如何使用angular 7下载文件？

npm install file-saver --save

import { Component } from '@angular/core';
import { FileSaverService } from 'ngx-filesaver';

@Component({
  selector: 'app-download',
  templateUrl: './download.component.html',
  styleUrls: ['./download.component.css']
})
export class DownloadComponent {
  constructor(private fileSaverService: FileSaverService) { }

  downloadFile() {
    const fileUrl = 'http://example.com/file.pdf'; // 替换为要下载的文件的URL
    const fileName = 'file.pdf'; // 替换为要保存的文件名

    this.fileSaverService.saveAs(fileUrl, fileName);
  }
}

<button (click)="downloadFile()">下载文件</button>