使用WCF REST Toolkit使用ReadAsDataContract的问题

时间:2011-08-22 18:09:35

标签: wcf rest datacontractserializer

我是序列化的新手,我遇到了一个问题。我有一个REST服务,它返回一个IDDescriptionPair对象数组。在使用服务时,我使用“将XML粘贴为类型”VS加载项来创建对象。我只修改此对象以添加DataContract属性,以便我的命名空间在每一端都匹配。这是对象:

Imports System.Runtime.Serialization

<DataContract([Name]:="IDDescriptionPair", [Namespace]:="http://schemas.datacontract.org/2004/07/Blizzard.ClassLibrary")>
<System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "4.0.30319.225"), _
 System.Diagnostics.DebuggerStepThroughAttribute(), _
 System.Xml.Serialization.XmlTypeAttribute([Namespace]:="http://schemas.datacontract.org/2004/07/Blizzard.ClassLibrary"), _
 System.Xml.Serialization.XmlRootAttribute   ([Namespace]:="http://schemas.datacontract.org/2004/07/Blizzard.ClassLibrary", IsNullable:=True)> _
Partial Public Class IDDescriptionPair

  Private descriptionField As String

  Private idField As Integer

  Private idFieldSpecified As Boolean

  '''<remarks/>
  <System.Xml.Serialization.XmlElementAttribute(IsNullable:=True)> _
  Public Property Description() As String
    Get
      Return Me.descriptionField
    End Get
    Set(value As String)
      Me.descriptionField = value
    End Set
  End Property

  '''<remarks/>
  Public Property ID() As Integer
    Get
      Return Me.idField
    End Get
    Set(value As Integer)
      Me.idField = value
    End Set
  End Property

  '''<remarks/>
  <System.Xml.Serialization.XmlIgnoreAttribute()> _
  Public Property IDSpecified() As Boolean
    Get
      Return Me.idFieldSpecified
    End Get
    Set(value As Boolean)
      Me.idFieldSpecified = value
    End Set
  End Property
End Class

我可以调用该服务并反序列化该对象,它似乎工作正常。我得到了正确数量的IDDescriptionPair对象的列表。问题是它们都是空白的 - 没有填充任何属性。

这是我使用服务的代码:

Dim client As New HttpClient()
Dim endpoint As New Uri("http://bmpscnt410a/services/v1/personservices/offices/5/principals")

Using response As HttpResponseMessage = client.Get(endpoint)
  response.EnsureStatusIsSuccessful()

  Dim idp As List(Of IDDescriptionPair)
  Try
    idp = response.Content.ReadAsDataContract(Of List(Of IDDescriptionPair))()
  Catch ex As Exception
  End Try
End Using

我已经尝试过直接使用DataContractSerializer,但我得到了相同的结果(我想这是预期的)。任何想法都将不胜感激。

1 个答案:

答案 0 :(得分:1)

您使用的类型是XmlSerializer类型(使用System.Xml.Serialization命名空间中的属性进行注释,例如<XmlType()><XmlRoot()>等等。为此,您需要使用XmlSerializer对其进行反序列化。如果您包含(导入)命名空间System.Xml.Serialization,您应该获得扩展方法ReadAsXmlSerializable,这是您应该用来反序列化响应的方法。