关键aspNetCore processPath 这一行，耗费了一天

<?xml version="1.0" encoding="UTF-8"?>

<configuration>

  <location path="." inheritInChildApplications="false">

    <system.webServer>

      <modules runAllManagedModulesForAllRequests="true"/>

      <aspNetCore processPath=".\Web2.exe" stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout" hostingModel="InProcess" />

      <handlers>

        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />

        <remove name="ExtensionlessUrlHandler-Integrated-4.0" />

<remove name="OPTIONSVerbHandler" />

<remove name="TRACEVerbHandler" />

<!--add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0"/-->

<add name="all" path="*" verb="*" modules="IsapiModule" scriptProcessor="C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="None" preCondition="classicMode,runtimeVersionv4.0,bitness64" />

      </handlers>

    </system.webServer>

  </location>

</configuration>