ASP NET Core Net mezhangwenqing org NET Framework
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ASP. NET Core�用生命周期指北 �文清 . Net西安社区 me@zhangwenqing. org
概念和体系:. NET Framework, . NET Core, ASP. NET Core �片出自 2016年. NET Standard介� https: //blogs. msdn. microsoft. com/dotnet/2016/09/26/introducing-net-standard/
Runtime, SDK, Package • Runtime(运行�),. NET Core Runtime • Core. CLR,包含JIT(Just In Time��器), ILAsm(. NET IL中��言��程序), ILDasm(. NET IL中��言反��程序), Test. Host(corehost. exe��控制台�行器), mscorelib,一 系列原生�型和内部�型(包括. NET GC) • Core. FX,System. Collections,System. IO,System. Xml等等其他�件 • SDK,. NET Core SDK • • CLI,默�启�器,脚手架 具等 Roslyn,C#和VB. NET��器和�言支持 SKD,MSBuild任�支持等其他 VS必要�件 Fsc,F#�言支持 • Package • nuget (v 3 json) • ASP. NET Core所有的Assembly以nuget Package形式分�
依�注入 (Dependency Injection) • • ASP. NET Core中的依�称� Service 通�抽象接口来解耦�� 默�通�构造函数注入 提供内置Services • https: //docs. microsoft. com/en-us/aspnet/core/fundamentals/dependencyinjection? view=aspnetcore-2. 1#framework-provided-services • 提供三种Service生命周期:短�( Transient,每次�建一个�例),作用域内( Scoped,每�求�建一个�例),�例( Singleton) • 支持三方Service Container,例如Autofac • 在Configure. Service中返回 IService. Provider
中�件 (Middleware)的三种写法 app. Use( (context, next) => { next(); }); app. Map(“/endpoint”, (app) => { app. Run( (context) => { //TODO }); app. Run( (context)=> { /* TODO */ }); public class Conventional. Middleware { private readonly Request. Delegate _next; public Conventional. Middleware (Request. Delegate next) { _next = next; } public async Task Invoke. Async (Http. Context context) { //TODO: await _next(context); } } app. Use. Middleware<Conventional. Middleware>(); public class Factory. Activated. Middleware : IMiddleware { public async Task Invoke. Async (Http. Context context, Request. Delegate next) { //TODO: await next(context); } } // register services. Add. Transient<Factory. Activated. Middle ware>(); // apply middleware app. Use. Middleware<Factory. Activated. Middlewar e>();
上下文(context) - 指引方向的北极星 • Middleware中直接使用(参数�入) • 通�注入依� IHttp. Context. Accessor • 前提:services. Add. Http. Context. Accessor();
MVC全景� Dependency Injection request Model binding Router response Model Controller Format response View (Razor) View. Component
安全退出(Graceful shutdown) Microsoft. Asp. Net. Core. Hosting. IApplication. Lifetime
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