讀取文件時出錯

Question

當我點擊MVC頁面上的鏈接時，我無法打開文件。我收到以下消息。我在代碼中添加了模擬。我可以刪除並保存文件。

Access to the path '\servername\folder1\folder2\folder3\foder4\filename.pdf' is denied.

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.UnauthorizedAccessException: Access to the path '......same as above....' is denied.

ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via <identity impersonate="true"/> , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.

To grant ASP.NET access to a file, right-click the file in Explorer, choose "Properties" and select the Security tab. Click "Add" to add the appropriate user or group. Highlight the ASP.NET account, and check the boxes for the desired access.

Source Error:

Line 35:   ' This gets executed for every action on this controller 
Line 36:   ViewData("READONLY") = IIf(SessionData.IsReadOnly, "Y", "N") 
Line 37:   MyBase.Execute(requestContext) 
Line 38:  End Sub 
Line 39: 

Source File: C:\Posfx\trunk\posfx\camonline\Controllers\ApplicationController.vb Line: 37

Stack Trace:

[UnauthorizedAccessException: Access to the path '\\cambridge-uat-d\NetworkShare\DealDocumentShare\201102\online\136-test file 2.pdf' is denied.] 
System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) +7716623 
System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +1162 
System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +66 
System.Web.HttpResponse.TransmitFile(String filename, Int64 offset, Int64 length) +134 
System.Web.HttpResponse.TransmitFile(String filename) +12 
System.Web.HttpResponseWrapper.TransmitFile(String filename) +11 
System.Web.Mvc.FilePathResult.WriteFile(HttpResponseBase response) +37 
System.Web.Mvc.FileResult.ExecuteResult(ControllerContext context) +268 
System.Web.Mvc.ControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +10 
System.Web.Mvc.<>c__DisplayClass11.<InvokeActionResultWithFilters>b__e() +20 
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +251 
System.Web.Mvc.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10() +19 
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +251 
System.Web.Mvc.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10() +19 
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +251 
System.Web.Mvc.<>c__DisplayClass13.<InvokeActionResultWithFilters>b__10() +19 
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +178 
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +399 
System.Web.Mvc.Controller.ExecuteCore() +126 
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +27 
Cambridge.Online.ApplicationController.Execute(RequestContext requestContext) in C:\Posfx\trunk\posfx\camonline\Controllers\ApplicationController.vb:37 
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +7 
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContextBase httpContext) +151 
System.Web.Mvc.MvcHandler.ProcessRequest(HttpContext httpContext) +57 
System.Web.Mvc.MvcHandler.System.Web.IHttpHandler.ProcessRequest(HttpContext httpContext) +7 
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +181 
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75 

Answer 1

我認爲錯誤信息比清楚，它甚至告訴你該怎麼做，這是罕見的。您的網站在特權帳戶下運行。根據您使用的IIS版本，此帳戶可能會有所不同。因此，您應考慮授予對此帳戶的讀取訪問權限給您嘗試訪問的遠程文件夾，根據您獲得的例外情況，該帳戶是\servername\folder1\folder2\folder3\foder4。

您在說您已添加模擬，但模擬僅適用於本地資源。在你的情況下，似乎你正試圖訪問遠程服務器（遠程共享）。在這種情況下，您需要授權而不是冒充。因此，您可以將您的網站配置爲在可以讀取此遠程共享的域帳戶下運行。