在C#中，是否可以創建一個通用方法來實體化從PraxedoWSDL生成的多個“管理器客戶端”？

我們將 Praxedo 用于多種服務，其中許多服務在不同的 SOAP API 上，這些 API 與實體化和消費非常相似。

我不想重復代碼，而是想用一種通用的方法來做到這一點。

我創建了這個工廠類：

using PraxedoIntegration.Common.Configurations;
using System;
using System.ServiceModel;
using System.ServiceModel.Channels;
using WcfCoreMtomEncoder;

namespace PraxedoV6.ManagerClientWrappers.Helpers
{
    public class PraxedoClientFactory
    {
        private readonly PraxedoSettings _praxedoSettings;

        public PraxedoClientFactory(
                PraxedoSettings praxedoSettings
            ) =>
            _praxedoSettings = praxedoSettings ?? throw new ArgumentNullException(nameof(praxedoSettings));

        public T Create<T, TChannel>(Uri endpoint, HttpsTransportBindingElement bindingElement)
            where T : ClientBase<TChannel>, new()
            where TChannel : class
        {
            MtomMessageEncoderBindingElement encoding = CreateMtomMessageEncoderBindingElement();
            CustomBinding customBinding = new(encoding, bindingElement);

            T managerClient = (T)Activator.CreateInstance(typeof(T), new object[] { customBinding, endpoint });

            _praxedoSettings.AddAuthorizationTo(managerClient);
            return Authorize<T, TChannel>(managerClient);
        }

        private static MtomMessageEncoderBindingElement CreateMtomMessageEncoderBindingElement() =>
            new(new TextMessageEncodingBindingElement
            {
                MessageVersion = MessageVersion.CreateVersion(EnvelopeVersion.Soap12, AddressingVersion.None)
            });

        public T Authorize<T, TChannel>(T managerClient)
            where T : ClientBase<TChannel>, new()
            where TChannel : class
        {
            _ = new OperationContextScope(managerClient.InnerChannel);
            OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name]
                = _praxedoSettings.ToHttpRequestMessageProperty();
            return managerClient;
        }
    }
}

它編譯得很好。

但是當我嘗試使用它時，例如：

            _customerManagerClient = praxedoClientFactory.Create<CustomerManagerClient, CustomerManagerV6.CustomerManager>(
                    _praxedoSettings.CustomerManagerEndpoint,
                    new HttpsTransportBindingElement()

我收到運行時錯誤，例如：

?

WorkflowTests.TaskProcessor.NewOrg.CreateCustomerAndLocationActionDiagnosticTool.CreateCustomerAndLocationInPraxedoTest 來源：CreateCustomerAndLocationActionDiagnosticTool.cs line 15
持續時間：23 ms

訊息：System.MissingMethodException：未找到型別“CustomerManagerV6.CustomerManagerClient”的建構式。

Stack Trace: RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture) Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) Activator.CreateInstance(Type type, Object[] args) PraxedoClientFactory.Create[T,TChannel](Uri endpoint, HttpsTransportBindingElement bindingElement) line 25 CustomerManagerClientWrapper.ctor(PraxedoClientFactory praxedoClientFactory, PraxedoSettings praxedoSettings, PraxedoThrottleOut praxedoThrottleOut) line 30 CreateCustomerAndLocationActionDiagnosticTool.CreateCustomerAndLocationInPraxedoTest() line 22 --- End of stack trace from previous location ---

在這個實體中CustomerManagerClient是一個從抽象繼承System.ServiceModel.ClientBase<CustomerManagerV6.CustomerManager>并實作介面的類CustomerManagerV6.CustomerManager（所有這些都是從 WSDL 自動生成的每個代碼）。

在另一個實體中，我們擁有BusinessEventManagerClient（您可能會預測）從抽象繼承System.ServiceModel.ClientBase<BusinessEventManagerV6.BusinessEventManagerClient>并實作介面BusinessEventManagerV6.BusinessEventManagerClient（所有 [再次] 根據從 WSDL 自動生成的代碼）。

我們還有大約六個類似的“經理客戶”。

我是否Create()使用正確的型別引數和約束宣告方法？我是否正確呼叫它？還有什么我應該做的嗎？我是在嘗試做一些不可能的事情嗎？

uj5u.com熱心網友回復：

找出問題....我忘記將 my 轉換Uri endpoint為 an EndpointAddress，如下所示：

        public T Create<T, TChannel>(Uri endpoint, HttpsTransportBindingElement bindingElement)
            where T : ClientBase<TChannel>, TChannel, new()
            where TChannel : class
        {
            MtomMessageEncoderBindingElement encoding = CreateMtomMessageEncoderBindingElement();
            CustomBinding customBinding = new(encoding, bindingElement);
            EndpointAddress endpointAddress = new(endpoint);

            T managerClient = (T)Activator.CreateInstance(typeof(T), new object[] { customBinding, endpointAddress });

            _praxedoSettings.AddAuthorizationTo(managerClient);
            return Authorize<T, TChannel>(managerClient);
        }

...所以建構式得到了錯誤型別的物件。

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