Error Handling - Express
Examples
Basic 404 and 500
Handles 404 and 500 errors using Express middleware. Shows error in development, but not production. via
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error("Not Found");
err.status = 404;
next(err);
});
// error handlers
// development error handler
// will print stacktrace
if (app.get("env") === "development") {
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render("error", {
message: err.message,
error: err
});
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render("error", {
message: err.message,
error: {}
});
});