app.use vs router.use code example
Example 1: express get all routes and methods
function print (path, layer) {
if (layer.route) {
layer.route.stack.forEach(print.bind(null, path.concat(split(layer.route.path))))
} else if (layer.name === 'router' && layer.handle.stack) {
layer.handle.stack.forEach(print.bind(null, path.concat(split(layer.regexp))))
} else if (layer.method) {
console.log('%s /%s',
layer.method.toUpperCase(),
path.concat(split(layer.regexp)).filter(Boolean).join('/'))
}
}
function split (thing) {
if (typeof thing === 'string') {
return thing.split('/')
} else if (thing.fast_slash) {
return ''
} else {
var match = thing.toString()
.replace('\\/?', '')
.replace('(?=\\/|$)', '$')
.match(/^\/\^((?:\\[.*+?^${}()|[\]\\\/]|[^.*+?^${}()|[\]\\\/])*)\$\//)
return match
? match[1].replace(/\\(.)/g, '$1').split('/')
: '<complex:' + thing.toString() + '>'
}
}
app._router.stack.forEach(print.bind(null, []))
Example 2: node express dynamic route and error handler
app.use(function (req, res, next) {
res.status(404).send("Sorry can't find that!")
})
Example 3: express mounting router
var express = require('express')
var router = express.Router()
router.use(function timeLog (req, res, next) {
console.log('Time: ', Date.now())
next()
})
router.get('/', function (req, res) {
res.send('Birds home page')
})
router.get('/about', function (req, res) {
res.send('About birds')
})
module.exports = router