当我的 ASP.Net 网站不允许执行我的 Web 托管服务的安全策略定义的某些操作时，我该怎么办？

Question

我用 C# 编码的 asp.net 站点在本地系统上运行良好，但是当我通过 plesk 将文件上传到 httpdocs 文件夹时，出现以下错误：

Server Error in '/' Application.
________________________________________
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately. 

Compiler Error Message: CS0246: The type or namespace name 'Xyz' could not be found (are you missing a using directive or an assembly reference?)

Source Error:


Line 1:  <%@ Application Language="C#" %>
Line 2:  <%@ Import Namespace="xyz" %>
Line 3:  <%@ Import Namespace="System.Web.Optimization" %>
Line 4:  <%@ Import Namespace="System.Web.Routing" %>

Source File: g:\PleskVhosts\xyz.com\httpdocs\Xyz\Global.asax    Line: 2 

Show Detailed Compiler Output:


C:\Windows\SysWOW64\inetsrv> "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /t:library /utf8output /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_32\System.Web\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.WebPages.Deployment\v4.0_2.0.0.0__31bf3856ad364e35\System.Web.WebPages.Deployment.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.Services\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Web.Services.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_32\System.EnterpriseServices\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.EnterpriseServices.dll" /R:"C:\Windows\Microsoft.NET\Framework\v4.0.30319\mscorlib.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.Extensions\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.Extensions.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.WorkflowServices\v4.0_4.0.0.0__31bf3856ad364e35\System.WorkflowServices.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Drawing\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel\v4.0_4.0.0.0__b77a5c561934e089\System.ServiceModel.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Web\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Web.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.DynamicData\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.DynamicData.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Activities\v4.0_4.0.0.0__31bf3856ad364e35\System.Activities.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.ApplicationServices\v4.0_4.0.0.0__31bf3856ad364e35\System.Web.ApplicationServices.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_32\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.IdentityModel\v4.0_4.0.0.0__b77a5c561934e089\System.IdentityModel.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Data.DataSetExtensions\v4.0_4.0.0.0__b77a5c561934e089\System.Data.DataSetExtensions.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Activation\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Activation.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ComponentModel.DataAnnotations\v4.0_4.0.0.0__31bf3856ad364e35\System.ComponentModel.DataAnnotations.dll" /R:"C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Activities\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Activities.dll" /out:"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\ba70df64\8ad7fdd9\App_global.asax.8gpjfmvi.dll" /debug- /optimize+ /w:4 /nowarn:1659;1699;1701;612;618 /warnaserror-  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\ba70df64\8ad7fdd9\App_global.asax.8gpjfmvi.0.cs" "C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\root\ba70df64\8ad7fdd9\App_global.asax.8gpjfmvi.1.cs"


Microsoft (R) Visual C# Compiler version 4.0.30319.17929

for Microsoft (R) .NET Framework 4.5
Copyright (C) Microsoft Corporation. All rights reserved.

g:\PleskVhosts\xyz.com\httpdocs\Xyz\Global.asax(2,11): error CS0246: The type or namespace name 'Xyz' could not be found (are you missing a using directive or an assembly reference?)
g:\PleskVhosts\xyz.com\httpdocs\Xyz\Global.asax(3,22): error CS0234: The type or namespace name 'Optimization' does not exist in the namespace 'System.Web' (are you missing an assembly reference?)
g:\PleskVhosts\xyz.com\httpdocs\Xyz\Web.config(24,21): error CS0234: The type or namespace name 'AspNet' does not exist in the namespace 'Microsoft' (are you missing an assembly reference?)


________________________________________
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18056

任何帮助都会很棒。

## 新错误

****“/”应用程序中的服务器错误。

Security Exception

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 Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.ReflectionPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

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: 


[SecurityException: Request for the permission of type 'System.Security.Permissions.ReflectionPermission, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.]
   System.Delegate.DelegateConstruct(Object target, IntPtr slot) +0
   Owin.Loader.DefaultLoader..ctor(Func`3 next, Func`2 activator, IEnumerable`1 referencedAssemblies) +69
   Microsoft.Owin.Host.SystemWeb.OwinBuilder.GetAppStartup() +65
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.InitializeBlueprint() +28
   System.Threading.LazyInitializer.EnsureInitializedCore(T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory) +115
   Microsoft.Owin.Host.SystemWeb.OwinHttpModule.Init(HttpApplication context) +106
   System.Web.HttpApplication.RegisterEventSubscriptionsWithIIS(IntPtr appContext, HttpContext context, MethodInfo[] handlers) +418
   System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +172
   System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +336
   System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext) +296

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18056****

Answer 1

遇到同样的问题，可以使用web.config. 将level="Full"级别添加到元素中trust，如下所示：

<system.web>
   ...
   <trust level="Full" />
   ...
</system.web>