如何在本地创建IConfiguration实例？ [英] How can I create an instance of IConfiguration locally?

问题描述

我想问一下如何创建ASP.NET Core配置实例，该实例与我在Controller的构造函数中需要它时所创建的实例相同，该构造函数知道 appsettings.json 文件

I'd want to ask how to create an instance of ASP.NET Core's Configuration, the same that's being created when I require it in Controller's constructor which knows about the appsettings.json file

像 _config = ActivatorUtilities.CreateInstance< IConfiguration>（null）;

System.InvalidOperationException：'找不到类型为'Microsoft.Extensions.Configuration.IConfiguration'的合适的构造函数。确保类型是具体的，并且为公共构造函数的所有参数注册了服务。'

System.InvalidOperationException: 'A suitable constructor for type 'Microsoft.Extensions.Configuration.IConfiguration' could not be located. Ensure the type is concrete and services are registered for all parameters of a public constructor.'

这很有意义，因为它是接口，但是在Controller的Constructor案例中如何工作？以及如何创建该实例？

It makes sense because it is interface, but how it does work in Controller's Constructor case? and how can I create an instance of that?

我正在使用MS DI

I'm using MS DI

谢谢

推荐答案

您可以创建本地配置实例，如下所示。

You can create a local instance of configuration as shown below.

IConfigurationRoot configuration = new ConfigurationBuilder()
            .SetBasePath([PATH_WHERE_appsettings.json_RESIDES])
            .AddJsonFile("appsettings.json")
            .Build();

有关更多信息，请参见在ASP.NET Core中进行配置

For further information see Configuration in ASP.NET Core

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