WebAPI2使用AutoFac依赖注入完整解决方案。

时间:2020-12-03 19:05:01

WebApi2上进行依赖注入,在百度里能搜到的的完整解决方案的文章少之又少,缺胳膊断腿。

和MVC5依赖注入的不同之处,并且需要注意的地方,标记在注释当中。上Global代码:

namespace S2S.WebApi
{
public class WebApiApplication : System.Web.HttpApplication
{
protected void Application_Start()
{

//----AutoFac DI------
var builder = new ContainerBuilder();
SetupResolveRules(builder);
builder.RegisterApiControllers(Assembly.GetExecutingAssembly()); //RegisterApiControllers方法
var container = builder.Build();
HttpConfiguration config = GlobalConfiguration.Configuration;//注意此处HttpConfiguration类的 config对象,一定不要new,要从GlobalConfiguration获取
config.DependencyResolver = (new AutofacWebApiDependencyResolver(container)); //注意此处与MVC依赖注入不同
//---------------------------------------------------------
AreaRegistration.RegisterAllAreas();
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);



AreaRegistration.RegisterAllAreas();
GlobalConfiguration.Configure(WebApiConfig.Register);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}

/// <summary>
/// AutoFac
/// </summary>
/// <param name="builder"></param>
private static void SetupResolveRules(ContainerBuilder builder)
{

var assembly = Assembly.Load("s2s.BLL"); //根据程序集名称加载程序集
builder.RegisterAssemblyTypes(assembly).SingleInstance();//每次都返回同一个实例
builder.RegisterAssemblyTypes(assembly).Where(t => t.Name.EndsWith("Service")).AsImplementedInterfaces();

}
}
}

 也没有太多需要解释的地方,Controller中还是构造器注入。开发中已经亲测有效。 

   可以收藏,以后查看。