Question

我正在使用Unity将新类实例化到控制器构造函数中，并将注入的类保存在控制器内的属性中。然后我想使用ActionFilter来查看注入的类是否有一些我在其构造函数中验证的属性。那么有没有办法使用ActionFilter来验证注入类的属性？

提前致谢

Answer 1

这样的东西？：

public class ValidateActionFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var yourController = filterContext.Controller as YourController;

        if (yourController == null)
        {
            throw new InvalidOperationException("It is not YourController !!!");
        }

        // It is YourController - validate here
        var yourProperty = yourController.YourProperty;

        // UPDATED ***************************
        // or test whether controller has property

        var property = filterContext.Controller.GetType().GetProperty("YourProperty");

        if(property == null)
        {
            throw new InvalidOperationException("There is no YourProperty !!!");
        }
    }
}

ASP.NET MVC - 访问ActionFilter中的控制器属性

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