Router([options])
let router = express.Router([options]);
-
options对象 -
caseSensitive,大小写敏感,默认不敏感 -
mergeParams,保留父路由器的必需参数值,如果父项和子项具有冲突的参数名称,则该子项的值将优先 -
strict,激活严格路由,默认禁用,禁用之后/uu正常访问,但是/uu/不可以访问
1. router.all
- 全部调用
router.all(path, [callback, ...] callback)
router.all('*', fn1, fn2...);// 或者router.all('*', fn1);router.all('*', fn2);// 或者router.all('/user', fn3); 2. router.METHOD
router.METHOD(path, [callback, ...] callback)- 实际上就是
ajax的各种请求方法
router.get('/', (req, res, next) => { })router.post('/', (req, res, next) => { }) 3. router.route(path)
var router = express.Router();router.param('user_id', function(req, res, next, id) { // sample user, would actually fetch from DB, etc... req.user = { id: id, name: 'TJ' }; next();});router.route('/users/:user_id').all(function(req, res, next) { // runs for all HTTP verbs first // think of it as route specific middleware! next();}).get(function(req, res, next) { res.json(req.user);}).put(function(req, res, next) { // just an example of maybe updating the user req.user.name = req.params.name; // save user ... etc res.json(req.user);}).post(function(req, res, next) { next(new Error('not implemented'));}).delete(function(req, res, next) { next(new Error('not implemented'));}) 4. router.use
4.1 使用路由
var express = require('express');var app = express();var router = express.Router();// simple logger for this router's requests// all requests to this router will first hit this middlewarerouter.use(function(req, res, next) { console.log('%s %s %s', req.method, req.url, req.path); next();});// this will only be invoked if the path starts with /bar from the mount pointrouter.use('/bar', function(req, res, next) { // ... maybe some additional /bar logging ... next();});// always invokedrouter.use(function(req, res, next) { res.send('Hello World');});app.use('/foo', router);app.listen(3000); 4.2 使用模块方法
var logger = require('morgan');router.use(logger());router.use(express.static(__dirname + '/public'));router.use(function(req, res){ res.send('Hello');});