404重定向不适用于MVC3

拉瑟·埃德斯维克（Lasse Edsvik）

我有一个MVC3网站，当时我正在尝试为访问数据库中内容的小型网站构建自定义错误页面。

在我的配置中，我得到了：

<system.web>
  <customErrors mode="On">
    <error statusCode="404" redirect="/404" />
    <error statusCode="500" redirect="/error/500.html" />
  </customErrors>

当我直接在浏览器中访问/ 404路由时，它可以工作。

现在显示标准的“ 404页面未找到”。

在我的控制器中，我得到了：

public ActionResult ShowPage(int test)
{
     var page = _rep.GetPage(test);

     if(page == null)
         return HttpNotFound();    
     //....
}

这里可能缺少什么？感觉它在配置中缺少的东西

罗宾·范德纳普

对于自定义错误，我总是将以下方法放在global.asax中，这将激活我的错误控制器（基于此SO回答https://stackoverflow.com/a/5229581/426840）：

protected void Application_Error()
        {
            var exception = Server.GetLastError();
            var httpException = exception as HttpException;

            // Don't execute error controller for custom error mesages when custom error is disabled
            if (!HttpContext.Current.IsCustomErrorEnabled) return;

            Response.Clear();
            Server.ClearError();

            Response.StatusCode = 500;

            // Avoid IIS messing with custome errors https://stackoverflow.com/a/1719474/426840
            // Also https://stackoverflow.com/a/2345742/426840 for web.config
            Response.TrySkipIisCustomErrors = true;

            if (httpException != null)
            {
                Response.StatusCode = httpException.GetHttpCode();
            }

            var routeData = new RouteData();
            routeData.Values["controller"] = "Error";
            routeData.Values["action"] = Response.StatusCode != 404 ? "Index" : "NotFound";
            routeData.Values["exception"] = exception;
            routeData.Values["logId"] = logId;

            IController errorsController = new ErrorController();

            var rc = new RequestContext(new HttpContextWrapper(Context), routeData);

            errorsController.Execute(rc);
        }

错误控制器：

public class ErrorController : AuthorizedController
    {
        public ActionResult Index(string logId)
        {
            if (Request.IsAjaxRequest())
            {
                return new HttpStatusCodeResult(Response.StatusCode, Response.StatusDescription);
            }

            ViewBag.HttpStatusCode = Response.StatusCode;
            ViewBag.HttpStatusMessage = Response.StatusDescription;
            ViewBag.LogId = logId;

            return View("Error");
        }

        public ActionResult NotFound(string logId)
        {
            if (Request.IsAjaxRequest())
            {
                return new HttpStatusCodeResult(Response.StatusCode, Response.StatusDescription);
            }

            ViewBag.HttpStatusCode = Response.StatusCode;
            ViewBag.HttpStatusMessage = Response.StatusDescription;
            ViewBag.LogId = logId;

            return View("NotFound");
        }
    }

Web.config：

<customErrors mode="On" />

<system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <!-- Avoid IIS messing with custom errors https://stackoverflow.com/a/2345742/426840 -->
    <httpErrors existingResponse="PassThrough" />

  </system.webServer>

这适用于404，但也适用于所有其他错误。

本文收集自互联网，转载请注明来源。

如有侵权，请联系 [email protected] 删除。