通过命令行在开发中运行.net核心应用程序 [英] run .net core application in development from the command line

问题描述

我知道我可以在Visual Studio或Visual Studio Code中配置一些设置，以在开发模式下启动asp .net核心应用程序.但是我对所有构建工具都有着可怕的经验，到目前为止，从命令行运行是唯一对我有用的工具.

I know I can configure some settings in Visual Studio or Visual Studio Code to launch my asp .net core application in development mode. But I've had a horrible experience with all the build tools, and so far running from the command line is the only one working for me.

我在命令行中遇到的最大问题是使其在开发"模式下运行.据我了解，这只能通过在dotnet watch run之前键入set ASPNETCORE_ENVIRONMENT=Development或设置系统范围的环境变量来完成.必须有另一种方式，例如通过文件或其他方式.

The big problem I have with the command line is getting it to run in Development mode. If I understand, this can only be done by typing set ASPNETCORE_ENVIRONMENT=Development before dotnet watch run or by setting system wide environment variables. There's gotta be another way, like through a file or something.

如何从命令行在开发模式下运行，因此可以将其包含在Aurelia项目的package.json中?

How can I run in Development mode from the command line, so I can include this in say a package.json of an Aurelia project?

推荐答案

您可以将--environment参数与dotnet run一起使用以指定托管环境:

You may use --environment argument with dotnet run to specify hosting environment:

 dotnet run --environment "Development"

但是，只有在您修改主机构造以使用带有命令行参数作为配置源的配置后，此方法才有效.

But this will work only after you modify host building to use configuration with command line arguments as config source.

• 将依赖项添加到Microsoft.Extensions.Configuration.CommandLine包

• 通过为ConfigurationBuilder添加AddCommandLine扩展方法，将基于参数的配置创建添加到main方法:

• add dependency to Microsoft.Extensions.Configuration.CommandLine package

• add to main method the config creation based on arguments by adding AddCommandLine extension method for ConfigurationBuilder :

var config = new ConfigurationBuilder()  
   .AddCommandLine(args)
   .Build();

通过在主机设置过程中添加.UseConfiguration(config)步骤来使用配置.

use configuration by adding .UseConfiguration(config) step during host setup.

var host = new WebHostBuilder()  
   .UseConfiguration(config)
   .UseKestrel()
   .UseContentRoot(Directory.GetCurrentDirectory())
   .UseIISIntegration()
   .UseStartup<Startup>()
   .Build();

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