反序列化 Facebook API 响应答案

【问题标题】：Deserialize Facebook API Response反序列化 Facebook API 响应
【发布时间】：2015-04-20 11:21:41
【问题描述】：

我创建了一个 vb 程序，它发送 Facebook-API 请求并将其反序列化为我使用此创建的对象：

Dim PostList As JsonPostList = Deserializer.Deserialize(Of JsonPostList)(LoadJsonFromUrl("https://graph.facebook.com/" & Params("Userid") & "/feed?fields=id,message,type,actions,picture,link,created_time&limit=30&access_token=" + ACCESSTOKEN))

直到昨天，这一切都很好。今天早上，上面的代码返回“类型'System.String'不支持数组的反序列化。”

Facebook 响应中有什么变化吗？

LoadJsonFromUrl 只是将响应转换为字符串：

Private Function LoadJsonFromUrl(Url As String) As String

    Dim Text As String = ""

    ' --- Request --- '
    Dim Uri As Uri = New Uri(Url)
    Dim Request As HttpWebRequest = CType(WebRequest.Create(Uri), HttpWebRequest)
    Request.Method = WebRequestMethods.Http.Get
    Request.Timeout = 30000

    ' --- Response --- '
    Dim Response As HttpWebResponse = CType(Request.GetResponse(), HttpWebResponse)
    Dim Encoding As System.Text.Encoding = System.Text.Encoding.GetEncoding(Response.CharacterSet)

    ' --- Stream --- '
    Using Stream As IO.Stream = Response.GetResponseStream()

        Using Reader As StreamReader = New StreamReader(Stream, Encoding)
            Text = String.Copy(Reader.ReadToEnd())
        End Using

    End Using

    Response.Close()

    Logger.Write(Text, Logger.MessageType.Info)
    ' Return
    Return Text

End Function

我的课程：

Public Class JsonPostList

    Public data As List(Of JsonPostData)
    Public pageing As JsonPaging

End Class

Public Class JsonPostData

    Public id As String
    Public message As String
    Public type As String
    Public actions As String
    Public picture As String
    Public link As String
    Public created_time As String

End Class

Public Class JsonPaging

    Public [next] As String
    Public [previous] As String

End Class

【问题讨论】：

标签： json facebook api serialization response

【解决方案1】：

好的，显然在 facebook api 上的“actions”变成了一个 Array。我排除了操作，现在它工作正常。

【讨论】：