C# .NET5.0 launchSettings.json

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{   "$schema": "http://json.schemastore.org/launchsettings.json",   "iisSettings": {     "windowsAuthentication": false,     "anonymousAuthentication": true,     "iisExpress": {       "applicationUrl": "http://localhost:32462",       "sslPort": 44348     }   },   "profiles": {     "IIS Express": {       "commandName": "IISExpress",       "launchBrowser": true,       "launchUrl": "swagger",       "environmentVariables": {         "ASPNETCORE_ENVIRONMENT": "Development"       }     },     "WebApplication1": {       "commandName": "Project",       "dotnetRunMessages": "true",       "launchBrowser": true,       "launchUrl": "swagger",       "applicationUrl": "https://localhost:5001;http://localhost:5000",       "environmentVariables": {         "ASPNETCORE_ENVIRONMENT": "Development"       }     }   } }

ASPNETCORE_ENVIRONMENT--环境配置方式，默认为开发环境
ASPNETCORE_ENVIRONMENT常见方式三种，也可进行自定义，例如Demo方式...

//env.IsDevelopment 开发环境
//env.IsProduction 生成环境
//env.IsStaging 预览
//env.IsEnvironment（demo） 可理解为自定义方式

"ASPNETCORE_ENVIRONMENT": "Development"
注：默认启动Startup.cs中
public void ConfigureServices(IServiceCollection services)

如果将"ASPNETCORE_ENVIRONMENT": "Demo"
则启动——约定方式哦
public void ConfigureDemoServices(IServiceCollection services)

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<br>如下所示：

 注：如果找不到对应的ConfigureDemoServices，则启动ConfigureServices