将配置选项从 netcoreapp1.1 移植到 netcoreapp2.0

Question

在netcoreapp1.1中，我的配置是在Startup中定义的，它具有：

public Startup(IHostingEnvironment env)
{
_configuration = 
new ConfigurationBuilder()
.SetBasePath(env.ContentRootPath)
.AddJsonFile("appsettings.json")
.Build();
}
private readonly IConfigurationRoot _configuration;
public IServiceProvider ConfigureServices(IServiceCollection services)
{
services.AddOptions();
services.Configure<Stuff1>(_configuration.GetSection("stuff1"));
services.Configure<Stuff2>(_configuration.GetSection("stuff2"));
services.AddDbContext<Context>(options =>
options.UseSqlite(_configuration.GetConnectionString("DefaultConnection")),    
);
}

但是在netcoreapp2.0中，配置是在Program中单独定义的。所以Startup现在只有这个：

public IServiceProvider ConfigureServices(IServiceCollection services)
{
var configuration = //???   how do I get this?
services.AddOptions();
services.Configure<Stuff1>(configuration.GetSection("stuff1"));
services.Configure<Stuff2>(configuration.GetSection("stuff2"));
services.AddDbContext<Context>(options =>
options.UseSqlite(configuration.GetConnectionString("DefaultConnection")),    
);
}

那么我如何在ConfigureServices()中获取IConfigurationRoot，以便我可以设置我的强类型Stuff1和Stuff2选项，以及其他内容，如连接字符串？

Answer 1

事实证明，它会自动注册到容器中，并且像这样可用：

public Startup(IConfiguration configuration)
{
_configuration = configuration;
}
public readonly IConfiguration _configuration;

这对我有用，但我认为也可以使用IConfigurationRoot.