Angular 依赖注入


Angular  依赖注入 和.NetCore 的对比:

Angular .Netcore Example
Injector ServiceProvider
  constructor(injector: Injector) {     this.localization = injector.get(LocalizationService);     this.permission = injector.get(PermissionCheckerService);     this.feature = injector.get(FeatureCheckerService);     this.notify = injector.get(NotifyService);     this.setting = injector.get(SettingService);     this.message = injector.get(MessageService);     this.multiTenancy = injector.get(AbpMultiTenancyService);     this.appSession = injector.get(AppSessionService);     this.elementRef = injector.get(ElementRef);     this.modalHelper = injector.get(ModalHelper);   }
@Injectable

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类上修饰

@Injectable() export class  AppSessionService {   private _user: UserLoginInfoDto;   private _tenant: TenantLoginInfoDto;   private _application: ApplicationInfoDto; 。。。 }
@Inject

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参数上修饰

   constructor(@Inject(HttpClient) http: HttpClient, @Optional() @Inject(API_BASE_URL) baseUrl?: string) {         this.http = http;         this.baseUrl = baseUrl ? baseUrl : "";     }

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