有没有其他人在单声道ASP.NET上的xsp上运行此错误？我认为这与缓存有关，但是在Web.config文件中没有提到缓存，所以我没有故意改变任何东西。
这只会在正常运行几天后发生，并在服务器重新启动时自行修复。
Status Code: InternalServerError
Server Error in '/' Application
The given key was not present in the dictionary.
Description: HTTP 500. Error processing request.
Stack Trace:
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2[System.Collections.Generic.LinkedListNode`1[System.Web.Caching.CacheItem],System.String].get_Item (System.Collections.Generic.LinkedListNode`1 key) [0x00000] in <filename unknown>:0
at System.Web.Caching.CacheItemLRU.EvictIfNecessary () [0x00000] in <filename unknown>:0
at System.Web.Caching.Cache.SetItemTimeout (System.Web.Caching.CacheItem ci, DateTime absoluteExpiration, TimeSpan slidingExpiration, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback, System.Web.Caching.CacheItemUpdateCallback onUpdateCallback, System.String key, Boolean doLock) [0x00000] in <filename unknown>:0
at System.Web.Caching.Cache.Insert (System.String key, System.Object value, System.Web.Caching.CacheDependency dependencies, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback, System.Web.Caching.CacheItemUpdateCallback onUpdateCallback, Boolean doLock) [0x00000] in <filename unknown>:0
at System.Web.Caching.Cache.Insert (System.String key, System.Object value, System.Web.Caching.CacheDependency dependencies, DateTime absoluteExpiration, TimeSpan slidingExpiration, CacheItemPriority priority, System.Web.Caching.CacheItemRemovedCallback onRemoveCallback) [0x00000] in <filename unknown>:0
at System.Web.SessionState.SessionInProcHandler.InsertSessionItem (System.Web.SessionState.InProcSessionItem item, Int32 timeout, System.String id) [0x00000] in <filename unknown>:0
at System.Web.SessionState.SessionInProcHandler.SetAndReleaseItemExclusive (System.Web.HttpContext context, System.String id, System.Web.SessionState.SessionStateStoreData item, System.Object lockId, Boolean newItem) [0x00000] in <filename unknown>:0
Version information: Mono Runtime Version: 2.10.8.1 (Debian 2.10.8.1-1ubuntu2.2); ASP.NET Version: 4.0.30319.1
这是项目的web.config文件：
<?xml version="1.0"?>
<!--
The settings that can be used in this file are documented at
http://www.mono-project.com/Config_system.web and
http://msdn2.microsoft.com/en-us/library/b5ysx397.aspx
-->
<configuration>
<configSections>
<sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />
</sectionGroup>
</sectionGroup>
</configSections>
<system.web>
<!--
Set compilation debug="true" to insert debugging
symbols into the compiled page. Because this
affects performance, set this value to true only
during development.
-->
<compilation defaultLanguage="C#" debug="false">
<assemblies>
<add assembly="System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.Web.DynamicData, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<add assembly="System.Xml.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</assemblies>
</compilation>
<customErrors mode="Off">
</customErrors>
<pages>
<controls>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</controls>
<namespaces>
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Routing" />
<add namespace="System.Linq" />
<add namespace="System.Collections.Generic" />
</namespaces>
</pages>
<authorization>
<allow users="*" />
</authorization>
<httpHandlers>
<remove verb="*" path="*.asmx" />
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false" />
<add verb="*" path="*.mvc" validate="false" type="System.Web.Mvc.MvcHttpHandler, System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add name="UrlRoutingModule" type="System.Web.Routing.UrlRoutingModule, System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</httpModules>
<trace enabled="false" localOnly="true" pageOutput="false" requestLimit="10" traceMode="SortByTime" />
<globalization requestEncoding="utf-8" responseEncoding="utf-8" />
</system.web>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v4.0" />
<providerOption name="WarnAsError" value="false" />
</compiler>
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
<providerOption name="CompilerVersion" value="v4.0" />
<providerOption name="OptionInfer" value="true" />
<providerOption name="WarnAsError" value="false" />
</compiler>
</compilers>
</system.codedom>
<system.web.extensions />
</configuration>
这是具有例外的控制器：
public class APIController : Controller
{
public string Index()
{
return "Hello";
}
}