import { HttpClientModule } from '@angular/common/http';
@NgModule({
 imports: [
  HttpClientModule,
 ]
})
export class AppModule {}

import { HttpClient } from '@angular/common/http';
export class ConfigService {
 constructor(private http: HttpClient) { }
}

return this.http.get/post(url:'请求地址' ,
  options: {
   headers: this.headers
  })
   .toPromise()
   .then((data: any) => {
    return data;
   })
   .catch((err) => {
    console.log(err);
   });
 }

{
  "lists":[
    {"title":"","pic":""},
    {"title":"","pic":""}
  ]
}