问题描述
我需要拦截对html组件模板的请求。 Angular版本是 4.3.5
。
I need to intercept request to the html component templates. Angular version is 4.3.5
.
我尝试通过实现拦截器来实现它,如《角度httpClient手册》( )
I tried to achieve it with implementing interceptors as described in angular httpClient manual (https://angular.io/guide/http) like that
interceptor.service.js
interceptor.service.js
import {Injectable} from '@angular/core';
import {HttpEvent, HttpInterceptor, HttpHandler, HttpRequest} from '@angular/common/http';
@Injectable()
export class AuthInterceptor implements HttpInterceptor {
constructor(private auth: AuthService) {}
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
// Get the auth header from the service.
const authHeader = this.auth.getAuthorizationHeader();
// Clone the request to add the new header.
const authReq = req.clone({headers: req.headers.set('Authorization', authHeader)});
// Pass on the cloned request instead of the original request.
return next.handle(authReq);
}
}
app.module.js
app.module.js
import {NgModule} from '@angular/core';
import {HTTP_INTERCEPTORS} from '@angular/common/http';
@NgModule({
providers: [{
provide: HTTP_INTERCEPTORS,
useClass: NoopInterceptor,
multi: true,
}],
})
export class AppModule {}
但它会拦截http请求来自我自己编写的服务和组件,但是它们不会拦截对由angular创建的html模板的请求。
but it intercepts http requests from services and components which i wrote by myself but doesn't intercept requests to html templates which are made by angular.
还有其他方法吗?
推荐答案
如果您可以访问 @ angular / compiler
,请尝试覆盖 ResourceLoader
:
If you can have access to @angular/compiler
then try to override ResourceLoader
:
main.ts
platformBrowserDynamic([{
provide: COMPILER_OPTIONS,
useValue: { providers: [{
provide: ResourceLoader,
useClass: CustomResourceLoader,
deps: []
}]
},
multi: true
}]).bootstrapModule(AppModule);
Plunker Example
这篇关于如何在Angular 4.3.5中拦截对组件html模板的请求的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!