I am using expressjs, I would like to do something like this:
app.post('/bla',function(req,res,next){ //some code if(cond){ req.forward('staticFile.html'); } }); 
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4 Answers
As Vadim pointed out, you can use res.redirect to send a redirect to the client.
If you want to return a static file without returning to the client (as your comment suggested) then one option is to simply call sendfile after constructing with __dirname. You could factor the code below into a separate server redirect method. You also may want to log out the path to ensure it's what you expect.
filePath = __dirname + '/public/' + /* path to file here */; if (path.existsSync(filePath)) { res.sendfile(filePath); } else { res.statusCode = 404; res.write('404 sorry not found'); res.end(); } Here's the docs for reference: http://expressjs.com/api.html#res.sendfile
1 Comment
Alexander
express deprecated res.sendfile. Use res.sendFile instead. Please find a full answer below.
Is this method suitable for your needs?
app.post('/bla',function(req,res,next){ //some code if(cond){ res.redirect('/staticFile.html'); } }); Of course you need to use express/connect static middleware to get this sample work:
app.use(express.static(__dirname + '/path_to_static_root')); UPDATE:
Also you can simple stream file content to response:
var fs = require('fs'); app.post('/bla',function(req,res,next){ //some code if(cond){ var fileStream = fs.createReadStream('path_to_dir/staticFile.html'); fileStream.on('open', function () { fileStream.pipe(res); }); } }); 
1 Comment
ciochPep
is it possible to do so without going back to the client?
Sine express deprecated res.sendfile you should use res.sendFile instead.
Pay attention that sendFile expects a path relative to the current file location (not to the project's path like sendfile does). To give it the same behaviour as sendfile - just set root option pointing to the application root:
var path = require('path'); res.sendFile('./static/index.html', { root: path.dirname(require.main.filename) }); Find here the explanation concerning path.dirname(require.main.filename)
Comments
Based on @bryanmac's answer:
app.use("/my-rewrite", (req, res, next) => { const indexFile = path.join(__dirname, "index.html"); // Check if file exists fs.stat(indexFile, (err, stats) => { if (err) { // File does not exist or is not accessible. // Proceed with other middlewares. If no other // middleware exists, expressjs will return 404. next(); return; } // Send file res.sendFile(indexFile); }); }); Since path.exists and path.existsSync don't exist anymore in Node.js v16.9.1, fs.stat is used.
