访问asp文件时404

<!-- 在web.config文件中添加以下配置 -->
<configuration>
  <system.webServer>
    <handlers>
      <add name="ASPClassic" path="*.asp" verb="GET,HEAD,POST" modules="IsapiModule" scriptProcessor="%windir%\system32\inetsrv\asp.dll" resourceType="Unspecified" requireAccess="Script" preCondition="classicMode,runtimeVersionv4.0" />
    </handlers>
    <defaultDocument>
      <files>
        <add value="index.asp" />
      </files>
    </defaultDocument>
  </system.webServer>
</configuration>

<!-- 在web.config中添加重写规则 -->
<configuration>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="Rewrite to ASP" stopProcessing="true">
          <match url="^([^\.]+)$" />
          <conditions>
            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
          </conditions>
          <action type="Rewrite" url="{R:1}.asp" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>