Node.js非www到www重定向不起作用

Question

I have referred to this: https://www.hacksparrow.com/how-to-forward-non-www-to-www-domain-name-and-vice-versa-in-node-js-express.html

And to other Stackoverflow questions, but I still get errors when doing what they said:

This code:

app.get('/*', function(req, res, next) {
    if (req.headers.host.match(/^www/) == null ) res.redirect('http://www.' + req.headers.host + req.url, 301);
    else next();
});

Redirects me to www.localhost:8080 ...

I have tried other syntax but still not working:

app.get('/*', function(req, res, next) {
    if (req.headers.host.match(/^www/) == null ) res.redirect('http://www.ride4you.co.il', 301);
    else next();
});

(It redirects too many time until Chrome is timedout).

My question is how to fix this, in order to redirect ANY kind of addresses in the web address bar to https://www.mydomain.co.il , for example: mydomain.com www.mydomain.co.il http://mydomain.co.il , I want all of them to point to the first I wrote.

Thanks.

Answer 1

Only allow the specific host you want through, and catch the unlikely case that it's a HTTP/1.0 without a host header.

app.use((req, res, next) => {
    if ( !req.headers.host || req.headers.host === 'www.mydomain.co.il' ) return next() 
    res.redirect('http://www.mydomain.co.il/', 301)
})

You can keep the users original request path in the new URL.

res.redirect('http://www.mydomain.co.il'+req.originalUrl, 301)