使用angular 7从API接受ZIP类型的响应？

import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';

@Injectable({
  providedIn: 'root'
})
export class ApiService {
  constructor(private http: HttpClient) { }

  getZipData(): Observable<Blob> {
    return this.http.get('API_URL', { responseType: 'blob' });
  }
}

import { Component } from '@angular/core';
import { ApiService } from './api.service';

@Component({
  selector: 'app-root',
  template: `
    <button (click)="downloadZip()">Download ZIP</button>
  `
})
export class AppComponent {
  constructor(private apiService: ApiService) { }

  downloadZip() {
    this.apiService.getZipData().subscribe((data: Blob) => {
      // 处理ZIP响应数据，例如保存到本地
      const blob = new Blob([data], { type: 'application/zip' });
      const url = window.URL.createObjectURL(blob);
      const link = document.createElement('a');
      link.href = url;
      link.download = 'file.zip';
      link.click();
      window.URL.revokeObjectURL(url);
    });
  }
}