.net core 多语言支持——Troubleshoot ASP.NET Core Localization https://docs.microsoft.com/en-us/aspnet/core/fundamentals/troubleshoot-aspnet-core-localization?view=aspnetcore-3.1 In this article Localization configuration issues Resource file naming issues Missing resources Resources & Class Libraries issues CustomRequestCultureProvider doesn't work as expected Root Namespace issues Resources & Build Action