IISExpress 7.5出現內部服務器錯誤，而IIS 7.5起作用

Question

我的web.config中有以下<handlers />部分，用於為各種文件擴展名注冊ActiveReports 6處理程序：

<handlers accessPolicy="Read, Execute, Script">

  <add name="ActiveReportsRpxHandler" path="*.rpx" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.RpxHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
  <add name="ActiveReportsWebCacheHandler" path="*.ArCacheItem" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.WebCacheAccessHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
  <add name="ActiveReportsCompiledReportHandler" path="*.ActiveReport" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.CompiledReportHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />

</handlers>

當將應用程序池配置為在集成管道模式下使用.NET 4.0時，在Windows Server 2008 R2下的IIS 7.5下，此方法可以正常工作。

---

如果我嘗試在IIS Express 7.5下使用此確切的web.config運行相同的應用程序，則會收到以下令人困惑的錯誤消息：

**HTTP Error 500.19 - Internal Server Error**

**Config Error**    Cannot add duplicate collection entry of type 'add' with unique key attribute 'name' set to 'ActiveReportsRpxHandler'

該錯誤消息沒有多大意義，尤其是如果我將唯一的“ name”屬性更改為其他內容，並且錯誤消息相應地進行了調整。 （不太可能在其他地方復制ActiveReportsRpxHandler6161616161 ）

此IISExpress實例遵循以下applicationhost.config：

<site name="xxxxxxx" id="2">
    <application path="/" applicationPool="Clr4IntegratedAppPool">
        <virtualDirectory path="/" physicalPath="C:\Users\xxxxxxx\Documents\Visual Studio 2010\Projects\xxxxxxx\xxxxxxx" />
    </application>
    <application path="/AIMS" applicationPool="Clr4IntegratedAppPool">
        <virtualDirectory path="/" physicalPath="C:\Users\xxxxxxx\Documents\Visual Studio 2010\Projects\xxxxxxx\xxxxxxx" />
    </application>
    <bindings>
        <binding protocol="http" bindingInformation="*:32150:localhost" />
    </bindings>
</site>

有什么線索可以解決IIS Express 7.5嗎？ 還是我在這里做一些愚蠢的事情？

Answer 1

也許處理程序已在配置文件鏈中的某個位置注冊。 在http://msdn.microsoft.com/zh-cn/library/ms178685(v=vs.100).aspx上查看有關它的詳細信息。 或者，您可以嘗試

<handlers accessPolicy="Read, Execute, Script">
  <remove name="ActiveReportsRpxHandler"/> 
  <add name="ActiveReportsRpxHandler" path="*.rpx" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.RpxHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
  <add name="ActiveReportsWebCacheHandler" path="*.ArCacheItem" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.WebCacheAccessHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />
  <add name="ActiveReportsCompiledReportHandler" path="*.ActiveReport" verb="*" type="DataDynamics.ActiveReports.Web.Handlers.CompiledReportHandler, ActiveReports.Web, Version=6.0.1797.0, Culture=neutral, PublicKeyToken=cc4967777c49a3ff" />

</handlers>