Vorgehensweise: Angeben einer Clientbindung im Code
In diesem Beispiel wird ein Client erstellt, um einen Rechnerdienst zu nutzen, und die Bindung des Clients wird imperativ im Code angegeben. Der Client greift auf den CalculatorService
zu, der die ICalculator
-Schnittstelle implementiert, und sowohl der Dienst als auch der Client verwenden die Klasse BasicHttpBinding.
In dieser Prozedur wird davon ausgegangen, dass der Rechnerdienst ausgeführt wird. Informationen zum Erstellen des Diensts finden Sie unter Gewusst wie : Festlegen einer Dienstbindung in der Konfiguration. Außerdem wird das ServiceModel Metadata Utility Tool (Svcutil.exe) von Windows Communication Foundation (WCF) verwendet, um die Clientkomponenten automatisch zu generieren. Das Tool generiert den Clientcode für den Zugriff auf den Dienst.
Der Client wird in zwei Schritten erstellt. Svcutil.exe generiert den ClientCalculator
, der die ICalculator
-Schnittstelle implementiert. Anschließend wird die Clientanwendung erstellt, indem eine Instanz von ClientCalculator
erstellt wird und dann die Bindung und die Adresse für den Dienst im Code angegeben werden.
Die Quellkopie dieses Beispiels finden Sie im BasicBinding-Beispiel.
So geben Sie eine benutzerdefinierte Bindung im Code an
Verwenden Sie Svcutil.exe in der Befehlszeile, um Code von Dienstmetadaten zu generieren.
Svcutil.exe <service's Metadata Exchange (MEX) address or HTTP GET address>
Der generierte Client enthält die
ICalculator
-Schnittstelle, die den Dienstvertrag definiert, dem die Clientimplementierung entsprechen muss.[ServiceContract] public interface ICalculator { [OperationContract] double Add(double n1, double n2); [OperationContract] double Subtract(double n1, double n2); [OperationContract] double Multiply(double n1, double n2); [OperationContract] double Divide(double n1, double n2); }
<ServiceContract()> _ Public Interface ICalculator <OperationContract()> _ Function Add(ByVal n1 As Double, ByVal n2 As Double) As Double <OperationContract()> _ Function Subtract(ByVal n1 As Double, ByVal n2 As Double) As Double <OperationContract()> _ Function Multiply(ByVal n1 As Double, ByVal n2 As Double) As Double <OperationContract()> _ Function Divide(ByVal n1 As Double, ByVal n2 As Double) As Double End Interface
Der generierte Client enthält außerdem die Implementierung vom
ClientCalculator
.public class CalculatorClient : System.ServiceModel.ClientBase<Microsoft.ServiceModel.Samples.ICalculator>, Microsoft.ServiceModel.Samples.ICalculator { public CalculatorClient() { } public CalculatorClient(string endpointConfigurationName) : base(endpointConfigurationName) { } public CalculatorClient(string endpointConfigurationName, string remoteAddress) : base(endpointConfigurationName, remoteAddress) { } public CalculatorClient(string endpointConfigurationName, EndpointAddress remoteAddress) : base(endpointConfigurationName, remoteAddress) { } public CalculatorClient(Binding binding, EndpointAddress remoteAddress) : base(binding, remoteAddress) { } public double Add(double n1, double n2) { return base.Channel.Add(n1, n2); } public double Subtract(double n1, double n2) { return base.Channel.Subtract(n1, n2); } public double Multiply(double n1, double n2) { return base.Channel.Multiply(n1, n2); } public double Divide(double n1, double n2) { return base.Channel.Divide(n1, n2); } }
Public Class CalculatorClient Inherits System.ServiceModel.ClientBase(Of Microsoft.ServiceModel.Samples.ICalculator) Implements Microsoft.ServiceModel.Samples.ICalculator Public Sub New() End Sub Public Sub New(ByVal endpointConfigurationName As String) MyBase.New(endpointConfigurationName) End Sub Public Sub New(ByVal endpointConfigurationName As String, _ ByVal remoteAddress As String) MyBase.New(endpointConfigurationName, remoteAddress) End Sub Public Sub New(ByVal endpointConfigurationName As String, _ ByVal remoteAddress As EndpointAddress) MyBase.New(endpointConfigurationName, remoteAddress) End Sub Public Sub New(ByVal binding As Binding, _ ByVal remoteAddress As EndpointAddress) MyBase.New(binding, remoteAddress) End Sub Public Function Add(ByVal n1 As Double, _ ByVal n2 As Double) As Double Implements Microsoft.ServiceModel.Samples.ICalculator.Add Return MyBase.Channel.Add(n1, n2) End Function Public Function Subtract(ByVal n1 As Double, _ ByVal n2 As Double) As Double Implements Microsoft.ServiceModel.Samples.ICalculator.Subtract Return MyBase.Channel.Subtract(n1, n2) End Function Public Function Multiply(ByVal n1 As Double, _ ByVal n2 As Double) As Double Implements Microsoft.ServiceModel.Samples.ICalculator.Multiply Return MyBase.Channel.Multiply(n1, n2) End Function Public Function Divide(ByVal n1 As Double, _ ByVal n2 As Double) As Double Implements Microsoft.ServiceModel.Samples.ICalculator.Divide Return MyBase.Channel.Divide(n1, n2) End Function End Class
Erstellen Sie eine Instanz des
ClientCalculator
, der die BasicHttpBinding-Klasse in einer Clientanwendung verwendet, und rufen Sie anschließend die Dienstvorgänge an der angegebenen Adresse auf.//Client implementation code. class Client { static void Main() { //Specify the binding to be used for the client. BasicHttpBinding binding = new BasicHttpBinding(); //Specify the address to be used for the client. EndpointAddress address = new EndpointAddress("http://localhost/servicemodelsamples/service.svc"); // Create a client that is configured with this address and binding. CalculatorClient client = new CalculatorClient(binding, address); // Call the Add service operation. double value1 = 100.00D; double value2 = 15.99D; double result = client.Add(value1, value2); Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result); // Call the Subtract service operation. value1 = 145.00D; value2 = 76.54D; result = client.Subtract(value1, value2); Console.WriteLine("Subtract({0},{1}) = {2}", value1, value2, result); // Call the Multiply service operation. value1 = 9.00D; value2 = 81.25D; result = client.Multiply(value1, value2); Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result); // Call the Divide service operation. value1 = 22.00D; value2 = 7.00D; result = client.Divide(value1, value2); Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result); //Closing the client gracefully closes the connection and cleans up resources client.Close(); Console.WriteLine(); Console.WriteLine("Press <ENTER> to terminate client."); Console.ReadLine(); } } }
'Client implementation code. Friend Class Client Shared Sub Main() 'Specify the binding to be used for the client. Dim binding As New BasicHttpBinding() 'Specify the address to be used for the client. Dim address As New EndpointAddress("http://localhost/servicemodelsamples/service.svc") ' Create a client that is configured with this address and binding. Dim client As New CalculatorClient(binding, address) ' Call the Add service operation. Dim value1 = 100.0R Dim value2 = 15.99R Dim result = client.Add(value1, value2) Console.WriteLine("Add({0},{1}) = {2}", value1, value2, result) ' Call the Subtract service operation. value1 = 145.0R value2 = 76.54R result = client.Subtract(value1, value2) Console.WriteLine("Subtract({0},{1}) = {2}", value1, value2, result) ' Call the Multiply service operation. value1 = 9.0R value2 = 81.25R result = client.Multiply(value1, value2) Console.WriteLine("Multiply({0},{1}) = {2}", value1, value2, result) ' Call the Divide service operation. value1 = 22.0R value2 = 7.0R result = client.Divide(value1, value2) Console.WriteLine("Divide({0},{1}) = {2}", value1, value2, result) 'Closing the client gracefully closes the connection and cleans up resources client.Close() Console.WriteLine() Console.WriteLine("Press <ENTER> to terminate client.") Console.ReadLine() End Sub End Class End Namespace
Kompilieren Sie den Code, und führen Sie den Client aus.