NodeJs ExpressJS错误处理故障

Question

I am having trouble with express Error handling. Here is my configuration for the server.

    server.use(express.static(__dirname + '/public'));
    server.use(server.router);
    server.use(express.errorHandler({ dumpExceptions: true, showStack: true }));
    server.use(express.bodyParser());

Then I try adding this line of code

server.error(function(err, req, res, next){
if (err instanceof NotFound) {
    res.render('404.jade');
} else {
    next(err);
}
});

Then in my console, I get this message,

what am I doing wrong? I cant get error handling to work.

Answer 1

What version of express are you using?

Because there is a new 3.x version ( still in alpha stage ) out that changed quite a lot of stuff , and things such as the error handling is changed

Check out the migration guide from 2.x to 3.x

The page is a work in progress, consider moving back to 2.x or waiting for a better 3.x documentation and migration guide