在服务 .net core 中获取 appsettings.json 值 [英] Get appsettings.json values in service .net core

问题描述

我有 appsettings.json 文件，我想在其中声明文件的路径.

I have appsettings.json file where I want to declare paths to files.

路径":{"文件": "C:/file.pdf"}

我想在我的服务中访问这个值，我尝试这样做:

I want to access this value in my service, I try it to do like this:

public class ValueService: IValueService
{
    IConfiguration Configuration { get; set; }

    public MapsService(IConfiguration configuration)
    {
        this.Configuration = configuration;
    }


    public string generateFile()
    {

           var path = Configuration["Paths:file"] ;
    }

}

但是我得到 var path

Startup.cs 文件声明了 appsettings.json，因为它从那里获取连接字符串.是否可以在 startup.cs 类之外访问这些值?

Startup.cs file has appsettings.json declared as it takes connection string from there. Is it possible to access these values outside startup.cs class?

推荐答案

您应该在 ConfigureServices 中注册配置:

You should register Configuration in ConfigureServices:

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();
    services.AddSingleton<IConfiguration>(Configuration);
}

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