如何在Angular 8中使用base64 pdf字符串显示pdf？

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-pdf-viewer',
  templateUrl: './pdf-viewer.component.html',
  styleUrls: ['./pdf-viewer.component.css']
})
export class PdfViewerComponent {
  pdfData: string;

  constructor(private http: HttpClient) { }

  ngOnInit() {
    this.getPdfData();
  }

  getPdfData() {
    this.http.get('url-to-your-base64-pdf-string')
      .subscribe((data: any) => {
        this.pdfData = data.pdfString;
      });
  }
}

<embed [src]="pdfData" type="application/pdf" width="100%" height="600px" />
<!-- 或者 -->
<iframe [src]="pdfData" type="application/pdf" width="100%" height="600px"></iframe>