1.選擇發布到文件夾
2.選擇core版本
3.安裝配置環境 dotnet-hosting-3.1.5-win.exe和windowsdesktop-runtime-3.1.5-win-x64.exe
runtime: https://dotnet.microsoft.com/download/
hosting: https://download.visualstudio.microsoft.com/download/pr/7c30d3a1-f519-4167-b850-b9c49bf2aa0e/dbfa957a76a41a1e1795f59d400d4ccd/dotnet-hosting-3.1.5-win.exe
4.IIS
確保模塊里面有core模塊
最后附上微軟官方教程
https://docs.microsoft.com/zh-cn/aspnet/core/host-and-deploy/iis/?view=aspnetcore-3.1