摘要：1：定义用来实现的接口 public interface IComputerBuilder { void createCpu(); void createDisplayScrenn(); void createMemory(); } } 2：实现接口 public class LowComputer 阅读全文

摘要：app.Map("/second", _app => { _app.Use(async (context,next)=>{ await context.Response.WriteAsync("second middleware\r\n"); await next.Invoke(); }); }); 阅读全文

摘要：app.Use(async (context,next) => { await context.Response.WriteAsync("first middleware"); await next.Invoke(); }); 阅读全文