SharePoint solution集成Autofac.

刚做完一个SharePoint solution，想在里边用依赖注入，一直没找到方法，就用微软的依赖注入框架采用locator的模式去解析服务。

今天又想到了这个事，又是查找资料，想想AI时代，问了问ChatGPT,自己抱着试一试的心态，发现还真可以用。

直接用Autofac就行了。

写了个测试代码，先定义一个服务接口。

  [ServiceContract]
  public interface IAutofacTest
  {
      [OperationContract, WebInvoke(Method = "GET", UriTemplate = "TestGet",
      BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
      OutputTest TestGet();
  }
  public class OutputTest
  {
      public string Name { get; set; }
  }

 

在写个简单的实现。

[ServiceBehavior(IncludeExceptionDetailInFaults = true)]
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
public class AutofacTest : IAutofacTest
{
    public AutofacTest()
    {

    }
    private readonly IMyService _myservice;
    public AutofacTest(IMyService myservice)
    {
        _myservice = myservice;
    }
    public OutputTest TestGet()
    {
        return new OutputTest()
        {
            Name = _myservice == null ? "abc":  _myservice.Do()
        };
    }
}

自定义一个factory。

  public class CustomMultipleBaseAddressAutofacFactory: MultipleBaseAddressWebServiceHostFactory
  {
      protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
      {
          if (IoCContainer.GetContainer() == null)
              {
                  IoCContainer.Initialize();
              }
              var host = new CustomMultipleBaseServiceHost(serviceType, baseAddresses);
              host.AddDependencyInjectionBehavior<IAutofacTest>(IoCContainer.GetContainer());
              return host;
      }
  }

IOC container:

 public static class IoCContainer
 {
     private static IContainer _container;

     public static void Initialize()
     {
         var builder = new ContainerBuilder();

         builder.RegisterType<AutofacTest>().As<IAutofacTest>().InstancePerLifetimeScope();
         builder.RegisterType<MyService>().As<IMyService>().InstancePerLifetimeScope();


         _container = builder.Build();
     }

     public static T Resolve<T>()
     {
         return _container.Resolve<T>();
     }

     public static IContainer GetContainer()
     {
         return _container;
     }
 }

加入factory。

<%@ ServiceHost Language="C#" Debug="true"
    Service="Solution.ISAPI.AutofacTest,$SharePoint.Project.AssemblyFullName$"
    CodeBehind="AutofacTest.svc.cs"
    Factory="Solution.CustomMultipleBaseAddressAutofacFactory,
    $SharePoint.Project.AssemblyFullName$"

deploy 一下。

请求SharePoint wcf地址 site/_vti_bin/xx/AutofacTest.svc/TestGet

正常返回:

{
  "TestGetResult": {
    "Name": "hello"
  }
}