nodejs - How to read and output jpg image

Question

I ve been trying to find an example of how to read a jpeg image and then show the image   var http   require  http    fs   require  fs     http createServer function  req  res        res writeHead 200    Content-Type    text html      fs readFile  image jpg   function  err  data      if  err  throw err    res write data        res end       listen 8124   127 0 0 1    console log  Server running at http   127 0 0 1 8124       Tried the following code but I think the encoding needs to be set as buffer  Using console log it outputs  Object  for the data

User · Answer

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

User · Answer

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  lt img gt  with a data URI source  For example     res writeHead 200    Content-Type    text html       res write   lt html gt  lt body gt  lt img src  data image jpeg base64      res write Buffer from data  toString  base64       res end     gt  lt  body gt  lt  html gt

[node.js] nodejs - How to read and output jpg image?

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