如何設置ActionExecutingContext狀態代碼

Question

我正在使用本地化actionfilterattribute，它工作得很好，除了我需要它從/到/en重定向狀態代碼為301而不是302 。 我怎樣才能解決這個問題？

碼

public class Localize : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        // .. irrelevent logic here ..

        // Set redirect code to 301
        filterContext.HttpContext.Response.Status = "301 Moved Permanently";
        filterContext.HttpContext.Response.StatusCode = 301;

        // Redirect
        filterContext.Result = new RedirectResult("/" + cookieLanguage);

        base.OnActionExecuting(filterContext);
    }
}

證明

Answer 1

您可以創建自定義操作結果以執行永久重定向：

public class PermanentRedirectResult : ActionResult
{
    public string Url { get; private set; }

    public PermanentRedirectResult(string url)
    {
        this.Url = url;
    }

    public override void ExecuteResult(ControllerContext context)
    {
        var response = context.HttpContext.Response;
        response.StatusCode = 301;
        response.Status = "301 Moved Permanently";
        response.RedirectLocation = Url;
        response.End();
    }
}

您可以用來執行重定向：

public class Localize : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        // .. irrelevent logic here ..

        filterContext.Result = new PermanentRedirectResult("/" + cookieLanguage);
    }
}

Answer 2

RedirectResult有一個構造函數重載，它接受url和bool來指示重定向是否應該是永久性的：

filterContext.Result = new RedirectResult("/" + cookieLanguage, true);

從我所看到的，這應該在MVC 4中可用。