public static async Task main() { Context c = new Context(); c.SetRequest("来自cx的请求"); ApplicationCore application = new ApplicationCore(); //第一个中间件 application.Use(next => async context => { await context.ResponseAsync("来自第1个中间件Start"); await next(context); await context.ResponseAsync("来自第1个中间件End"); }) .Use(next => async context => { await context.ResponseAsync("来自第2个中间件Start"); await next(context); await context.ResponseAsync("来自第2个中间件End"); }) .Use(next => async context => { await context.ResponseAsync("来自第3个中间件Start"); await next(context); await context.ResponseAsync("来自第3个中间件End"); }) .Use(async(context, next) => { await context.ResponseAsync("来自第4个中间件Start"); await next(); await context.ResponseAsync("来自第4个中间件End"); }) .Use(async(context, next) => { await context.ResponseAsync("来自第5个中间件Start"); //await next(); await context.ResponseAsync("来自第5个中间件End"); }); RequestDelegate rd = application.Build(); await rd(c); }