Display PDF from REST API Call.

[S R]

I am trying to use PDF Tron and I am able to display the pdf fine while loading it from local file system. I want the pdf to be displayed from data(blob) which comes from REST API. After annotating the pdf on save I want to post back pdf to the URL with annotations.
How do we do this ?

[Justin Jung]

Hello Sandeep,

You can use document.getFileData function to retrieve the pdf data with annotations as the following:

function uploadPDF() {

  var docViewer = readerControl.docViewer;

  var doc = docViewer.getDocument();

  var annotManager = docViewer.getAnnotationManager();

  docViewer.getAnnotationsLoadedPromise().then(function() {

    var options = { 'xfdfString': annotManager.exportAnnotations(), 'flags': CoreControls.SaveOptions.LINEARIZED };

    doc.getFileData(options).then(function (data) {

      var arr = new Uint8Array(data);

      var blob = new Blob([arr], {

        type: 'application/pdf'

      });

      // post blob to the url

    });

  });

}

You could also refer to downloadFile function in PDFReaderControl.js.

Justin Jung

Software Developer

PDFTron Systems Inc.