如何将jsPDF转换的pdf文件发送到后端服务器？

Question

I need to send a png file to the backend server. I converted it to pdf using jsPDF:

var doc = new jsPDF('l', 'mm', [210, 210]);
doc.addImage(myPngData, 'PNG', 0, 0, 210, 210);

Now I need to send it to the server using my old-school JQuery project:

$.post(url,
  {
    key1: val1,
    key2: val2,
    pdf: //pdf file goes here, will doc work?,
  },

But what should I really send? Cause sending doc just won't work? Unfortunately I cannot just send and check it as the backend is not ready yet.

Answer 1

You can use doc.output('datauristring') and send it to your server. Below is my code to send the whole html page to the server, but you get the idea.

function sendToServer() {
    let pdf = new jsPDF('p', 'pt', 'a4');
    pdf.html(document.body, {
        callback: function (pdf) {
            let obj = {};
            obj.pdfContent = pdf.output('datauristring');
            var jsonData = JSON.stringify(obj);
            $.ajax({
                url: '/api/jspdf/html2pdf',
                type: 'POST',
                contentType: 'application/json',
                data: jsonData
            });
        }
    });
}