asp.net-web-api – 使用SimpleInjector有没有办法用.net 4 / we

BAD依赖关系解析器实现是one listed here的副本：

public sealed class SimpleInjectorWebApiDependencyResolver : IDependencyResolver
{
  private readonly Container container;

  public SimpleInjectorWebApiDependencyResolver(Container container)
  {
    this.container = container;
  }

  public IDependencyScope BeginScope()
  {
    return this;
  }

  public object GetService(Type serviceType)
  {
    return ((IServiceProvider)this.container).GetService(serviceType);
  }

  public IEnumerable<object> GetServices(Type serviceType)
  {
    return this.container.GetAllInstances(serviceType);
 }

 public void Dispose()
 {
 }
}

我注意到我在here下载的源代码中有一些不同的副本.

public sealed class SimpleInjectorWebApiDependencyResolver : IDependencyResolver
{
    private readonly Container container;
    private readonly Scope scope;

    public SimpleInjectorWebApiDependencyResolver(Container container) : this(container,beginScope: false)
    {
        Requires.IsNotNull(container,"container");
    }

    private SimpleInjectorWebApiDependencyResolver(Container container,bool beginScope)
    {
        this.container = container;

        if (beginScope)
        {
            this.scope = container.BeginExecutionContextScope();
        }
    }

    IDependencyScope IDependencyResolver.BeginScope()
    {
        return new SimpleInjectorWebApiDependencyResolver(this.container,beginScope: true);
    }

    object IDependencyScope.GetService(Type serviceType)
    {
        if (!serviceType.IsAbstract && typeof(IHttpController).IsAssignableFrom(serviceType))
        {
            return this.container.GetInstance(serviceType);
        }

        return ((IServiceProvider)this.container).GetService(serviceType);
    }

    IEnumerable<object> IDependencyScope.GetServices(Type serviceType)
    {
        return this.container.GetAllInstances(serviceType);
    }

    void IDisposable.Dispose()
    {
        if (this.scope != null)
        {
            this.scope.Dispose();
        }
    }
}

切换到这个版本后一切正常.我仍然有潜在的问题CallContext.LogicalGetData和嵌套执行上下文,因为@Steven很友好地在评论中指出.因此,使用此解决方案需要您自担风险.