我正在使用 EPPlus(向开发人员提供一个很棒的库的道具)来制作一个将在浏览器中下载的 Excel 文档。在生成 Excel 文档的代码中,我有几行旨在将图像文件包含在 Excel 文档中。
Image logoImg = Image.FromFile(Server.MapPath("~/Images/bill_logo.png"));
var logo = ws.Drawings.AddPicture("Logo", logoImg);
当我在我的机器上本地运行项目时,图像按预期显示。但是,当我在 Azure 中部署到我们的测试环境时,我收到以下错误:
System.IO.FileNotFoundException: C:\DWASFiles\Sites\sitename\VirtualDirectory0\site\wwwroot\Images\bill_logo.png
at System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement)
at System.Drawing.Image.FromFile(String filename)
at emergePortal.Web.Controllers.BillingController.buildWorksheet(ExcelWorksheet ws, String sheetName, IEnumerable`1 lineItems) in c:\a\src\emergePortal\emergePortal.Web\Controllers\BillingController.cs:line 202
at emergePortal.Web.Controllers.BillingController.getBill(Int32 billMonth, Int32 billYear) in c:\a\src\emergePortal\emergePortal.Web\Controllers\BillingController.cs:line 106
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass42.<BeginInvokeSynchronousActionMethod>b__41()
at System.Web.Mvc.Async.AsyncResultWrapper.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<>c__DisplayClass39.<BeginInvokeActionMethodWithFilters>b__33()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass4f.<InvokeActionMethodFilterAsynchronously>b__49()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__36(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`1.End()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<>c__DisplayClass2a.<BeginInvokeAction>b__20()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass25.<BeginInvokeAction>b__22(IAsyncResult asyncResult)
引用此图像文件以使其跨环境工作的最佳方法是什么?