I have a file in D: Drive of my local system. I need to download the file into the E: Drive. How to do this using node.js and http request? I am a beginner in node.js. Please give me valuable suggestions.
Note: The file may be in any type.
3
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2Why do you need http? all you need is to move your file from one drive to another.anvarik– anvarik2014-05-07 13:04:06 +00:00Commented May 7, 2014 at 13:04
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but the requirement is to use http request.thevan– thevan2014-05-07 13:09:02 +00:00Commented May 7, 2014 at 13:09
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Is it a text file or a binary file?DrakaSAN– DrakaSAN2014-05-07 13:29:52 +00:00Commented May 7, 2014 at 13:29
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2 Answers
Here is an example:
// upload.js
var fs = require('fs')
var newPath = "E:\\newPath";
var oldPath = "D:\\oldPath";
exports.uploadFile = function (req, res) {
fs.readFile(oldPath, function(err, data) {
fs.writeFile(newPath, data, function(err) {
fs.unlink(oldPath, function(){
if(err) throw err;
res.send("File uploaded to: " + newPath);
});
});
});
};
// app.js
var express = require('express'), // fetch express js library
upload = require('./upload'); // fetch upload.js you have just written
var app = express();
app.get('/upload', upload.uploadFile);
app.listen(3000);
Basically there are two parts, one doing the copying from one drive to another, and the other one is for triggering. Once you run you app.js and make a GET request to localhost:3000/upload it will copy the file from newPath to the oldPath. For further information have a look to expressjs and fs.
3 Comments
thevan
while running, i am getting error as "Error: EPERM, open 'E:\'"
thevan
hi.. its working fine. But when downloading the file, the oldpath file gets removed. I want the file in old path also not to get deleted. Is it possible?
thevan
I commented fs.unlink line. now it gives the desired result. thank you sp much.
Assuming it's a text file, you would have to write two node.js server.
The first would answer (all/specific, your choice) http get with the content of the file, the other would make a get and download the file.
server.js: Will work only for text file
var http = require('http'),
fs = require('fs'),
server = http.createServer(function (req, res){
res.writeHead(200, {'content-type': 'text/text'});
fs.readFile('E:/path/to/file.txt', function (data) {
res.write('' + data);
res.end();
});
}).listen(8080);
client.js
var http = require('http'),
fs = require('fs'),
file = fs.createWriteStream('D:/path/to/new.txt', {flags: 'w'});
http.get('http://localhost:8080', function (res) {
res.pipe(file, {end: 'false'});
res.on('end', function() {
file.end();
});
});
EDIT:
The only advantage versus anvarik's solution is that I don t use express...
4 Comments
anvarik
yeah but your solution is only for text :) mine is for all kinds of data
DrakaSAN
@anvarik: Yup, that s why I say it s the only advantage ; )
thevan
Hi, how to download all type of files?
thevan
and the above code not downloads the file and it returns as null