本文介绍了ASP.NET Core 2.0中间件-访问配置设置的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在asp核心Web API中间件中,是否可以访问中间件中的配置?有人可以指导我如何做到吗?
In a asp core web api middleware, is it possible to access the configuration inside the middleware? Can someone guide me how this is done?
推荐答案在middle-ware中,您可以访问设置.为此,您需要在middle-ware构造函数中获取IOptions<AppSettings>.请参阅以下示例.
In a middle-ware you can access settings. To achieve this, you need to get IOptions<AppSettings> in the middle-ware constructor. See following sample.
public static class HelloWorldMiddlewareExtensions { public static IApplicationBuilder UseHelloWorld( this IApplicationBuilder builder) { return builder.UseMiddleware<HelloWorldMiddleware>(); } } public class HelloWorldMiddleware { private readonly RequestDelegate _next; private readonly AppSettings _settings; public HelloWorldMiddleware( RequestDelegate next, IOptions<AppSettings> options) { _next = next; _settings = options.Value; } public async Task Invoke(HttpContext context) { await context.Response.WriteAsync($"PropA: {_settings.PropA}"); } } public class AppSettings { public string PropA { get; set; } }有关更多信息,请参见此处.
For more information see here.
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ASP.NET Core 2.0中间件
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