在Angular 2中将Base64字符串转换为pdf

npm install pdfmake --save

import * as pdfMake from 'pdfmake/build/pdfmake';
import * as pdfFonts from 'pdfmake/build/vfs_fonts';

pdfMake.vfs = pdfFonts.pdfMake.vfs;

convertBase64ToPdf(base64String: string, fileName: string) {
  const byteCharacters = atob(base64String);
  const byteNumbers = new Array(byteCharacters.length);
  for (let i = 0; i < byteCharacters.length; i++) {
    byteNumbers[i] = byteCharacters.charCodeAt(i);
  }
  const byteArray = new Uint8Array(byteNumbers);
  const pdfData = new Blob([byteArray], { type: 'application/pdf' });

  if (window.navigator && window.navigator.msSaveOrOpenBlob) {
    // For IE browser
    window.navigator.msSaveOrOpenBlob(pdfData, fileName);
  } else {
    // For other browsers
    const fileURL = URL.createObjectURL(pdfData);
    const link = document.createElement('a');
    link.href = fileURL;
    link.download = fileName;
    link.click();
  }
}

const base64String = '...'; // 替换为实际的Base64字符串
const fileName = 'example.pdf'; // 替换为实际的文件名
this.convertBase64ToPdf(base64String, fileName);