71 lines
No EOL
2 KiB
JavaScript
71 lines
No EOL
2 KiB
JavaScript
const _express = require('express');
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const _webapp = _express();
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// use require('http-error-pages') for regular apps!
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const _httpErrorPages = require('../lib/main');
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async function bootstrap(){
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// demo handler
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_webapp.get('/', function(req, res){
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res.type('.txt').send('HttpErrorPages Demo');
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});
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// throw an 403 error
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_webapp.get('/my403error', function(req, res, next){
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const myError = new Error();
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myError.status = 403;
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next(myError);
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});
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// throw an unknown error
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_webapp.get('/unknown', function(req, res, next){
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const myError = new Error();
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myError.status = 523;
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next(myError);
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});
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// throw an internal error
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_webapp.get('/500', function(req, res){
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throw new Error('Server Error');
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});
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// custom errorhandling middleware
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// use this pattern in production to log errors!
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_webapp.use(function(err, req, res, next){
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console.log(`[custom logging middleware] ${err.message}`);
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// forward error
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next(err);
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});
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// use http error pages handler (final statement!)
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// because of the asynchronous file-loaders, wait until it has been executed
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await _httpErrorPages.express(_webapp, {
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lang: 'en_US',
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payload: {
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footer: 'Hello <strong>World</strong>',
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pagetitle: 'we are sorry - an internal error encountered',
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},
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filter: function(data){
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// remove footer
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//data.footer = null;
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return data;
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},
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onError: function(data){
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// for debugging purpose only!!
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// use custom middleware for errorlogging!!
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console.log(`[expressjs] ERROR: ${data.title}\n${data.error.stack}`)
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}
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});
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// start service
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_webapp.listen(8888);
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}
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// invoke bootstrap operation
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bootstrap()
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.then(function(){
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console.log('Running Demo on Port 8888');
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})
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.catch(function(e){
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console.error(e);
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}); |