General
Request URL: http://localhost:8080/rest/user/login?username=1@1&password=12345
Request Method: POST
Status Code: 200
Remote Address: [::1]:8080
Referrer Policy: no-referrer-when-downgrade

Response
Access-Control-Allow-Origin: *
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Content-Length: 230
Date: Tue, 08 May 2018 14:31:08 GMT
Expires: 0
Pragma: no-cache
Set-Cookie: JSESSIONID=C19E560EBF7C0F96FCE7361ECE1B7D12; Path=/; HttpOnly
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-XSS-Protection: 1; mode=block

Request URL: http://localhost:8080/rest/vds/list?pageNumber=0&pageSize=15

General
Request URL: http://localhost:8080/rest/vds/list?pageNumber=0&pageSize=15
Request Method: GET
Status Code: 401
Remote Address: [::1]:8080
Referrer Policy: no-referrer-when-downgrade

Responce
Access-Control-Allow-Origin: *
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Content-Type: application/json;charset=UTF-8
Date: Tue, 08 May 2018 14:31:27 GMT
Expires: 0
Pragma: no-cache
Transfer-Encoding: chunked
X-Content-Type-Options: nosniff
X-Frame-Options: DENY
X-XSS-Protection: 1; mode=block

Request
Accept: application/json, text/plain, */*
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,ru;q=0.8
Connection: keep-alive
Host: localhost:8080
Origin: http://localhost:4200
Referer: http://localhost:4200/vds-list
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36

@Injectable()
export class CoreApi {
  private baseUrl = 'http://localhost:8080/rest/';

  constructor(public http: HttpClient) {
  }

  public get(url: string = ''): Observable<any> {
    return this.http.get(this.getUrl(url));
  }

  public post(url: string, data: any = {}): Observable < any > {
    return this.http.post(this.getUrl(url), data);
  }

  private getUrl(url: string = ''): string {
    return this.baseUrl + url;
  }
}

@Injectable()
export class VdsService extends CoreApi {

    constructor(public http : HttpClient) {
        super(http);
    }

    getVdsList() : Observable < Vds[] > {
        return this.get(`vds/list?pageNumber=0&pageSize=15`).map((data : Vds[]) => data);
    }

}