How to create an Http instance without using constructor DI?

Question

For some reason, I don't want to use constructor(private http: Http) DI.

Looked at https://angular.io/docs/ts/latest/api/http/index/Http-class.html

and tried

const injector = ReflectiveInjector.resolveAndCreate([
  BaseRequestOptions,
  XHRConnection,
  {
    provide: Http,
    useFactory: (backend, defaultOptions) => new Http(backend, defaultOptions),
    deps: [XHRConnection, BaseRequestOptions]
  }
]);

this.http = injector.get(Http);

Error says

ORIGINAL EXCEPTION: Cannot resolve all parameters for 'XHRConnection'(?, ?, ?). Make sure that all the parameters are decorated with Inject or have valid type annotations and that 'XHRConnection' is decorated with Injectable.

score 1 · Answer 1 · answered Aug 29 '16 at 15:22

1

You need to provide HTTP_PROVIDERS:

const injector = ReflectiveInjector.resolveAndCreate([
  HTTP_PROVIDERS,
  XHRConnection,
  {
    provide: Http,
    useFactory: (backend, defaultOptions) => new Http(backend, defaultOptions),
    deps: [XHRConnection, BaseRequestOptions]
  }
]);

answered Aug 29 '16 at 15:22

Günter Zöchbauer

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HTTP_PROVIDERS is now deprecated. Do you have an example for RC.5+? – Lucio Mollinedo Sep 21 '16 at 17:17

score 0 · Answer 2 · answered Aug 29 '16 at 18:45

0

Actually, it can be as simple as

const injector = ReflectiveInjector.resolveAndCreate([
  HTTP_PROVIDERS
]);

this.http = injector.get(Http);

Based on Günter Zöchbauer's answer.

answered Aug 29 '16 at 18:45

Shawn

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HTTP_PROVIDERS is now deprecated. Do you have an example for RC.5+? – Lucio Mollinedo Sep 20 '16 at 22:21

How to create an Http instance without using constructor DI?

2 Answers2

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