CredentialCache.GetCredential Méthode
Définition
Important
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Retourne une instance de NetworkCredential associée à un URI (Uniform Resource Identifie) ou hôte spécifié, ainsi qu’un type d’authentification.
Surcharges
GetCredential(Uri, String) |
Retourne l’instance de NetworkCredential associée à l’URI (Uniform Resource Identifier) et au type d’authentification spécifiés. |
GetCredential(String, Int32, String) |
Retourne l’instance de NetworkCredential associée à l’hôte, au port et au protocole d’authentification spécifiés. |
GetCredential(Uri, String)
- Source:
- CredentialCache.cs
- Source:
- CredentialCache.cs
- Source:
- CredentialCache.cs
Retourne l’instance de NetworkCredential associée à l’URI (Uniform Resource Identifier) et au type d’authentification spécifiés.
public:
virtual System::Net::NetworkCredential ^ GetCredential(Uri ^ uriPrefix, System::String ^ authType);
public System.Net.NetworkCredential GetCredential (Uri uriPrefix, string authType);
public System.Net.NetworkCredential? GetCredential (Uri uriPrefix, string authType);
abstract member GetCredential : Uri * string -> System.Net.NetworkCredential
override this.GetCredential : Uri * string -> System.Net.NetworkCredential
Public Function GetCredential (uriPrefix As Uri, authType As String) As NetworkCredential
Paramètres
- uriPrefix
- Uri
Uri qui spécifie le préfixe URI des ressources auxquelles les informations d’identification autorisent l’accès.
- authType
- String
Schéma d'authentification utilisé par la ressource nommée dans uriPrefix
.
Retours
NetworkCredential ou, s’il n’existe aucune information d’identification correspondante dans le cache, null
.
Implémente
Exceptions
uriPrefix
ou authType
est null
.
Exemples
L’exemple de code suivant utilise la GetCredential(Uri, String) méthode pour retourner l’instance NetworkCredential associée à l’URI et au type d’authentification spécifiés.
void Display( NetworkCredential^ credential )
{
Console::WriteLine( "\nThe credentials are:" );
Console::WriteLine( "\nUsername : {0} , Password : {1} , Domain : {2}", credential->UserName, credential->Password, credential->Domain );
}
void GetPage( String^ url, String^ userName, String^ password, String^ domainName )
{
try
{
CredentialCache^ myCredentialCache = gcnew CredentialCache;
// Dummy names used as credentials.
myCredentialCache->Add( gcnew Uri( "http://microsoft.com/" ), "Basic", gcnew NetworkCredential( "user1","passwd1","domain1" ) );
myCredentialCache->Add( gcnew Uri( "http://msdn.com/" ), "Basic", gcnew NetworkCredential( "user2","passwd2","domain2" ) );
myCredentialCache->Add( gcnew Uri( url ), "Basic", gcnew NetworkCredential( userName,password,domainName ) );
// Create a webrequest with the specified url.
WebRequest^ myWebRequest = WebRequest::Create( url );
// Call 'GetCredential' to obtain the credentials specific to our Uri.
NetworkCredential^ myCredential = myCredentialCache->GetCredential( gcnew Uri( url ), "Basic" );
Display( myCredential );
// Associating only our credentials.
myWebRequest->Credentials = myCredential;
// Sends the request and waits for response.
WebResponse^ myWebResponse = myWebRequest->GetResponse();
// Process response here.
Console::WriteLine( "\nResponse Received." );
myWebResponse->Close();
}
catch ( WebException^ e )
{
if ( e->Response != nullptr )
Console::WriteLine( "\r\nFailed to obtain a response. The following error occurred : {0}", (dynamic_cast<HttpWebResponse^>(e->Response))->StatusDescription );
else
Console::WriteLine( "\r\nFailed to obtain a response. The following error occurred : {0}", e->Status );
}
catch ( Exception^ e )
{
Console::WriteLine( "\nThe following exception was raised : {0}", e->Message );
}
}
public static void GetPage(string url,string userName,string password,string domainName)
{
try
{
CredentialCache myCredentialCache = new CredentialCache();
// Dummy names used as credentials.
myCredentialCache.Add(new Uri("http://microsoft.com/"),"Basic", new NetworkCredential("user1","passwd1","domain1"));
myCredentialCache.Add(new Uri("http://msdn.com/"),"Basic", new NetworkCredential("user2","passwd2","domain2"));
myCredentialCache.Add(new Uri(url),"Basic", new NetworkCredential(userName,password,domainName));
// Create a webrequest with the specified url.
WebRequest myWebRequest = WebRequest.Create(url);
// Call 'GetCredential' to obtain the credentials specific to our Uri.
NetworkCredential myCredential = myCredentialCache.GetCredential(new Uri(url),"Basic");
Display(myCredential);
// Associating only our credentials.
myWebRequest.Credentials = myCredential;
// Sends the request and waits for response.
WebResponse myWebResponse = myWebRequest.GetResponse();
// Process response here.
Console.WriteLine("\nResponse Received.");
myWebResponse.Close();
}
catch(WebException e)
{
if (e.Response != null)
Console.WriteLine("\r\nFailed to obtain a response. The following error occurred : {0}",((HttpWebResponse)(e.Response)).StatusDescription);
else
Console.WriteLine("\r\nFailed to obtain a response. The following error occurred : {0}",e.Status);
}
catch(Exception e)
{
Console.WriteLine("\nThe following exception was raised : {0}",e.Message);
}
}
public static void Display(NetworkCredential credential)
{
Console.WriteLine("\nThe credentials are:");
Console.WriteLine("\nUsername : {0} ,Password : {1} ,Domain : {2}",credential.UserName,credential.Password,credential.Domain);
}
Public Shared Sub GetPage(url As String, userName As String, password As String, domainName As String)
Try
Dim myCredentialCache As New CredentialCache()
' Dummy names used as credentials
myCredentialCache.Add(New Uri("http://microsoft.com/"), "Basic", New NetworkCredential("user1", "passwd1", "domain1"))
myCredentialCache.Add(New Uri("http://msdn.com/"), "Basic", New NetworkCredential("user2", "passwd2", "domain2"))
myCredentialCache.Add(New Uri(url), "Basic", New NetworkCredential(userName, password, domainName))
' Creates a webrequest with the specified url.
Dim myWebRequest As WebRequest = WebRequest.Create(url)
' Call 'GetCredential' to obtain the credentials specific to our Uri.
Dim myCredential As NetworkCredential = myCredentialCache.GetCredential(New Uri(url), "Basic")
Display(myCredential)
myWebRequest.Credentials = myCredential 'Associating only our credentials
' Sends the request and waits for response.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()
' Process response here.
Console.WriteLine(ControlChars.Cr + "Response Received.")
myWebResponse.Close()
Catch e As WebException
If Not (e.Response Is Nothing) Then
Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "Failed to obtain a response. The following error occurred : {0}", CType(e.Response, HttpWebResponse).StatusDescription)
Else
Console.WriteLine(ControlChars.Lf + ControlChars.Cr + "Failed to obtain a response. The following error occurred : {0}", e.Status)
End If
Catch e As Exception
Console.WriteLine(ControlChars.Cr + "The following exception was raised : {0}", e.Message)
End Try
End Sub
Public Shared Sub Display(ByVal credential As NetworkCredential)
Console.WriteLine("The credentials are: ")
Console.WriteLine(ControlChars.Cr + "Username : {0} ,Password : {1} ,Domain : {2}", credential.UserName, credential.Password, credential.Domain)
End Sub
Remarques
La GetCredential(Uri, String) méthode recherche le CredentialCache et retourne l’instance NetworkCredential pour l’URI et le type d’autorisation spécifiés. Si le CredentialCache ne contient aucune instance correspondante NetworkCredential , null
est retourné.
GetCredential utilise le préfixe d’URI correspondant le plus long dans le cache pour déterminer l’ensemble d’informations d’identification à retourner pour un type d’autorisation. Le tableau suivant contient des exemples.
Préfixe d’URI | Correspond à |
---|---|
http://www.contoso.com/portal/news.htm |
Demandes pour la page news.htm web spécifique . |
http://www.contoso.com/portal/ |
Demande tout le contenu du chemin d’accès, à l’exception portal de la page news.htm . |
http://www.contoso.com/ |
Demandes pour toutes les ressources sur , à www.contoso.com l’exception de celles dans le chemin d’accès portal . |
S’applique à
GetCredential(String, Int32, String)
- Source:
- CredentialCache.cs
- Source:
- CredentialCache.cs
- Source:
- CredentialCache.cs
Retourne l’instance de NetworkCredential associée à l’hôte, au port et au protocole d’authentification spécifiés.
public:
virtual System::Net::NetworkCredential ^ GetCredential(System::String ^ host, int port, System::String ^ authenticationType);
public System.Net.NetworkCredential GetCredential (string host, int port, string authenticationType);
public System.Net.NetworkCredential? GetCredential (string host, int port, string authenticationType);
abstract member GetCredential : string * int * string -> System.Net.NetworkCredential
override this.GetCredential : string * int * string -> System.Net.NetworkCredential
Public Function GetCredential (host As String, port As Integer, authenticationType As String) As NetworkCredential
Paramètres
- authenticationType
- String
String qui identifie le schéma d'authentification utilisé lors de la connexion à host
.
Retours
NetworkCredential ou, s’il n’existe aucune information d’identification correspondante dans le cache, null
.
Implémente
Exceptions
port
est inférieur à zéro.
Remarques
Cette méthode recherche et CredentialCache retourne l’instance NetworkCredential pour l’hôte, le port et le type d’autorisation spécifiés. Les host
valeurs , port
et authType
passées à cette méthode ne respectent pas la casse par rapport aux valeurs spécifiées lorsque les informations d’identification ont été ajoutées à l’utilisation CredentialCache des Add méthodes.
Les valeurs prises en charge pour authType
sont « NTLM », « Digest », « Kerberos » et « Negotiate ».