Express.js中的错误处理

Question

How to handle errors in Express.js?

For example, if user calls non-existing resource ?

Answer 1

If you want to yield a 404 just add this as your last route:

app.get('*', function(req, res){
  res.send('Not Found', 404);
});

So everything that wasn't handled by any other route will results in a 404.

You can find additional information on sending error responses in the section of the expressJS API Reference that covers the send method of the Response object. It is located here .

Answer 2

Omen, if you want to cover all HTTP methods use:

app.all('*', function(req, res) {

   // Do something...

});