如何在新标签页上打开.pdf

Question

The Objective:

I have to print a PDF on a new tab after some tasks have finished correctly.

Steps: I want to execute a method that should go to the server, take the PDF and open it on a new Tab, I was trying with these but is not working:

Controller : Export

 public ActionResult PrintPdf()
    {
        Response.AppendHeader("Content-Disposition", "inline; filename= " + MyClassPdfWriter.GetFileName);
        return File(MyClassPdfWriter.GetMemoryStream, "application/pdf");
    }

View :

function TasksSucced(){
      $.get('@Url.Action("PrintPdf", "Export", "new {target = _blank}")');
}

Answer 1

Solved! That works for me

 window.open('/Export/PrintPdf');

Answer 2

There several ways to download or view the PDF.

• View

You can set the content-type as application/pdf in the response header just like Content-Type: application/pdf

And in order to open it to new tab in javascript, please add this code.

window.open("Here Download PDF url", '_blank');

• Download

You need to set the content-type as application/octet-stream in the response header just like application/octet-stream .

And add download HTML5 attribute to a tag or just target="_blank" .

<a href="PDF URL" download="pdf">Download</a>
<a href="PDF URL" target="_blank">Download</a>

So you can use PDF.js or 3rd library to view the PDF in iFrame or inline page.

Answer 3

$("a[target!='_blank'][href$='.pdf']").attr("target", "_blank");

Answer 4

If anyone is having a similar problem, none of the above solutions worked for me in Google Chrome (they did work in Firefox)

This code worked in all major browsers:

var a = document.createElement('A');
var filePath = 'https://pathtopdf.com/file.pdf';
a.href = filePath;
a.download = filePath.substr(filePath.lastIndexOf('/') + 1);
document.body.appendChild(a);
a.click();
document.body.removeChild(a);

Answer 5

You can use the following solution

   jQuery('<form target="_blank" action="' + URL + '" method="get"></form>').appendTo('body').submit().remove();

where URL is the pdf url...

Answer 6

You can try using jQuery.deffered . I prepared sample function for you. It will process getPdf call, and then will resolve promise. Hope this helps

function getPDF() {
    return '';
}

getPdf()
  .then(function(response) {
    console.log('response here' + response);
    window.open(response);
  }).fail(function(){
      console.error('failed reposne');
  });

Answer 7

This will convert the base64 to pdf and then open in new Tab.

export default function base64toPdfInNewTab(pdf: string) {
  var binary = atob(pdf.replace(/\s/g, ""));
  var len = binary.length;
  var buffer = new ArrayBuffer(len);
  var view = new Uint8Array(buffer);

  for (var i = 0; i < len; i++) {
    view[i] = binary.charCodeAt(i);
  }
  const file = new Blob([view], {
   type: "application/pdf",
  });

  const fileURL = URL.createObjectURL(file);

  window.open(fileURL, "_blank");
 }

Parameter pdf is the base64 string.

Answer 8

https://stackoverflow.com/a/72527783

It's work me.

My sample code

    var order_id = $(this).data('order_id');

    var url = 'pdf url';

    var data      = {
        order_id
    };

    var myHeaders = new Headers();
    myHeaders.append("Content-Type", "application/x-www-form-urlencoded");

    var urlencoded = new URLSearchParams();
    urlencoded.append("param", JSON.stringify(data));

    var requestOptions = {
        method  : 'POST',
        headers : myHeaders,
        body    : urlencoded,
        redirect: 'follow'
    };

    fetch(url, requestOptions)
    .then((response) => response.blob())
    .then((blob) => {
        const _url = window.URL.createObjectURL(blob);
        window.open(_url, '_blank');
    }).catch((err) => {
        console.log(err);
    });