Question

我有一个MVC4应用程序（.NET 4.5）。我在这个项目中有两个数据类：

public class Address
{
    public string StreetNumber { get; set; }
    public string StreetName { get; set; }
    public string City { get; set; }
    public string County { get; set; }
    public string State { get; set; }
}

public class OrderDetail
{
    public int Id { get; set; }
    public string StreetNumber { get; set; }
    public string StreetName { get; set; }
    public string City { get; set; }
    public string County { get; set; }
    public string State { get; set; }
    public string CustomerEmail { get; set; }
    public DateTime InsertTimeStamp { get; set; }
    public bool IsProcessed { get; set; }
    public DateTime? ProcessedTimeStamp { get; set; }
}

我正在使用AutoMapper从OrderDetail映射到Address类，如下所示

public class OrderDetailToAddressMappingProfile : Profile
{
    protected override void Configure()
    {
        Mapper.CreateMap<OrderDetail, Address>();
    }
}

public static class AutoMapperMvcConfiguration
{
    public static void Configure()
    {
        Mapper.Initialize(x =>
            {
                x.AddProfile<OrderDetailToAddressMappingProfile>();
                x.AddProfile<AddressToPropertyAddressMappingProfile>();
            });
    }
}

我在global.asax类中调用AutoMapperMvcConfiguration.Configure（）。当我运行这个应用程序并获得我正在尝试从OrderDetail对象到Address对象的映射的代码时，我得到以下异常：

“缺少类型映射配置或不支持的映射”。

似乎Global.asax类的Application_Start没有被触发。我尝试了以下三点来得出这个结论：

我尝试通过设置断点进行调试，但代码在global.asax中没有中断。我知道Application_Start只被触发一次所以在调试之前我停止了内部VS Web服务器，但它仍然没有中断。
我在映射代码之前使用了Mapper.FindTypeMapFor（）并返回null。
如果我在映射代码之前中断并手动调用AutoMapperMvcConfiguration.Configure（），我看不到这个映射问题。

不确定为什么Application_Start没有触发。我不明白我的MVC应用程序如果没有引发Application_Start就可以运行，因为也从Application_Start调用了路由寄存器方法。

如果我错过了什么，请告诉我。

更新1：

以下是使用映射的代码：

    public ActionResult Process(int orderId)
    {
        OrderDetail orderDetail = _hydrantFlowOrderAccessor.GetHydrantFlowOrderById(orderId);

        if (orderDetail != null)
        {
            Address address = Mapper.Map<OrderDetail, Address>(orderDetail);
            GeoLocation geoLocation = _geoDataAccessor.GetGeoLocation(Mapper.Map<Address, PropertyAddress>(address));

            IEnumerable<FlowTest> flowTests =
                _hydrantFlowDataAccessor.GetFlowTestByAddress(address);

            Process processModel = new Process
            {
                FlowTests = flowTests,
                StreetName = address.StreetName,
                Latitude = geoLocation.Latitude,
                Longitude = geoLocation.Longitude
            };

            return View(processModel);
        }

        return null;
    }

堆栈追踪：

[AutoMapperMappingException：缺少类型映射配置或不支持的映射。

映射类型： OrderDetail - ＆gt;地址 ISO.NPCEfficiencies.DashBoard.Models.HydrantFlows.OrderDetail - ＆gt; ISO.NPCEfficiencies.DashBoard.Models.HydrantFlows.Address

目的地路径：地址

来源价值： ISO.NPCEfficiencies.DashBoard.Models.HydrantFlows.OrderDetail] AutoMapper.MappingEngine.AutoMapper.IMappingEngineRunner.Map（ResolutionContext context）+861 AutoMapper.MappingEngine.Map（对象源，类型sourceType，类型destinationType，动作1 opts) +196 AutoMapper.MappingEngine.Map(TSource source) +257 AutoMapper.Mapper.Map(TSource source) +107 ISO.NPCEfficiencies.DashBoard.Controllers.HydrantFlowController.Process(Int32 orderId) in g:\Projects\Visual Studio 2012\NPCDashBoard\ISO.NPCEfficiencies.DashBoard\Controllers\HydrantFlowController.cs:60 lambda_method(Closure , ControllerBase , Object[] ) +161 System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +14 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary 2个参数）+211 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod（ControllerContext controllerContext，ActionDescriptor actionDescriptor，IDictionary 2 parameters) +27 System.Web.Mvc.<>c__DisplayClass13.<InvokeActionMethodWithFilters>b__10() +55 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func 1 continuation）+253 System.Web.Mvc。＆lt;＆gt; c_ DisplayClass15.b _12（）+21 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters（ControllerContext controllerContext，IList 1 filters, ActionDescriptor actionDescriptor, IDictionary 2个参数）+191 System.Web.Mvc.ControllerActionInvoker.InvokeAction（ControllerContext controllerContext，String actionName）+324 System.Web.Mvc。＆lt;＆gt; c_ DisplayClass1d.b _19（）+23 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass1.b _0（）+19 System.Web.Mvc.Async。＆lt;＆gt; c_ DisplayClass8 1.<BeginSynchronous>b__7(IAsyncResult _) +10 System.Web.Mvc.Async.WrappedAsyncResult 1.End（）+62 System.Web.Mvc.Controller.EndExecuteCore（IAsyncResult asyncResult）+57 System.Web.Mvc.Async。＆lt;＆gt; c _DisplayClass4.b__3（IAsyncResult ar）+23 System.Web.Mvc.Async.WrappedAsyncResult 1.End() +62 System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +47 System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10 System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +25 System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +23 System.Web.Mvc.Async.WrappedAsyncResult 1.End（）+62 System.Web.Mvc.MvcHandler.EndProcessRequest（IAsyncResult asyncResult）+47 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest（IAsyncResult result）+9 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute（）+9629708 System.Web.HttpApplication.ExecuteStep（IExecutionStep step，Boolean＆amp; completedSynchronously）+155

更新2：

Global.asax中

public class MvcApplication : SpringMvcApplication
{
    protected void Application_Start()
    {
        AutoMapperMvcConfiguration.Configure();

        AreaRegistration.RegisterAllAreas();

        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }
}

Answer 1

我尝试将Application_Start方法的签名更改为

public void Application_Start(object sender, EventArgs e)

正如@WiktorZychla所建议但我得到一个警告，它在SpringMvcApplication类中隐藏了相同的方法。然后我尝试通过将方法签名更改为

来覆盖SpringMvcApplication中的Application_Start虚拟方法

protected override void Application_Start(object sender, EventArgs e)

这就是诀窍。

Global.asax问题中的自动映射配置

1 个答案: