过滤器的WebAPI团结 [英] WebApi Filter Unity
问题描述
Environement:团结和ASP.NET MVC的WebAPI
我按照从网页样本 HTTP: //www.asp.net/mvc/tutorials/hands-on-labs/aspnet-mvc-4-dependency-injection
之后做了一些修改,我找到一种方式来注入用于过滤的Controler
Environement : Unity and ASP.NET MVC WEBAPI I follow the sample from the webpage http://www.asp.net/mvc/tutorials/hands-on-labs/aspnet-mvc-4-dependency-injection And after to do some modifications, I find a way to inject Filter for Controler.
我用这个code在boostrapper.cs
I used this code in the boostrapper.cs
var container = new UnityContainer();
container.RegisterInstance<IFilterProvider>("FilterProvider", new FilterProvider(container));
container.RegisterInstance<IActionFilter>("LogActionFilter", new TraceActionFilter());
我添加了这个类FilterProvider
I add this class FilterProvider
public class FilterProvider : IFilterProvider
{
private IUnityContainer container;
public FilterProvider(IUnityContainer container)
{
this.container = container;
}
public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
foreach (IActionFilter actionFilter in this.container.ResolveAll<IActionFilter>())
{
yield return new Filter(actionFilter, FilterScope.First, null);
}
}
}
每一个方法被称为该控制器实现的一类叫做时间所以,我可以看到code堪称一流TraceActionFilter。
So each time a method is called by called a class which implemented Controller, I can see the code called in the class TraceActionFilter.
public class TraceActionFilter : IActionFilter
{
public void OnActionExecuted(ActionExecutedContext filterContext)
{
filterContext.HttpContext.Trace.Write("OnActionExecuted");
filterContext.HttpContext.Trace.Write("Action " + filterContext.ActionDescriptor.ActionName);
filterContext.HttpContext.Trace.Write("Controller " + filterContext.ActionDescriptor.ControllerDescriptor.ControllerName);
}
public void OnActionExecuting(ActionExecutingContext filterContext)
{
filterContext.HttpContext.Trace.Write("OnActionExecuting");
filterContext.HttpContext.Trace.Write("Action " + filterContext.ActionDescriptor.ActionName);
filterContext.HttpContext.Trace.Write("Controller " + filterContext.ActionDescriptor.ControllerDescriptor.ControllerName);
}
}
但我不网页,任何样品或正确的方式允许做同样的事情上找到:注入过滤器添加有关的WebAPI相同的行为。
唯一的办法是发现通过使用标签手动添加一个过滤器,不使用依赖注入。
你能提供什么帮助?
But I don't find on the web, any sample or right way permitting to do the same thing : inject filter for add the same behavior about the WebApi. The only way find is to add manually a filter by using tag, not used the dependency injection. Can you provide any help?
最好的问候,
亚历山大
Best regards, Alexandre
[更新第一个答案后]
我启动命令安装封装Unity.AspNet.WebApi允许访问到UnityConfig。
我加在Global.asax
[UPDATE AFTER THE FIRST ANSWER] I launch the command Install-Package Unity.AspNet.WebApi to permit to access to UnityConfig. I add in the global.asax
protected void Application_Start()
{
Bootstrapper.Initialise();
UnityWebApiActivator.Start();
ConfigureApi(GlobalConfiguration.Configuration); //line added
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
}
我添加的方法ConfigureApi()
I add in the method ConfigureApi()
void ConfigureApi(HttpConfiguration config)
{
var unity = new UnityContainer();
unity.RegisterType<ProductsApiController>();
unity.RegisterType<CategoriesApiController>();
unity.RegisterType<IProductService, ProductService>(
new HierarchicalLifetimeManager());
unity.RegisterType<IProductsDatabase, ProductsDatabase>(
new HierarchicalLifetimeManager());
unity.RegisterType<ICategorieService, CategorieService>(
new HierarchicalLifetimeManager());
unity.RegisterType<ICategoriesDatabase, CategoriesDatabase>(
new HierarchicalLifetimeManager());
unity.RegisterType<ILogProvider, ElmahProvider>(
new HierarchicalLifetimeManager());
unity.RegisterType<IRootController, RootController>(
new HierarchicalLifetimeManager());
config.DependencyResolver = new IoCContainer(unity);
//ADDED PARTS
var providers = GlobalConfiguration.Configuration.Services.GetFilterProviders().ToList();
config.Services.Add(
typeof(System.Web.Http.Filters.IFilterProvider),
new Filter2Provider(UnityConfig.GetConfiguredContainer()));
var defaultprovider = providers.First(p => p is System.Web.Http.Filters.ActionDescriptorFilterProvider);
config.Services.Remove(typeof(System.Web.Http.Filters.IFilterProvider), defaultprovider);
}
当我调用该方法... API / categoriesapi / GETALL
在TraceActionFilter断点不叫。
When I call the method ...api/categoriesapi/GetAll The breakPoint in TraceActionFilter is not called.
什么想法?我continu搜索。
any idea? I continu to search.
推荐答案
您需要创建一个自定义System.Web.Http.Filters.FilterProvider(注意,MVC具有相同名称的类在不同的命名空间):
You will need to create a custom System.Web.Http.Filters.FilterProvider (be aware that MVC has classes with the same names in a different namespace):
public class UnityActionFilterProvider
: System.Web.Http.Filters.ActionDescriptorFilterProvider,
System.Web.Http.Filters.IFilterProvider
{
private readonly IUnityContainer container;
public UnityActionFilterProvider(IUnityContainer container)
{
this.container = container;
}
public new IEnumerable<FilterInfo> GetFilters(HttpConfiguration configuration,
HttpActionDescriptor actionDescriptor)
{
foreach (IActionFilter actionFilter in container.ResolveAll<IActionFilter>())
{
// TODO: Determine correct FilterScope
yield return new FilterInfo(actionFilter, FilterScope.Global);
}
}
}
然后你需要在启动时设置过滤器供应商:
Then you will need to set the filter provider at startup:
var providers =
GlobalConfiguration.Configuration.Services.GetFilterProviders().ToList();
GlobalConfiguration.Configuration.Services.Add(
typeof(System.Web.Http.Filters.IFilterProvider),
new UnityActionFilterProvider(UnityConfig.GetConfiguredContainer()));
var defaultprovider = providers.First(p => p is ActionDescriptorFilterProvider);
GlobalConfiguration.Configuration.Services.Remove(
typeof(System.Web.Http.Filters.IFilterProvider),
defaultprovider);
您应该使用上面的团结引导程序进行的ASP.NET Web API 一>
使用属性类似的问题:的ASP.NET Web API - 把依赖注入ActionFilterAttribute
A similar question using attributes: ASP.NET Web API - Inject Dependencies Into ActionFilterAttribute
由于您使用的容器,以保持过滤器列表,那么你可以只注册FilterInfo的,而不是直接IActionFilter。
Since you are using the container to maintain the list of Filters then you could just register the FilterInfo directly instead of IActionFilter.
这篇关于过滤器的WebAPI团结的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!