我有两个操作筛选器,我需要一个在另一个之前显式执行的筛选器。我没有任何运气让他们合作并按预期的顺序执行。ActionFilters未按预期顺序执行,可能是autofac问题
public class RedirectSingleAttribute : ActionFilterAttrbute {
public UrlHelper Url { get; set; } // <= injected in OnActivating
public override void OnActionExecuted(ActionExectuedContext filterContext) {
/* ... magic ... */
}
}
public class JsonRedirectAttribute : ActionFilterAttribute {
public override void OnActionExecuted(ActionExecutedContext filterContext) {
/* ... magic ... */
}
}
public class SearchController : Controller {
[RedirectSingle(Order = 1)]
[JsonRedirect(Order = 2)]
public ActionResult Query(SearchCriteria criteria) {
/* some code */
}
}
我的模块看起来像......
/* ... */
builder.RegisterControllers(typeof(MvcApplication).Assembly);
/* ... */
builder.RegisterType<RedirectSingleAttribute>();
builder.RegisterType<JsonRedirectAttribute>()
.OnActivating(c => c.Instance.Url = c.Context.Resolve<UrlHelper>());
/* ... */
builder.RegisterFilterProvider();
我把两者的OnActionExecuted
方法断点,并JsonRedirectAttribute
始终保持第一执行。我尝试了颠倒顺序,并尝试使用AsActionFilterFor
没有成功。
从操作方法中删除属性,并使用autofac注册样式,属性根本不会执行。
/* this ended up not working all, i.e. the action filters were never invoked */
builder.RegisterType<RedirectSingleAttribute>()
.AsActionFilterFor<SearchController>(c => c.Query(default(SearchCriteria)), 1);
builder.RegisterType<JsonRedirectAttribute>()
.OnActivating(c => c.Instance.Url = c.Context.Resolve<UrlHelper>())
.AsActionFilterFor<SearchController>(c => c.Query(default(SearchCriteria)), 2);
虽然我相信我尝试颠倒了顺序,但看起来并不是这样,因为我刚刚尝试颠倒顺序并正确执行。这篇文章帮助解释它:http://stackoverflow.com/questions/6152420/order-property-of-actionfilter-from-lowest-to-greatest-or-vice-versa – Dave