SoapExtension SoapExtension SoapExtension SoapExtension Class

Definizione

Classe base per le estensioni SOAP relative ai servizi Web XML creati utilizzando ASP.NET.The base class for SOAP extensions for XML Web services created using ASP.NET.

public ref class SoapExtension abstract
public abstract class SoapExtension
type SoapExtension = class
Public MustInherit Class SoapExtension
Ereditarietà
SoapExtensionSoapExtensionSoapExtensionSoapExtension

Esempi

Nell'esempio TraceExtension l'estensione SOAP invia la richiesta e risposta SOAP in un file specificato quando viene applicato a un metodo di servizio Web XML.The following TraceExtension SOAP extension outputs the SOAP request and SOAP response to a specified file when applied to an XML Web service method. Se l'estensione SOAP seguente viene installata per l'esecuzione con un servizio Web XML, l'account utente ASPNET deve disporre delle autorizzazioni di scrittura nella directory in cui è scritto il file di log.If the following SOAP extension is installed to run with an XML Web service, the ASPNET user account must have permission to write to the directory in which the log file is written.

#using <System.dll>
#using <System.Web.Services.dll>

using namespace System;
using namespace System::Web::Services;
using namespace System::Web::Services::Protocols;
using namespace System::IO;
using namespace System::Net;

ref class TraceExtension;

// Create a SoapExtensionAttribute for the SOAP Extension that can be
// applied to an XML Web service method.
[AttributeUsage(AttributeTargets::Method)]
public ref class TraceExtensionAttribute: public SoapExtensionAttribute
{
private:
   String^ filename;
   int priority;

public:
   TraceExtensionAttribute()
      : filename( "c:\\log.txt" )
   {}

   property Type^ ExtensionType 
   {
      virtual Type^ get() override
      {
         return TraceExtension::typeid;
      }
   }

   property int Priority 
   {
      virtual int get() override
      {
         return priority;
      }
      virtual void set( int value ) override
      {
         priority = value;
      }
   }

   property String^ Filename 
   {
      String^ get()
      {
         return filename;
      }
      void set( String^ value )
      {
         filename = value;
      }
   }
};

// Define a SOAP Extension that traces the SOAP request and SOAP
// response for the XML Web service method the SOAP extension is
// applied to.
public ref class TraceExtension: public SoapExtension
{
private:
   Stream^ oldStream;
   Stream^ newStream;
   String^ filename;

public:
   // Save the Stream representing the SOAP request or SOAP response into
   // a local memory buffer.
   virtual Stream^ ChainStream( Stream^ stream ) override
   {
      oldStream = stream;
      newStream = gcnew MemoryStream;
      return newStream;
   }

   // When the SOAP extension is accessed for the first time, the XML Web
   // service method it is applied to is accessed to store the file
   // name passed in, using the corresponding SoapExtensionAttribute. 
   virtual Object^ GetInitializer( LogicalMethodInfo^ /*methodInfo*/, SoapExtensionAttribute^ attribute ) override
   {
      return (dynamic_cast<TraceExtensionAttribute^>(attribute))->Filename;
   }

   // The SOAP extension was configured to run using a configuration file
   // instead of an attribute applied to a specific XML Web service
   // method.
   virtual Object^ GetInitializer( Type^ WebServiceType ) override
   {
      // Return a file name to log the trace information to, based on the
      // type.
      return String::Format( "C:\\{0}.log", WebServiceType->FullName );
   }

   // Receive the file name stored by GetInitializer and store it in a
   // member variable for this specific instance.
   virtual void Initialize( Object^ initializer ) override
   {
      filename = dynamic_cast<String^>(initializer);
   }

   //  If the SoapMessageStage is such that the SoapRequest or
   //  SoapResponse is still in the SOAP format to be sent or received,
   //  save it out to a file.
   virtual void ProcessMessage( SoapMessage^ message ) override
   {
      switch ( message->Stage )
      {
         case SoapMessageStage::BeforeSerialize:
            break;
         case SoapMessageStage::AfterSerialize:
            WriteOutput( message );
            break;
         case SoapMessageStage::BeforeDeserialize:
            WriteInput( message );
            break;
         case SoapMessageStage::AfterDeserialize:
            break;
      }
   }

   void WriteOutput( SoapMessage^ message )
   {
      newStream->Position = 0;
      FileStream^ fs = gcnew FileStream( filename, FileMode::Append,
         FileAccess::Write );
      StreamWriter^ w = gcnew StreamWriter( fs );

      String^ soapString = ( (SoapServerMessage^)( message ) ) ?
         (String^)"SoapResponse" : "SoapRequest";
      w->WriteLine( "-----{0} at {1}", soapString, DateTime::Now );
      w->Flush();
      Copy( newStream, fs );
      w->Close();
      newStream->Position = 0;
      Copy( newStream, oldStream );
   }

   void WriteInput( SoapMessage^ message )
   {
      Copy( oldStream, newStream );
      FileStream^ fs = gcnew FileStream( filename,FileMode::Append,FileAccess::Write );
      StreamWriter^ w = gcnew StreamWriter( fs );
      String^ soapString = (dynamic_cast<SoapServerMessage^>(message)) ? (String^)"SoapRequest" : "SoapResponse";
      w->WriteLine( "-----{0} at {1}", soapString, DateTime::Now );
      w->Flush();
      newStream->Position = 0;
      Copy( newStream, fs );
      w->Close();
      newStream->Position = 0;
   }

   void Copy( Stream^ from, Stream^ to )
   {
      TextReader^ reader = gcnew StreamReader( from );
      TextWriter^ writer = gcnew StreamWriter( to );
      writer->WriteLine( reader->ReadToEnd() );
      writer->Flush();
   }
};
using System;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.IO;
using System.Net;

	// Define a SOAP Extension that traces the SOAP request and SOAP
	// response for the XML Web service method the SOAP extension is
	// applied to.

	public class TraceExtension : SoapExtension 
	{
		Stream oldStream;
		Stream newStream;
		string filename;

		// Save the Stream representing the SOAP request or SOAP response into
		// a local memory buffer.
		public override Stream ChainStream( Stream stream )
		{
			oldStream = stream;
			newStream = new MemoryStream();
			return newStream;
		}

		// When the SOAP extension is accessed for the first time, the XML Web
		// service method it is applied to is accessed to store the file
		// name passed in, using the corresponding SoapExtensionAttribute.	
		public override object GetInitializer(LogicalMethodInfo methodInfo, SoapExtensionAttribute attribute) 
		{
			return ((TraceExtensionAttribute) attribute).Filename;
		}

		// The SOAP extension was configured to run using a configuration file
		// instead of an attribute applied to a specific XML Web service
		// method.
		public override object GetInitializer(Type WebServiceType) 
		{
			// Return a file name to log the trace information to, based on the
			// type.
			return "C:\\" + WebServiceType.FullName + ".log";    
		}

		// Receive the file name stored by GetInitializer and store it in a
		// member variable for this specific instance.
		public override void Initialize(object initializer) 
		{
			filename = (string) initializer;
		}

		//  If the SoapMessageStage is such that the SoapRequest or
		//  SoapResponse is still in the SOAP format to be sent or received,
		//  save it out to a file.
		public override void ProcessMessage(SoapMessage message) 
		{
			switch (message.Stage) 
			{
				case SoapMessageStage.BeforeSerialize:
					break;
				case SoapMessageStage.AfterSerialize:
					WriteOutput(message);
					break;
				case SoapMessageStage.BeforeDeserialize:
					WriteInput(message);
					break;
				case SoapMessageStage.AfterDeserialize:
					break;
			}
		}

		public void WriteOutput(SoapMessage message)
		{
			newStream.Position = 0;
			FileStream fs = new FileStream(filename, FileMode.Append,
				FileAccess.Write);
			StreamWriter w = new StreamWriter(fs);

			string soapString = (message is SoapServerMessage) ? "SoapResponse" : "SoapRequest";
			w.WriteLine("-----" + soapString + " at " + DateTime.Now);
			w.Flush();
			Copy(newStream, fs);
			w.Close();
			newStream.Position = 0;
			Copy(newStream, oldStream);
		}

		public void WriteInput(SoapMessage message)
		{
			Copy(oldStream, newStream);
			FileStream fs = new FileStream(filename, FileMode.Append,
				FileAccess.Write);
			StreamWriter w = new StreamWriter(fs);

			string soapString = (message is SoapServerMessage) ?
				"SoapRequest" : "SoapResponse";
			w.WriteLine("-----" + soapString + 
				" at " + DateTime.Now);
			w.Flush();
			newStream.Position = 0;
			Copy(newStream, fs);
			w.Close();
			newStream.Position = 0;
		}

		void Copy(Stream from, Stream to) 
		{
			TextReader reader = new StreamReader(from);
			TextWriter writer = new StreamWriter(to);
			writer.WriteLine(reader.ReadToEnd());
			writer.Flush();
		}
	}

	// Create a SoapExtensionAttribute for the SOAP Extension that can be
	// applied to an XML Web service method.
	[AttributeUsage(AttributeTargets.Method)]
	public class TraceExtensionAttribute : SoapExtensionAttribute 
	{

		private string filename = "c:\\log.txt";
		private int priority;

		public override Type ExtensionType 
		{
			get { return typeof(TraceExtension); }
		}

		public override int Priority 
		{
			get { return priority; }
			set { priority = value; }
		}

		public string Filename 
		{
			get 
			{
				return filename;
			}
			set 
			{
				filename = value;
			}
		}
	}
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.IO

' Define a SOAP Extension that traces the SOAP request and SOAP response
' for the XML Web service method the SOAP extension is applied to.
Public Class TraceExtension
    Inherits SoapExtension

    Private oldStream As Stream
    Private newStream As Stream
    Private m_filename As String

    ' Save the Stream representing the SOAP request or SOAP response into
    ' a local memory buffer.
    Public Overrides Function ChainStream(ByVal stream As Stream) As Stream
        oldStream = stream
        newStream = New MemoryStream()
        Return newStream
    End Function

    ' When the SOAP extension is accessed for the first time, the XML Web
    ' service method it is applied to is accessed to store the file
    ' name passed in, using the corresponding SoapExtensionAttribute.    
    Public Overloads Overrides Function GetInitializer(ByVal methodInfo As _
        LogicalMethodInfo, _
    ByVal attribute As SoapExtensionAttribute) As Object
        Return CType(attribute, TraceExtensionAttribute).Filename
    End Function

    ' The SOAP extension was configured to run using a configuration file
    ' instead of an attribute applied to a specific XML Web service
    ' method.  Return a file name based on the class implementing the Web
    ' Service's type.
    Public Overloads Overrides Function GetInitializer(ByVal WebServiceType As _
      Type) As Object
        ' Return a file name to log the trace information to, based on the
        ' type.
        Return "C:\" + WebServiceType.FullName + ".log"
    End Function

    ' Receive the file name stored by GetInitializer and store it in a
    ' member variable for this specific instance.
    Public Overrides Sub Initialize(ByVal initializer As Object)
        m_filename = CStr(initializer)
    End Sub

    ' If the SoapMessageStage is such that the SoapRequest or SoapResponse
    ' is still in the SOAP format to be sent or received over the network,
    ' save it out to file.
    Public Overrides Sub ProcessMessage(ByVal message As SoapMessage)
        Select Case message.Stage
            Case SoapMessageStage.BeforeSerialize
            Case SoapMessageStage.AfterSerialize
                WriteOutput(message)
            Case SoapMessageStage.BeforeDeserialize
                WriteInput(message)
            Case SoapMessageStage.AfterDeserialize
        End Select
    End Sub

    ' Write the SOAP message out to a file.
    Public Sub WriteOutput(ByVal message As SoapMessage)
        newStream.Position = 0
        Dim fs As New FileStream(m_filename, FileMode.Append, _
                                 FileAccess.Write)
        Dim w As New StreamWriter(fs)
        w.WriteLine("-----Response at " + DateTime.Now.ToString())
        w.Flush()
        Copy(newStream, fs)
        w.Close()
        newStream.Position = 0
        Copy(newStream, oldStream)
    End Sub

    ' Write the SOAP message out to a file.
    Public Sub WriteInput(ByVal message As SoapMessage)
        Copy(oldStream, newStream)
        Dim fs As New FileStream(m_filename, FileMode.Append, _
                                 FileAccess.Write)
        Dim w As New StreamWriter(fs)

        w.WriteLine("----- Request at " + DateTime.Now.ToString())
        w.Flush()
        newStream.Position = 0
        Copy(newStream, fs)
        w.Close()
        newStream.Position = 0
    End Sub

    Sub Copy(ByVal fromStream As Stream, ByVal toStream As Stream)
        Dim reader As New StreamReader(fromStream)
        Dim writer As New StreamWriter(toStream)
        writer.WriteLine(reader.ReadToEnd())
        writer.Flush()
    End Sub
End Class

' Create a SoapExtensionAttribute for our SOAP Extension that can be
' applied to an XML Web service method.
<AttributeUsage(AttributeTargets.Method)> _
Public Class TraceExtensionAttribute
    Inherits SoapExtensionAttribute

    Private m_filename As String = "c:\log.txt"
    Private m_priority As Integer

    Public Overrides ReadOnly Property ExtensionType() As Type
        Get
            Return GetType(TraceExtension)
        End Get
    End Property

    Public Overrides Property Priority() As Integer
        Get
            Return m_priority
        End Get
        Set(ByVal Value As Integer)
            m_priority = value
        End Set
    End Property

    Public Property Filename() As String
        Get
            Return m_filename
        End Get
        Set(ByVal Value As String)
            m_filename = value
        End Set
    End Property
End Class

Commenti

ASP.NET offre un'infrastruttura basate su SOAP da compilare tramite un meccanismo di estensibilità.ASP.NET allows a SOAP-related infrastructure to be built by means of an extensibility mechanism. L'architettura dell'estensione SOAP di ASP.NET si basa su un'estensione che può controllare o modificare un messaggio in specifiche fasi nel client o il server di elaborazione dei messaggi.The ASP.NET SOAP extension architecture revolves around an extension that can inspect or modify a message at specific stages in message processing on either the client or the server.

Le estensioni ASP.NET SOAP derivano dal SoapExtension classe.ASP.NET SOAP extensions derive from the SoapExtension class. Il GetInitializer e Initialize metodi forniscono meccanismi alternativi per inizializzare l'estensione SOAP per migliorare le prestazioni.The GetInitializer and Initialize methods provide alternative mechanisms for initializing the SOAP extension to enhance performance. ProcessMessage è il fulcro della maggior parte delle estensioni SOAP, come il metodo viene chiamato in ogni fase definita nel SoapMessageStage, consentendo l'estensione SOAP per eseguire il comportamento desiderato dell'estensione SOAP specifiche.ProcessMessage is the heart of most SOAP extensions, as the method is called at each stage defined in SoapMessageStage, allowing the SOAP extension to perform the desired behavior of that specific SOAP extension. Per le estensioni SOAP che è necessario modificano la richiesta o risposta SOAP, ChainStream offre l'opportunità di ricevere i dati proposti da inviare in rete.For SOAP extensions that need to modify the SOAP request or SOAP response, ChainStream provides an opportunity to receive the proposed data to be sent across the wire.

Costruttori

SoapExtension() SoapExtension() SoapExtension() SoapExtension()

Inizializza una nuova istanza della classe SoapExtension.Initializes a new instance of the SoapExtension class.

Metodi

ChainStream(Stream) ChainStream(Stream) ChainStream(Stream) ChainStream(Stream)

Quando se ne esegue l'override in una classe derivata, consente a un'estensione SOAP di accedere al buffer di memoria contenente la richiesta o la risposta SOAP.When overridden in a derived class, allows a SOAP extension access to the memory buffer containing the SOAP request or response.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Funge da funzione hash predefinita.Serves as the default hash function.

(Inherited from Object)
GetInitializer(LogicalMethodInfo, SoapExtensionAttribute) GetInitializer(LogicalMethodInfo, SoapExtensionAttribute) GetInitializer(LogicalMethodInfo, SoapExtensionAttribute) GetInitializer(LogicalMethodInfo, SoapExtensionAttribute)

Quando se ne esegue l'override in una classe derivata, consente a un'estensione SOAP di inizializzare i dati specifici di un servizio Web XML utilizzando un attributo applicato al metodo di servizio Web XML, incidendo una sola volta sulle prestazioni.When overridden in a derived class, allows a SOAP extension to initialize data specific to an XML Web service method using an attribute applied to the XML Web service method at a one time performance cost.

GetInitializer(Type) GetInitializer(Type) GetInitializer(Type) GetInitializer(Type)

Quando se ne esegue l'override in una classe derivata, consente a un'estensione SOAP di inizializzare i dati specifici di una classe implementando un servizio Web XML, incidendo una sola volta sulle prestazioni.When overridden in a derived class, allows a SOAP extension to initialize data specific to a class implementing an XML Web service at a one time performance cost.

GetType() GetType() GetType() GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Inherited from Object)
Initialize(Object) Initialize(Object) Initialize(Object) Initialize(Object)

Quando se ne esegue l'override in una classe derivata, consente a un'estensione SOAP di essere inizializzata utilizzando i dati memorizzati nella cache nel metodo GetInitializer(LogicalMethodInfo, SoapExtensionAttribute).When overridden in a derived class, allows a SOAP extension to initialize itself using the data cached in the GetInitializer(LogicalMethodInfo, SoapExtensionAttribute) method.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Inherited from Object)
ProcessMessage(SoapMessage) ProcessMessage(SoapMessage) ProcessMessage(SoapMessage) ProcessMessage(SoapMessage)

Quando se ne esegue l'override in una classe derivata, consente a un'estensione SOAP di ricevere un oggetto SoapMessage da elaborare in ciascun oggetto SoapMessageStage.When overridden in a derived class, allows a SOAP extension to receive a SoapMessage to process at each SoapMessageStage.

ToString() ToString() ToString() ToString()

Restituisce una stringa che rappresenta l'oggetto corrente.Returns a string that represents the current object.

(Inherited from Object)

Si applica a

Vedi anche