Ionic2 config proxies API endpoint

Ionic Framework ionic-v3
1

Hi, I try to call REST service,
First step, I try with http.get(myapiUrl), I got XMLHttpRequest,error

So, I change my get url and I added api proxy:
ionic.config.json

{
  "name": "GestInt",
  "app_id": "fr.gestInt",
  "v2": true,
  "typescript": true,
  "proxies": [
{
  "path": "/apilogin",
  "proxyUrl": "http://apiUrl"
}]
}

clientapi.ts

this.url="/apilogin";
this.options = new RequestOptions({headers: this.headers, search: params});
  return this._http.get(this.url,this.options).share()...

Sadly, the url don’t change on execution on browser > Request URL:http://localhost:8100/apilogin

PS I have serve the project