asp.net - IIS 10.0 详细错误 : mimeMap

Question

你好，我是使用 IIS 和 Visual Studio 的新手，但我已经设法在 IIS 上启动了一个网站，但是当我尝试启动这个网站时，我在整个页面上遇到了这个错误:

错误信息:

Cannot add duplicate collection entry of type 'mimeMap' with unique key attribute 'fileExtension' set to '.mp4'

有一个部分显示为 Config Error:所以这是我的 web.config 文件:

<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="DetailLogging" value="True"/>
<add key="LoggingConfigFile" value="log4net.config"/>
<add key="DatabaseConnectionString" value="Integrated Security=True; MultipleActiveResultSets=True; Data source=.\SQLEXPRESS; Initial Catalog=WebEvaluation" />

<add key="Email" value="***********************"/> 
<add key="SupportEmailID" value="*************************"/> 
<add key="ForgotPasswordEmailSubject" value="Butterfly Scheme e-Certification Admin Console - Password Request"/>
<add key="WelcomeMailSubject" value="Butterfly Scheme e-Certification Admin Console"/>
<add key="PasswordChangedMailSubject" value="Butterfly Scheme e-Certification Admin Console - Password Changed"/>
<add key="PasscodeDeleteMailSubject" value="Passcode delete notification - "/>
<add key="Host" value="***********"/>
<add key="PortNo" value="25"/> 
<add key="Password" value="***********"/>
<add key="SiteURL" value="***********************************"/>
<add key="RecordsPerPage" value="20" />
<add key="PasscodeCreateMailSubject" value="Butterfly Scheme e-Certification Passcode List created for : "/>    
<add key ="XlsConnectionString" value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source={0}; Extended Properties='Excel 8.0;IMEX=1'"/>
<add key ="XlsxConnectionString" value="Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0}; Extended Properties='Excel 8.0;'"/>   
</appSettings>

<system.web>
<compilation debug="true" targetFramework="4.0">
  <assemblies>
    <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=******************"/>
    <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=******************"/>
    <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
  </assemblies>
</compilation>
<httpRuntime requestValidationMode="2.0" maxRequestLength="2097151" 
executionTimeout="900"/>
<sessionState mode="InProc" timeout="20"/>
</system.web> 

<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<staticContent>
  <mimeMap fileExtension=".mp4" mimeType="video/mp4"/>
  <mimeMap fileExtension=".m4v" mimeType="video/m4v"/>
  <mimeMap fileExtension=".3gp" mimeType="video/3gpp"/>
</staticContent>
<security>
  <requestFiltering>
    <requestLimits maxAllowedContentLength="2147482624"/>
  </requestFiltering>
</security>
</system.webServer>
</configuration>

Answer 1

你可以添加这样的东西:

<remove fileExtension=".mp4" />

或者，由于 MP4 mime 类型似乎已经存在于根配置文件中，只需省略整行:

<mimeMap fileExtension=".mp4" mimeType="video/mp4"/>

如果你真的想确保你似乎需要的扩展存在，这可以替代 staticContent 标签:

<staticContent>
    <remove fileExtension=".mp4" />
    <remove fileExtension=".m4v" />
    <remove fileExtension=".3gp" />

    <mimeMap fileExtension=".mp4" mimeType="video/mp4"/>
    <mimeMap fileExtension=".m4v" mimeType="video/m4v"/>
    <mimeMap fileExtension=".3gp" mimeType="video/3gpp"/>
</staticContent>