如何正确地从UserFrosting控制器返回.xls Excel文件并在Angular 2+中处理它？

return $response->withHeader('Content-Type', 'application/vnd.ms-excel')
                ->withHeader('Content-Disposition', 'attachment;filename="filename.xls"')
                ->write($excelFile->save('php://output'));

import { HttpClient } from '@angular/common/http';
import * as XLSX from 'xlsx';

// ...

constructor(private http: HttpClient) {}

downloadExcelFile() {
  this.http.get('url/to/your/userfrosting/controller', { responseType: 'blob' })
    .subscribe(response => {
      const fileReader = new FileReader();
      fileReader.onload = (e: any) => {
        const arrayBuffer = e.target.result;
        const workbook = XLSX.read(arrayBuffer, { type: 'array' });
        // 处理Excel文件，例如提取数据等
      };
      fileReader.readAsArrayBuffer(response);
    });
}