Cannot find printer under the JavaFX libraries QZ Tray v2.1.2

[Carlos R Canas]

This message appeares using the demo qz-tray and with the test webpage that we setup to see if we can incorporate qz-tray into our web ordering system. 

Even though the message shows up, the demo page prints ok, but not our test order ticket.  This just started to happen, it worked fine a few hours ago.

The message does not shows and everything works when we print a pdf or an image from qz-tray demo page.  We do not have anything setup for that on our test web page.

Here is the java script we use (we copied and modified your sample):

From within a jquery click activated function:

$("#va-orders-admin-content").on("click",".va_orders_admin_print_ticket",function () {

                  var posting = $.post(

                               $("#url").val(),

                               { 

                                nonce: $("#nonce").val(),

                                order_id: $(this).attr('order-id'),

                                ticket_type: $(this).attr('ticket-type'),

                                action: 'va_orders_admin_print_ticket'

                               }

                  );

                  posting.done(function( data ) {

                     qzconnect().then(function() {return qzprint(data);}).then(function()           {qzsuccess();}).catch(qzfail);                  

 

            });

    });

 And the functions are:

qzconnect().then(function() {return qzprint(data);}).then(function() {qzsuccess();}).catch(qzfail);

function qzconnect() {

 

    return new Promise(function(resolve, reject) {

        if (qz.websocket.isActive()) {  // if already active, resolve immediately

            resolve();

        } else {

          

            // try; to connect once before firing the mimetype launcher

            qz.websocket.connect().then(resolve, function retry() {

                // if a connect was not successful, launch the mimetime, try 3 more times

                window.location.assign("qz:launch");

                qz.websocket.connect({ retries: 2, delay: 1 }).then(resolve, reject);

            });

        }

    });

}

function qzprint(data) {

  var printer = 'canon';

  var top = 0.25, right = 0, bottom = 0, left = 0.25;

  var config = qz.configs.create(printer, { margins: [ top, right, bottom, left] }); 

    var printdata = [{ 

                    type: 'pixel',

                    format: 'html',

                    flavor: 'plain', 

                    data: data 

                    }];

                                          

     return qz.print(config, printdata);

}

// notify successful print

function qzsuccess() { 

    //alert("Success");

}

// exception catch-all

function qzfail(e) {

    alert(e);

}

 As I said, it worked fine until just an hour ago.

Thank you

[Lite Finocchiaro]

Carlos:

I think this was caused by an update to Oracle Java 8.

Can you please install AdoptOpenJDK 11, HotSpot, and share your findings?

https://adoptopenjdk.net/

Kind regards,

Lite Finocchiaro

VP, QZ Industries

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[Carlos R Canas]

OK, that fixed the problem. 

Thanks.