如何在前端展示后端返回的pdf Base64格式字符串

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如何在前端展示后端返回的pdf Base64格式字符串

// fileBase64 就是后端返回的 pdf Base64格式字符串getPdfDocument(fileBase64){let fileBlob =this.base64ToBlobsdf(fileBase64,'application/pdf');let basePdfUrl = window.URL.createObjectURL(fileBlob);
          sessionStorage.setItem('basePdfUrl', basePdfUrl);
          location.href ="lookPdf.html";let newWindow = window.open("");
          newWindow.document.write("<iframe width='100%' height='100%' src='"+basePdfUrl+"'></iframe>");}})},base64ToBlobsdf(fileBase64,fileType){let raw = window.atob(fileBase64);let rawLength = raw.length;let uint8Array =newUint8Array(rawLength);while(rawLength--){
        uint8Array[rawLength]= raw.charCodeAt(rawLength);}returnnewBlob([uint8Array],{type: fileType});},