Instrukcje: Określanie wiązania klienta w kodzie
W tym przykładzie klient jest tworzony w celu korzystania z usługi kalkulatora, a powiązanie dla tego klienta jest określane imperatywnie w kodzie. Klient uzyskuje dostęp do CalculatorService
obiektu , który implementuje ICalculator
interfejs, a zarówno usługa, jak i klient używają BasicHttpBinding klasy .
W tej procedurze przyjęto założenie, że usługa kalkulatora jest uruchomiona. Aby uzyskać informacje na temat tworzenia usługi, zobacz How to: Specify a Service Binding in Configuration (Instrukcje: określanie powiązania usługi w konfiguracji). Używa również narzędzia ServiceModel Metadata Tool (Svcutil.exe)Windows Communication Foundation (WCF) zapewnia automatyczne generowanie składników klienta. Narzędzie generuje kod klienta na potrzeby uzyskiwania dostępu do usługi.
Klient jest wbudowany w dwie części. Svcutil.exe generuje ClientCalculator
element implementujący ICalculator
interfejs. Ta aplikacja kliencka jest następnie tworzona przez utworzenie wystąpienia ClientCalculator
, a następnie określenie powiązania i adresu usługi w kodzie.
Aby uzyskać kopię źródłową tego przykładu, zobacz przykład BasicBinding .
Aby określić powiązanie niestandardowe w kodzie
Użyj Svcutil.exe z wiersza polecenia, aby wygenerować kod na podstawie metadanych usługi.
Svcutil.exe <service's Metadata Exchange (MEX) address or HTTP GET address>
Wygenerowany klient zawiera
ICalculator
interfejs definiujący kontrakt usługi, który musi spełniać implementacja klienta.[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
Wygenerowany klient zawiera również implementację .
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
Utwórz wystąpienie klasy korzystającej
ClientCalculator
BasicHttpBinding z klasy w aplikacji klienckiej, a następnie wywołaj operacje usługi pod określonym adresem.//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
Skompiluj i uruchom klienta.