 
    Public Property RootElement As String Implements Deserializers.IDeserializer.RootElement 
End Class