blocks|key|665010|text|方法是使用属性注入并使用[Inject]属性来修饰属性：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|665011|public+class+AuthorizeAttribute+:+FilterAttribute,+IAuthorizationFilter
{
++++[Inject]
++++public+IUserService+UserService+{+get;+set;+}

++++private+string[]+roles;
++
++++...
}|code-block|syntax|javascript|665012|构造函数注入不能很好地处理属性，因为你将不能再用它们来装饰控制器/动作。您只能将构造函数注入与Ninject中的过滤器绑定语法一起使用：|665013|public+class+AuthorizeAttribute+:+FilterAttribute,+IAuthorizationFilter
{
++++private+readonly+IUserService+userService;

++++private+string[]+roles;

++++public+AuthorizeAttribute(IUserService+userService,+params+string[]+roles)
++++{
++++++++this.userService+=+userService;
++++++++this.roles+=+roles;
++++}
++
++++...
}|665014|然后：|665015|internal+class+SiteModule+:+Ninject.Modules.NinjectModule
{
++++public+override+void+Load()
++++{
++++++++Bind<IUserService>().To<UserService>();

++++++++this.BindFilter<AuthorizeAttribute>(FilterScope.Controller,+0)
++++++++++++.WhenControllerType<AdminController>();
++++}
}|665016|BindFilter<>扩展方法是在Ninject.Web.Mvc.FilterBindingSyntax名称空间中定义的，因此在内核上调用它之前，请确保已将其纳入作用域。|665017|entityMap^0|C|8|0|0|0|0|0|0|0|C|I|Z|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|12|8|@]|D|@]|E|$]]|$1|Q|3|R|5|H|7|13|8|@]|D|@]|E|$I|J]]|$1|S|3|T|5|6|7|14|8|@$9|15|A|16|B|C]|$9|17|A|18|B|C]]|D|@]|E|$]]|$1|U|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|V|$]]

On way would be to use a property injection and decorate the property with the <code>[Inject]</code> attribute:
<pre><code>public class AuthorizeAttribute : FilterAttribute, IAuthorizationFilter
{
 [Inject]
 public IUserService UserService { get; set; }

 private string[] roles;
 
 ...
}
</code></pre>
Constructor injection doesn't work well with attributes as you will no longer be able to decorate controllers/actions with them. You could only use constructor injection with the filter binding syntax in Ninject:
<pre><code>public class AuthorizeAttribute : FilterAttribute, IAuthorizationFilter
{
 private readonly IUserService userService;

 private string[] roles;

 public AuthorizeAttribute(IUserService userService, params string[] roles)
 {
 this.userService = userService;
 this.roles = roles;
 }
 
 ...
}
</code></pre>
and then:
<pre><code>internal class SiteModule : Ninject.Modules.NinjectModule
{
 public override void Load()
 {
 Bind&lt;IUserService&gt;().To&lt;UserService&gt;();

 this.BindFilter&lt;AuthorizeAttribute&gt;(FilterScope.Controller, 0)
 .WhenControllerType&lt;AdminController&gt;();
 }
}
</code></pre>
The <code>BindFilter&lt;&gt;</code> extension method is defined in the <code>Ninject.Web.Mvc.FilterBindingSyntax</code> namespace so make sure you have brought that into scope before calling it on a kernel.

blocks|key|882000|text|请看这个答案：Custom+Authorization+MVC+3+and+Ninject+IoC|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|882001|如果你想使用构造函数注入，那么你需要创建一个属性和一个过滤器。|882002|///+Marker+attribute
public+class+MyAuthorizeAttribute+:+FilterAttribute+{+}

///+Filter
public+class+MyAuthorizeFilter+:+IAuthorizationFilter
{
++++++private+readonly+IUserService+_userService;
++++++public+MyAuthorizeFilter(IUserService+userService)
++++++{
++++++++++_userService+=+userService;
++++++}

++++++public+void+OnAuthorization(AuthorizationContext+filterContext)
++++++{
++++++++++var+validUser+=+_userService.CheckIsValid();

++++++++++if+(!validUser)
++++++++++{
++++++++++++++filterContext.Result+=+new+RedirectToRouteResult(new+RouteValueDictionary+{+{+"action",+"AccessDenied"+},+{+"controller",+"Error"+}+});
++++++++++}
++++++}
}|code-block|syntax|javascript|882003|绑定：|882004|this.BindFilter<MyAuthorizeFilter>(System.Web.Mvc.FilterScope.Controller,+0).WhenControllerHas<MyAuthorizeAttribute>();|882005|控制器：|882006|[MyAuthorizeAttribute]
public+class+YourController+:+Controller
{
++++//+...
}|882007|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/5572257/custom-authorization-mvc-3-and-ninject-ioc/5572752#5572752^0|7|16|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|D|3|E|5|6|7|14|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|15|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|16|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|17|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|18|8|@]|9|@]|C|$]]|$1|Q|3|R|5|H|7|19|8|@]|9|@]|C|$I|J]]|$1|S|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|T|$U|$5|V|W|X|C|$Y|Z]]]]

See this answer: <a href="https://stackoverflow.com/questions/5572257/custom-authorization-mvc-3-and-ninject-ioc/5572752#5572752">Custom Authorization MVC 3 and Ninject IoC</a>
If you want to use constructor injection then you need to create an attribute and a filter.
<pre><code>/// Marker attribute
public class MyAuthorizeAttribute : FilterAttribute { }

/// Filter
public class MyAuthorizeFilter : IAuthorizationFilter
{
 private readonly IUserService _userService;
 public MyAuthorizeFilter(IUserService userService)
 {
 _userService = userService;
 }

 public void OnAuthorization(AuthorizationContext filterContext)
 {
 var validUser = _userService.CheckIsValid();

 if (!validUser)
 {
 filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary { { &quot;action&quot;, &quot;AccessDenied&quot; }, { &quot;controller&quot;, &quot;Error&quot; } });
 }
 }
}
</code></pre>
Binding:
<pre><code>this.BindFilter&lt;MyAuthorizeFilter&gt;(System.Web.Mvc.FilterScope.Controller, 0).WhenControllerHas&lt;MyAuthorizeAttribute&gt;();
</code></pre>
Controller:
<pre><code>[MyAuthorizeAttribute]
public class YourController : Controller
{
 // ...
}
</code></pre>

blocks|key|882038|text|我找到了一个简单的解决方案，用于任何不是由Ninject处理构造的场合：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|882039|var+session+=+(IMyUserService)DependencyResolver.Current.GetService(typeof+(IMyUserService));|code-block|syntax|javascript|882040|实际上，这正是我在自定义AuthorizeAttribute中使用的。这比必须实现一个单独的FilterAttribute容易得多。|offset|length|style|CODE|882041|entityMap^0|0|0|C|I|1A|F|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]|$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|N|$]]

I found a simple solution for any occasion where construction is not handled by Ninject:
<pre><code>var session = (IMyUserService)DependencyResolver.Current.GetService(typeof (IMyUserService));
</code></pre>
Actually this is exactly what I am using with my custom <code>AuthorizeAttribute</code>. Much easier than having to implement a separate <code>FilterAttribute</code>.

I'm writing a custom Authorization Filter for asp.net mvc 3. I need to inject a userservice into the class but I have no idea how to do this.

<pre><code>public class AuthorizeAttribute : FilterAttribute, IAuthorizationFilter
{
 private IUserService userService;
 private string[] roles;

 public AuthorizeAttribute(params string[] roles)
 {
 this.roles = roles;
 }

 public void OnAuthorization(AuthorizationContext filterContext)
 {
 throw new NotImplementedException();
 }
}
</code></pre>

I'm using ninject for dependency injection. I do not want to use a Factory or service locator pattern.

My bindings look like this in the global.acsx:

<pre><code> internal class SiteModule : NinjectModule
 {
 public override void Load()
 {
 Bind&lt;IUserService&gt;().To&lt;UserService&gt;();
 }
 }
</code></pre>

Dependency Injection with Ninject and Filter attribute for asp.net mvc

我正在为asp.net MVC3编写一个自定义的授权过滤器。我需要将一个用户服务注入到这个类中，但我不知道该怎么做。public class AuthorizeAttribute : FilterAttribute, IAuthorizationFilter{    private IUserService userS...

问基于对象和过滤器属性的asp.net mvc依赖注入
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