.net core项目部署到iis，托管设置了无托管，访问swagger还是404；

排查原因为代码里配置了

 if (env.IsDevelopment())
    {
          app.UseSwagger();
          app.UseSwaggerUI();
     }

只有开发环境才显示swagger;

解决办法：

1.去除这个if判断，重新发布即可；

2.或者webconfig里配置为开发环境：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\MiMaDao.SCRM.Host.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="inprocess" >
 <environmentVariables>
            <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />
        </environmentVariables>
      </aspNetCore>
    </system.webServer>
  </location>
</configuration>

 <environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Development" />