nodejs - How to read and output jpg image?
Here is how you can read the entire file contents, and if done successfully, start a webserver which displays the JPG image in response to every request:
var http = require('http')var fs = require('fs')fs.readFile('image.jpg', function(err, data) { if (err) throw err // Fail if the file can't be read. http.createServer(function(req, res) { res.writeHead(200, {'Content-Type': 'image/jpeg'}) res.end(data) // Send the file data to the browser. }).listen(8124) console.log('Server running at http://localhost:8124/')})Note that the server is launched by the "readFile" callback function and the response header has Content-Type: image/jpeg.
[Edit] You could even embed the image in an HTML page directly by using an <img> with a data URI source. For example:
res.writeHead(200, {'Content-Type': 'text/html'}); res.write('<html><body><img src="data:image/jpeg;base64,') res.write(Buffer.from(data).toString('base64')); res.end('"/></body></html>');
Two things to keep in mind Content-Type and the Encoding
1) What if the file is css
if (/.(css)$/.test(path)) { res.writeHead(200, {'Content-Type': 'text/css'}); res.write(data, 'utf8');} 2) What if the file is jpg/png
if (/.(jpg)$/.test(path)) { res.writeHead(200, {'Content-Type': 'image/jpg'}); res.end(data,'Base64');}Above one is just a sample code to explain the answer and not the exact code pattern.