问题
I'm developing an express app.
I currently have the following in my server.js
process.on('uncaughtException', function (err) {
console.log( "UNCAUGHT EXCEPTION " );
console.log( "[Inside 'uncaughtException' event] " + err.stack || err.message );
});
Which stops the server crashing every time there's an error, however, it just sits there...
is it possible to instead of console.log, to send a 500 error page with the error details?
回答1:
I don't think you can from within the uncaughtException do a response since that could happen even when there is no request occurring.
Express itself provides a way to handle errors within routes, like so:
app.error(function(err, req, res, next){
//check error information and respond accordingly
});
回答2:
Per ExpressJS Error Handling, add app.use(function(err, req, res, next){ // your logic }); below your other app.use statements.
Example:
app.use(function(err, req, res, next){
console.log(err.stack);
// additional logic, like emailing OPS staff w/ stack trace
});
来源：https://stackoverflow.com/questions/10221309/use-process-onuncaughtexception-to-show-a-500-error-page