Http.get is undefined ionic2

Ionic Framework ionic-v3
1

I want to get data json to show listpage but http.get is undefined
thanks for your help. :slight_smile:

for(var i=0;i<this.foundRepos.length;i++){
            if(!this.foundRepos[i].search.isbn){
              this.foundRepos[i].se = "assets/read3.png";
            }
            if(this.foundRepos[i].search.isbn){
              this.foundRepos[i].se = this.foundRepos[i].search.isbn;
this.api.getImage(this.foundRepos[i].se).subscribe(
            data => {

              this.fff = data.json();
            },
            err => console.error(err),
            () => console.log('completed')
          );
            this.foundRepos[i].se = this.fff; <---this undefined
        }
              }

listpage.html

<ion-item text-wrap *ngFor="let item of  foundRepos" (click)="goToDetails(item)">
  <p>{{ item.type }}</p>
  <ion-thumbnail item-left>
    <img src="{{item.se}}">
</ion-thumbnail>
2 
import { Http } from '@angular/http';
import 'rxjs/add/operator/map';