如何在Angular 5中将http重定向到https？

import { NgModule, APP_INITIALIZER } from '@angular/core';
import { LocationStrategy, HashLocationStrategy } from '@angular/common';

export function checkProtocol() {
  return () => {
    if (location.protocol !== 'https:') {
      location.href = location.href.replace(/^http:/, 'https:');
    }
  };
}

@NgModule({
  providers: [
    {
      provide: APP_INITIALIZER,
      useFactory: checkProtocol,
      multi: true
    },
    {
      provide: LocationStrategy,
      useClass: HashLocationStrategy
    }
  ]
})
export class AppModule { }