检查为ASP.NET MVC2编写的http://lukesampson.com/post/471548689/entering-and-exiting-https-with-asp-net-mvc示例代码,我注意到他们可以通过访问filterContext.ActionDescriptor
和{{1}来检查自定义属性是否应用于当前操作或控制器分别:
filterContext.ActionDescriptor.ControllerDescriptor
检查自定义属性的操作和控制器的ASP.NET MVC 1方法是什么?在ASP.NET MVC 1中,我无法告诉public class ExitHttpsIfNotRequiredAttribute : FilterAttribute, IAuthorizationFilter {
public void OnAuthorization(AuthorizationContext filterContext) {
// snip
// abort if a [RequireHttps] attribute is applied to controller or action
if(filterContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes(typeof(RequireHttpsAttribute), true).Length > 0) return;
if(filterContext.ActionDescriptor.GetCustomAttributes(typeof(RequireHttpsAttribute), true).Length > 0) return;
// snip
}
}
。
答案 0 :(得分:21)
更好,更可靠*方法:
filterContext.ActionDescriptor.GetCustomAttributes(
typeof(RequireHttpsAttribute), true).Count> 0
虽然这可能只是MVC 3.0+。
答案 1 :(得分:14)
Goldplated版,适用于MVC5,可能是4/3:
filterContext.HasMarkerAttribute<RequireHttpsAttribute>()
使用这组助手扩展:
public static class MarkerAttributeExtensions
{
public static bool HasMarkerAttribute<T>(this AuthorizationContext that) {
return that.Controller.HasMarkerAttribute<T>()
|| that.ActionDescriptor.HasMarkerAttribute<T>();
}
public static bool HasMarkerAttribute<T>(this ActionExecutingContext that) {
return that.Controller.HasMarkerAttribute<T>()
|| that.ActionDescriptor.HasMarkerAttribute<T>();
}
public static bool HasMarkerAttribute<T>(this ControllerBase that) {
return that.GetType().HasMarkerAttribute<T>();
}
public static bool HasMarkerAttribute<T>(this Type that) {
return that.IsDefined(typeof(T), false);
}
public static IEnumerable<T> GetCustomAttributes<T>(this Type that) {
return that.GetCustomAttributes(typeof(T), false).Cast<T>();
}
public static bool HasMarkerAttribute<T>(this ActionDescriptor that) {
return that.IsDefined(typeof(T), false);
}
public static IEnumerable<T> GetCustomAttributes<T>(this ActionDescriptor that) {
return that.GetCustomAttributes(typeof(T), false).Cast<T>();
}
}
答案 2 :(得分:8)
这似乎有用......在ASP.NET MVC 1中是否有更好/更正确的方法?
if (filterContext.Controller.GetType().GetCustomAttributes(typeof(RequireHttpsAttribute), true).Length > 0)
return;
string action = (string)filterContext.RouteData.Values["action"];
if (!string.IsNullOrEmpty(action) && filterContext.Controller.GetType().GetMethod(action).GetCustomAttributes(typeof(RequireHttpsAttribute), true).Length > 0)
return;
答案 3 :(得分:1)
这在.NET Core 2.2中对我有用:
var controllerActionDescriptor = actionContext.ActionDescriptor作为ControllerActionDescriptor;
if (controllerActionDescriptor != null)
{
// Check if the attribute exists on the action method
if (controllerActionDescriptor.MethodInfo?.GetCustomAttributes(inherit: true)?.Any(a => a.GetType().Equals(typeof(CustomAttribute))) ?? false)
return true;
// Check if the attribute exists on the controller
if (controllerActionDescriptor.ControllerTypeInfo?.GetCustomAttributes(typeof(CustomAttribute), true)?.Any() ?? false)
return true;
}
答案 4 :(得分:0)
我正在使用MVC5,不得不使用以下内容从继承自ActionFilterAttribute并实现IAuthenticationFilter的类中进行检查。
If filterContext.ActionDescriptor.GetCustomAttributes(GetType(RequireHttpsAttribute), True).Any() OrElse filterContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes(GetType(RequireHttpsAttribute), True).Any() Then
' .. the given attribute is present ..
End If
我无法获得Ruben的解决方案来为我工作,但这可能是因为我搞砸了从C#到VB的转换。