asp.net mvc中在Filter中跳转千万不要使用Response.Redirect

如题，如果在Filter中用Response.Redirect,虽然URL是跳转了，但是之后的Filter和Action还是会执行，不仅浪费资源，还会产生一些不必要的错误，或许，这些错误仅在你的错误日志中能看到。

在Filter中错误使用跳转如下：

public class AnchorFilter : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext filterContext) { if (!string.IsNullOrEmpty(filterContext.HttpContext.Request.QueryString["r_Anchor"])) { filterContext.HttpContext.Response.Redirect(string.Format("{0}#{1}", filterContext.HttpContext.Request.Url. AbsolutePath, filterContext.HttpContext.Request. QueryString["r_Anchor"])); return; } base.OnActionExecuting(filterContext); } }

filterContext.HttpContext.Response.Redirect (string.Format("{0}#{1}",
filterContext.HttpContext.Request.Url.
AbsolutePath,
filterContext.HttpContext.Request.
QueryString["r_Anchor"]));

filterContext.HttpContext.Response.Redirect 就会产生后遗症，正确使用应该是：

filterContext.Result = new RedirectResult(string.Format("{0}#{1}",
filterContext.HttpContext.Request.Url.
AbsolutePath,
filterContext.HttpContext.Request.
QueryString["r_Anchor"]));

正确代码：

public class AnchorFilter : ActionFilterAttribute { public override void OnActionExecuting(ActionExecutingContext filterContext) { if (!string.IsNullOrEmpty(filterContext.HttpContext.Request.QueryString["r_Anchor"])) { filterContext.Result = new RedirectResult(string.Format("{0}#{1}", filterContext.HttpContext.Request.Url. AbsolutePath, filterContext.HttpContext.Request. QueryString["r_Anchor"])); //filterContext.HttpContext.Response.Redirect(string.Format("{0}#{1}", // filterContext.HttpContext.Request.Url. // AbsolutePath, // filterContext.HttpContext.Request. // QueryString["r_Anchor"])); return; } base.OnActionExecuting(filterContext); } }