在VB.NET中从Http POST接收XML文件

Question

我试图在VB.NET中从Http POST接收XML文件（我正在通过POSTMAN发送XML）。

我已经为MVC做到了，但是对于Web Form我需要它。这是我在MVC中的代码（工作正常）：

'POST api/postsamlendpoint
    <HttpPost()>
    Function SamlEndpoint() As ActionResult

        Dim xml As String

        Dim Cert As X509Certificate2 = New X509Certificate2("C:\Users\jgarcia\Desktop\SAMLEndpointTest\SAMLEndpointTest\Certificate.cer")

        'Receive the XML as String
        Dim reader As StreamReader
        reader = New StreamReader(Request.InputStream)
        xml = reader.ReadToEnd

        'Convert from String to XElement
        Dim xmlFile As XmlDocument = New XmlDocument()
        xmlFile.PreserveWhitespace = True
        xmlFile.LoadXml(xml)

        'Verify the signature
        Dim result As Boolean = VerifyXmlFile(xmlFile, Cert)

        'Extract the User ID
        Dim xmlDoc As XDocument = New XDocument()
        xmlDoc = XDocument.Parse(xmlFile.OuterXml)
        Dim UserID As String = CType(xmlDoc.Descendants().Where(Function(x) x.Name.LocalName = "NameID").FirstOrDefault(), String)

        Return View("SamlEndpoint", UserID)

    End Function

    Private Function VerifyXmlFile(ByRef doc As XmlDocument, cert As X509Certificate2) As Boolean

        'Check the arguments.  
        If (doc Is Nothing) Then
            Throw New ArgumentNullException("Doc")
        End If

        'Create a New SignedXml object And pass it the XML document class.
        Dim signedXml As New SignedXml(doc)

        Try
            'Find the "Signature" node And create a New XmlNodeList object.
            Dim nodeList As XmlNodeList = doc.GetElementsByTagName("ds:Signature")

            'Load the signature node.
            signedXml.LoadXml(DirectCast(nodeList(0), XmlElement))

            'Check the signature And return the result.
            Dim isvalid As Boolean
            isvalid = signedXml.CheckSignature(cert, True)
            Return isvalid

        Catch ex As Exception
            'Console.WriteLine("Error verifying the signature!" + Environment.NewLine);
            Return False

        End Try
    End Function

我只需要转换此代码即可与Web Form项目兼容。