ASP.. NET 5 -在Startup.Configure中访问依赖容器

本文关键字：访问 依赖 Configure Startup NET ASP | 更新日期: 2023-09-27 18:07:14

我想访问我的Options实例，该实例在ConfigureServices中作为单例添加。下面是我的代码:

public class Startup
{
    private IConfiguration Configuration { get; set; }
    public Startup(IHostingEnvironment env, IApplicationEnvironment appEnv)
    {
        var builder = new ConfigurationBuilder(appEnv.ApplicationBasePath)
            .AddJsonFile("config.json")
            .AddEnvironmentVariables();
        Configuration = builder.Build();
    }
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddSingleton((serviceProvider) => ConfigurationBinder.Bind<Options>(Configuration));
    }
    public void Configure(IApplicationBuilder app)
    {
        var root = ""; // I want to access my Options instance to get root from it
        var fileServerOptions = new FileServerOptions()
        {
            FileProvider = new PhysicalFileProvider(root)
        };
        app.UseFileServer(fileServerOptions);
    }
}

我的问题是如何在Configure方法中访问Options的实例来设置根变量

ASP.. NET 5 -在Startup.Configure中访问依赖容器

根据startup.cs的Configure方法中如何使用ConfigurationBinder的建议，运行时可以直接将选项注入Configure方法:

public void Configure(IApplicationBuilder app, Options options)
{
    // do something with options
}

根据Joe Audette的评论，这是解决方案:

var options = app.ApplicationServices.GetService<Options>();
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