Question

我在Asp.net mvc框架上开发了门户网站。我曾经在godaddy主机上托管过这个网站。我在整合第三方dll时遇到了很大的问题，即NPOI（excel writer dll）。显然跟随错误。

安全例外

**Description**: *The application attempted to perform an operation not allowed by the security policy.  To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.*

**Exception Detail*s**:* System.Security.SecurityException: That assembly does not allow partially trusted callers.

   **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.*

堆栈追踪：

[SecurityException: That assembly does not allow partially trusted callers.]
   ETravel.Web.Modules.Travel.Controllers.Admin.ReportController.TravelTaxList() in ReportController.cs:853
   lambda_method(ExecutionScope , ControllerBase , Object[] ) +39
   System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
   System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +178
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +24
   System.Web.Mvc.<>c__DisplayClassa.<InvokeActionMethodWithFilters>b__7() +52
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +254
   System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +254
   System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +254
   System.Web.Mvc.<>c__DisplayClassc.<InvokeActionMethodWithFilters>b__9() +19
   System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +192
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +399
   System.Web.Mvc.Controller.ExecuteCore() +126
   System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +27
   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

为了解决这个问题，我在web.config文件中添加了这段代码。

<compilation debug="true">
   <assemblies>
.....................    .............
        <add assembly ="NPOI, Version=1.2.1.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1"/>
        <add assembly="NPOI.POIFS, Version=1.2.1.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1"/>
        <add assembly ="NPOI.HPSF, Version=1.2.1.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1"/>
        <add assembly ="NPOI.Util, Version=1.2.1.0, Culture=neutral, PublicKeyToken=0df73ec7942b34e1"/>
   </assemblies>
  </compilation>

和[assembly：AllowPartiallyTrustedCallers（）]到Assemblyinfo.cs。但是没有工作。主要问题是什么，解决方案是什么？请帮助我......

Answer 1

不，这是需要允许部分信任的呼叫者的NPOI。它可能正在做一些无法在中等信任环境中工作的东西。

看看NPOI website到去年年底它似乎是updated to run in medium trust environments，但那是在1.2.1发布之后。您应该尝试使用最新版本1.2.3 beta，以查看该更新是否已将其更新，以及是否能为您解决此问题。

NPOI DLL（第三方excel编写器DLL）.... System.Security.SecurityException：该程序集不允许部分信任的调用者

1 个答案: