如何在angular中使文件可下载？

import { Component } from '@angular/core';
import { DomSanitizer } from '@angular/platform-browser';

constructor(private sanitizer: DomSanitizer) {}

downloadFile() {
  const fileUrl = 'https://example.com/path/to/file.pdf'; // 替换为你的文件链接
  const link = document.createElement('a');
  link.href = fileUrl;
  link.download = 'filename.pdf'; // 替换为你想要的文件名
  link.target = '_blank';
  document.body.appendChild(link);
  link.click();
  document.body.removeChild(link);
}

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