===================================
参考
===================================
https://chrissainty.com/avoiding-accesstokennotavailableexception-when-using-blazor-webassembly-hosted-template-with-individual-user-accounts/
https://www.puresourcecode.com/dotnet/blazor/blazor-using-httpclient-with-authentication/
https://code-maze.com/using-access-token-with-blazor-webassembly-httpclient/#accessing-protected-resources
===================================
开放的 Rest api 服务
===================================
Online REST API for Testing and Prototyping https://gorest.co.in/
https://www.onlinetool.in/fake-rest-api
一些简单的api网站 https://mixedanalytics.com/blog/list-actually-free-open-no-auth-needed-apis/