未调用ActionFilterAttribute

Question

我有这个自定义操作过滤器：

public class PermissionChecker: ActionFilterAttribute
{
    private int _permissionId { get; set; }
    private IUserSelectorService _userService { get; set; }

    public PermissionChecker(int permissionId)
    {
        _permissionId = permissionId;
        _userService = new UserSelectorService();
    }

    public PermissionChecker(int permissionId, IUserSelectorService userService)
    {
        _permissionId = permissionId;
        _userService = userService;
    }

    public override void OnActionExecuting(HttpActionContext actionContext)
    {
        base.OnActionExecuting(actionContext);
    }
}

我在行动中设置了它：

public class HomeController : Controller
{
    [PermissionChecker(1)]
    public ActionResult Index()
    {
        return View();
    }
}

但它不起作用！即使在PermissionChecker的构造函数中，代码也不会传入onActionExecuting。

Answer 1

OnActionExecuting的签名不正确，应该有ActionExecutingContext：

提供ActionFilterAttribute类的ActionExecuting方法的上下文。

public override void OnActionExecuting(ActionExecutingContext filterContext){
    base.OnActionExecuting(filterContext);
}