angular2 路由ajax,angular - Make AJAX request before bootstrapping Angular2 application - Stack Overfl...

In my Angular2 application I need to make a call to some function from AuthenticationService and bootstrap application based on results of this call. The problem is that AuthenticationService has dependency on HTTP from @angular/http and I have very little idea of how to build http service manually before calling bootstrap function. Accepted answer in this question angular2 bootstrap with data from ajax call(s) describes what I want to achieve perfectly, but unfortunately it was given to some previous version of Angular2.

I tried to create http service this way:

let injector = ReflectiveInjector.resolveAndCreate(HTTP_PROVIDERS)

let http = injector.get(Http);

but I got null reference exception in XsrfCookieStrategy or something like that. I believe it is possible to inject some empty XsrfStrategy, but it seems to be more like a hack than a good solution. So the question is: are there any good (official) way to bootstrap Angular2 application with providing some dependencies up-front similar to the link I added above.