is it possible to print an image with node.js?

问题

Ok, so I'm trying to print from a webpage (the typical "print" button, but I don't want the print dialog to appear) so I decided to use my already existing node.js backend to do the task (mainly because printing from browser is nearly impossible without the printing dialog).

I found the node-printer (https://github.com/tojocky/node-printer) module, and it works great, but only with text. I tried to send RAW data, but what it does is printing the raw characters. What I actually need is to print a logo, along with some turn information (this is for a customer care facility).

Also, the printer must be installed locally, so I can't use IPP.

Is there any way to print an image, or a combination of images and text with node.js? can it be done through node-printer or is there another way?

回答1:

I ended calling an exe to do the work for me. I use a child_process to call printhtml, which does all the printing work for me. My code ended this way:

var exec = require('child_process').exec;
exec('printhtml.exe file=file.html', function(err, data) {  
    console.log(data.toString());                       
});

回答2:

Actually, you can print image using node-printer. This work for me

var Printer = require('node-printer');
var fs = require('fs');

// Get available printers list 
var listPrinter = Printer.list();

// Create a new Pinter from available devices 
var printer = new Printer('YOUR PRINTER HERE. GET IT FROM listPrinter');

// Print from a buffer, file path or text 
var fileBuffer = fs.readFileSync('PATH TO YOUR IMAGE');
var jobFromBuffer = printer.printBuffer(fileBuffer);

// Listen events from job 
jobFromBuffer.once('sent', function() {
    jobFromBuffer.on('completed', function() {
        console.log('Job ' + jobFromBuffer.identifier + 'has been printed');
        jobFromBuffer.removeAllListeners();
    });
});

回答3:

I had success with the Node IPP package https://www.npmjs.com/package/ipp.

The example code on the docs, which uses another node module PDFKIT to convert your html/file into a PDF, does not work. See my answer here: Cannot print with node js ipp module for a working example.

来源：https://stackoverflow.com/questions/23437804/is-it-possible-to-print-an-image-with-node-js

标签

javascript

node.js

printing