在我的 asp.net mvc 5 Web 应用程序中处理 http 错误的推荐方法

Question

我需要一种方法来全局处理我的 asp.net mvc Web 应用程序中的 http 错误。如果对操作方法的调用是 Ajax，我执行了以下操作：-

$(document).ready(function () {
    $(document).ajaxError(function (e, xhr, textStatus, errorThrown) {
        if (xhr.status == 401)
            window.location = "/Account/Login";
        else if (xhr.status == 403 || xhr.status == 404)
            alert(xhr.statusText, 'Error');

        $(".loadingimage").hide();
    });

我的操作方法如下所示：-

 [CheckUserPermissions(Action = "Edit", Model = "Skill")]
      public async Task<ActionResult> DeleteKBLink(int? skillid,int? linktokbid)
      {
          if (skillid == null || linktokbid==null)
          {
              return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
          }
      var linktokb=     await unitofwork.SkillRepository.FindLinkToKB(linktokbid.Value);
      if (linktokb == null)
              {
                  return new HttpStatusCodeResult(404, "The link has already been deleted.");
              }

但我不确定如果请求不是 ajax，我该如何处理 http 错误？目前我将被重定向到 http 未找到页面.. thnaks

Answer 1

这个解决方案对我很有效...

[1]：从 Web.config 中删除所有“customErrors”和“httpErrors”

[2]：检查 'App_Start/FilterConfig.cs' 看起来像这样：

public class FilterConfig
{
    public static void RegisterGlobalFilters(GlobalFilterCollection filters)
    {
        filters.Add(new HandleErrorAttribute());
    }
}

[3]：在'Global.asax'中添加这个方法：

public void Application_Error(Object sender, EventArgs e)
{
    Exception exception = Server.GetLastError();
    Server.ClearError();

    var routeData = new RouteData();
    routeData.Values.Add("controller", "ErrorPage");
    routeData.Values.Add("action", "Error");
    routeData.Values.Add("exception", exception);

    if (exception.GetType() == typeof(HttpException))
    {
        routeData.Values.Add("statusCode", ((HttpException)exception).GetHttpCode());
    }
    else
    {
        routeData.Values.Add("statusCode", 500);
    }

    Response.TrySkipIisCustomErrors = true;
    IController controller = new ErrorPageController();
    controller.Execute(new RequestContext(new HttpContextWrapper(Context), routeData));
    Response.End();
}

[4]: 添加'Controllers/ErrorPageController.cs'

public class ErrorPageController : Controller
{
    public ActionResult Error(int statusCode, Exception exception)
    {
         Response.StatusCode = statusCode;
         ViewBag.StatusCode = statusCode + " Error";
         return View();
    }
}

[5]：在“视图/共享/Error.cshtml”中

@model System.Web.Mvc.HandleErrorInfo
@{
    ViewBag.Title = (!String.IsNullOrEmpty(ViewBag.StatusCode)) ? ViewBag.StatusCode : "500 Error";
}

<h1 class="error">@(!String.IsNullOrEmpty(ViewBag.StatusCode) ? ViewBag.StatusCode : "500 Error"):</h1>

//@Model.ActionName
//@Model.ContollerName
//@Model.Exception.Message
//@Model.Exception.StackTrace