csharp autofac webapi配置，在dll加载时预处理。

Posted 2021-05-12

using Autofac;
using Autofac.Integration.WebApi;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Http;

[assembly: PreApplicationStartMethod(typeof(XXXNamespace.IocConfig), "RegisterAndSetResolver")]

namespace XXXNamespace
{
    public sealed class IocConfig
    {
        public static void RegisterAndSetResolver()
        {
            var configuration = GlobalConfiguration.Configuration;
            var builder = new ContainerBuilder();

            //builder.RegisterType<MyDbContext>().InstancePerRequest();
            builder.RegisterAssemblyTypes(typeof(BaseService).Assembly)
                .Where(t => t.Name.EndsWith("Service"))
                .AsImplementedInterfaces()
                .InstancePerRequest();

            builder.RegisterApiControllers(Assembly.GetExecutingAssembly());
            builder.RegisterWebApiFilterProvider(configuration);

            var container = builder.Build();
            // Set the WebApi dependency resolver.  
            configuration.DependencyResolver = new AutofacWebApiDependencyResolver(container);
        }
    }
}