如何在asp.net核心中编写中间件作为自定义路由器？

我想转换这段代码：

var trackPackageRouteHandler = new RouteHandler(context => { var routeValues = context.GetRouteData().Values; return context.Response.WriteAsync( $"Hello! Route values: {string.Join(", ", routeValues)}"); }); var routeBuilder = new RouteBuilder(app, trackPackageRouteHandler); routeBuilder.MapRoute( "Track Package Route", "package/{operation:regex(^track|create|detonate$)}/{id:int}"); routeBuilder.MapGet("hello/{name}", context => { var name = context.GetRouteValue("name"); // This is the route handler when HTTP GET "hello/" matches // To match HTTP GET "hello//, // use routeBuilder.MapGet("hello/{*name}" return context.Response.WriteAsync($"Hi, {name}!"); }); var routes = routeBuilder.Build(); app.UseRouter(routes); 

进入这个：

 app.UseHelloRouter(); 

但我不想使用除路由之外的任何服务

Answer 1

您可以创建一个扩展方法来封装路由器配置

 public static class HelloRouterExtensions { public static IApplicationBuilder UseHelloRouter(this IApplicationBuilder app) { var trackPackageRouteHandler = new RouteHandler(context => { var routeValues = context.GetRouteData().Values; return context.Response.WriteAsync( $"Hello! Route values: {string.Join(", ", routeValues)}"); }); var routeBuilder = new RouteBuilder(app, trackPackageRouteHandler); routeBuilder.MapRoute( "Track Package Route", "package/{operation:regex(^track|create|detonate$)}/{id:int}"); routeBuilder.MapGet("hello/{name}", context => { var name = context.GetRouteValue("name"); // This is the route handler when HTTP GET "hello/" matches // To match HTTP GET "hello//, // use routeBuilder.MapGet("hello/{*name}" return context.Response.WriteAsync($"Hi, {name}!"); }); var routes = routeBuilder.Build(); app.UseRouter(routes); return app; } } 

这基本上改变了这种配置

 public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory) { var trackPackageRouteHandler = new RouteHandler(context => { var routeValues = context.GetRouteData().Values; return context.Response.WriteAsync( $"Hello! Route values: {string.Join(", ", routeValues)}"); }); var routeBuilder = new RouteBuilder(app, trackPackageRouteHandler); routeBuilder.MapRoute( "Track Package Route", "package/{operation:regex(^track|create|detonate$)}/{id:int}"); routeBuilder.MapGet("hello/{name}", context => { var name = context.GetRouteValue("name"); // This is the route handler when HTTP GET "hello/" matches // To match HTTP GET "hello//, // use routeBuilder.MapGet("hello/{*name}" return context.Response.WriteAsync($"Hi, {name}!"); }); var routes = routeBuilder.Build(); app.UseRouter(routes); } 

进入这个配置。

 public void Configure(IApplicationBuilder app, ILoggerFactory loggerFactory) { app.UseHelloRouter(); }