Crystal Report在ASP.NET MVC应用中部署应用程序时无法加载

Question

在发布应用程序后，我会出现错误。即使在我投放的同一台计算机上也是如此。在开发一切时，一切都很好。

The system cannot find the path specified.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 
Exception Details: System.Runtime.InteropServices.COMException: The system cannot find the path specified.
Source Error: 
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace: 

[COMException (0x80004005): The system cannot find the path specified.
]
   CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocumentClass.Open(Object& DocumentPath, Int32 Options) +0
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.Open(Object& DocumentPath, Int32 Options) +126
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +315
[CrystalReportsException: Load report failed.]
   CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDocumentIsOpened() +503
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename, OpenReportMethod openMethod, Int16 parentJob) +1495
   CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String filename) +99
   ProductionTracker.Web.Reports.CrystalReportGenerator.GenerateReportInPDF(DataTable tb, String reportName) in C:UsersbarrysourcereposProductionTracker.WebProductionTracker.WebReportsControllerCrystalReportGenerator.cs:37
   System.Web.Mvc.<>c__DisplayClass1.<WrapVoidAction>b__0(ControllerBase controller, Object[] parameters) +18
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +229
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
   System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +39
   System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +77
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +72
   System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +387
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
   System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +38
   System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188
   System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
   System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
   System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +43
   System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128

我尝试了此https://stackoverflow.com/a/14602748/10852981，我无法弄清楚在我的MVC应用中将其添加到哪里。我检查了文件上的权限，并允许所有人。我将.RPT文件包括在项目中。我不确定我该怎么办。

这是我下载文件的代码

public static void GenerateReportInPDF(DataTable tb, string reportName)
        {
            using (var reportDocument = new ReportDocument())
            {
                var reportPath = HttpContext.Current.Server.MapPath("~/") + "Reports//" +  reportName;
                reportDocument.Load(reportPath);
                reportDocument.Database.Tables[0].SetDataSource(tb);             
       reportDocument.ExportToHttpResponse(ExportFormatType.PortableDocFormat, HttpContext.Current.Response, false, reportName);
                reportDocument.Close();
            }
        }

此行ProductionTracker.Web.Reports.CrystalReportGenerator.GenerateReportInPDF(DataTable tb, String reportName) in C:UsersbarrysourcereposProductionTracker.WebProductionTracker.WebReportsControllerCrystalReportGenerator.cs:37看起来错了，因为它来自我的开发存储库。但我不确定该怎么做。

Answer 1

我最终解决了它。我之所以发生错误的原因是因为它一旦发布就将其保存到bin文件夹中。因此，我需要相应地改变路径。我将/bin/添加到
var reportPath = HttpContext.Current.Server.MapPath("~/") + "Reports//" + reportName;像这样var Report Path = httpcontext.current.server.mappath("〜/bin/"( " reports//" reportName;然后它起作用！