如何传递错误消息到MVC 5中的错误视图？ [英] How to pass error message to error view in MVC 5?

问题描述

Web.Config

 < customErrors mode =On>< / customErrors> 
  

代码更改

公共类CustomExceptionFilter：HandleErrorAttribute
{
public override void OnException（ExceptionContext filterContext）
{

// _ logger .Error（未捕获异常，filterContext.Exception）;

ViewResult view = new ViewResult（）;
view.ViewName =Error;
filterContext.Result = view;

//准备响应代码。
filterContext.ExceptionHandled = true;
filterContext.HttpContext.Response.Clear（）;
filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
}
}

Global.asax / p>

  protected void Application_Start（）
 {
 AreaRegistration.RegisterAllAreas（）; 
 FilterConfig.RegisterGlobalFilters（GlobalFilters.Filters）; 
 RouteConfig.RegisterRoutes（RouteTable.Routes）; 
 BundleConfig.RegisterBundles（BundleTable.Bundles）; 
 
 //处理异常
 GlobalFilters.Filters.Add（new CustomExceptionFilter（））; 
 
 var unityContainer = ModelContainer.Instance; 
 DependencyResolver.SetResolver（new UnityDependencyResolver（unityContainer））; 
} 
  

错误查看

  @ * @ model System.Web.Mvc.HandleErrorAttribute * @ 
< div class =row> 
< div class =col-sm-12> 
< h1>错误< / h1> 
< div class =col-sm-12> 
< h2>处理您的请求时发生错误。< / h2> 
< / div> 
< / div> 
< / div> 
  

在我的错误视图中，我想显示异常消息。

另外，我还有一个要求显示不同的消息，以防 404错误存在

解决方案

  public class CustomExceptionFilter：HandleErrorAttribute {
 public override void OnException（ExceptionContext filterContext）{
 
 var controller = filterContext.Controller as Controller; 
 controller.Response.StatusCode =（int）System.Net.HttpStatusCode.InternalServerError; 
 controller.Response.TrySkipIisCustomErrors = true; 
 filterContext.ExceptionHandled = true; 
 
 var controllerName =（string）filterContext.RouteData.Values [controller]; 
 var actionName =（string）filterContext.RouteData.Values [action]; 
 var exception = filterContext.Exception; 
 //需要一个模型来将异常数据传递给错误视图
 var model = new HandleErrorInfo（exception，controllerName，actionName）; 
 
 var view = new ViewResult（）; 
 view.ViewName =Error; 
 view.ViewData = new ViewDataDictionary（）; 
 view.ViewData.Model = model; 
 
 //将任何视图数据从原始控件复制到错误视图
 //，以便它们可以访问。 
 var viewData = controller.ViewData; 
 if（viewData！= null&& viewData.Count> 0）{
 viewData.ToList（）。ForEach（view.ViewData.Add）; 
} 
 
 //而不是这个
 ////filterContext.Result = view; 
 //允许错误视图显示在同一个URL上发生错误
 view.ExecuteResult（filterContext）; 
 
 //应该在视图已经被渲染以提高性能之后执行任何日志记录。 
 //_logger.Error(\"Unccept exception，exception）; 
 
} 
} 
  

Error.cshtml

  @model System.Web.Mvc.HandleErrorInfo 
 @ {
 ViewBag.Title =Error; 
} 
< div class =row> 
< div class =col-sm-12> 
< h1>错误< / h1> 
< div class =col-sm-12> 
< h2>处理您的请求时发生错误。< / h2> 
< / div> 
< div> 
 @ {
 if（Model！= null&& Model.Exception！= null）{
< h5>以下是可以传递给管理员的一些信息< / h5> ; 
< h3>路径：~/@string.Format（{0} / {1}，Model.ControllerName，Model.ActionName）< / h3> 
< h4>错误：@ Model.Exception.GetType（）。Name< / h4> 
 if（Request.IsLocal）{
< h4>消息：@ Model.Exception.Message< / h4> 
< h5> @ Model.Exception.StackTrace< / h5> 
} 
} 
} 
< / div> 
< / div> 
< / div> 
  

Web.Config

 < customErrors mode =Off/> 
  

I am working on exception handling and have written below code for the same.

Web.Config

<customErrors mode="On"></customErrors>

Code Changes

public class CustomExceptionFilter : HandleErrorAttribute
{
    public override void OnException(ExceptionContext filterContext)
    {

        //_logger.Error("Uncaught exception", filterContext.Exception);

        ViewResult view = new ViewResult();
        view.ViewName = "Error";
        filterContext.Result = view;

        // Prepare the response code.
        filterContext.ExceptionHandled = true;
        filterContext.HttpContext.Response.Clear();
        filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
    }
}

Global.asax

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);

    // To handle exceptions
    GlobalFilters.Filters.Add(new CustomExceptionFilter());

    var unityContainer = ModelContainer.Instance;
    DependencyResolver.SetResolver(new UnityDependencyResolver(unityContainer));
}

Error View

@*@model System.Web.Mvc.HandleErrorAttribute*@
<div class="row">
    <div class="col-sm-12">
        <h1>Error</h1>
        <div class="col-sm-12">
            <h2>An error occurred while processing your request.</h2>
        </div>
    </div>
</div>

In my error view, I want to show the exception message.

Also I have one more requirement to show different message in case of 404 error exists.

解决方案

public class CustomExceptionFilter : HandleErrorAttribute {
    public override void OnException(ExceptionContext filterContext) {

        var controller = filterContext.Controller as Controller;
        controller.Response.StatusCode = (int)System.Net.HttpStatusCode.InternalServerError;
        controller.Response.TrySkipIisCustomErrors = true;
        filterContext.ExceptionHandled = true;

        var controllerName = (string)filterContext.RouteData.Values["controller"];
        var actionName = (string)filterContext.RouteData.Values["action"];
        var exception = filterContext.Exception;
        //need a model to pass exception data to error view
        var model = new HandleErrorInfo(exception, controllerName, actionName);

        var view = new ViewResult();
        view.ViewName = "Error";
        view.ViewData = new ViewDataDictionary();
        view.ViewData.Model = model;

        //copy any view data from original control over to error view
        //so they can be accessible.
        var viewData = controller.ViewData;
        if (viewData != null && viewData.Count > 0) {
            viewData.ToList().ForEach(view.ViewData.Add);
        }

        //Instead of this
        ////filterContext.Result = view;
        //Allow the error view to display on the same URL the error occurred
        view.ExecuteResult(filterContext);

        //should do any logging after view has already been rendered for improved performance.
        //_logger.Error("Uncaught exception", exception);

    }
}

Views/Shared/Error.cshtml

@model System.Web.Mvc.HandleErrorInfo
@{
    ViewBag.Title = "Error";
}
<div class="row">
    <div class="col-sm-12">
        <h1>Error</h1>
        <div class="col-sm-12">
            <h2>An error occurred while processing your request.</h2>
        </div>
        <div>
            @{
                if (Model != null && Model.Exception != null) {
                    <h5>Here is some information you can pass on to the administrator</h5>
                    <h3>Path: ~/@string.Format("{0}/{1}", Model.ControllerName, Model.ActionName)</h3>
                    <h4>Error: @Model.Exception.GetType().Name</h4>
                    if (Request.IsLocal) {
                        <h4>Message: @Model.Exception.Message</h4>
                        <h5>@Model.Exception.StackTrace</h5>
                    }
                }
            }
        </div>
    </div>
</div>

Web.Config

<customErrors mode="Off"/>

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