express.js中路由器优先级的顺序
我想了解express.js中的顺序优先级。例如,下面的代码
var routes = require('./routes/index');var users = require('./routes/users');
var api = require('./routes/api');
app.use('/api', api);
app.use('/users', users);
app.use('/:name', function(req, res, next) {
console.log('from app.js name:', req.params.name);
res.render('index', {
title: req.params.name
});
}, routes);
app.use('/', function(req, res, next) {
res.render('index', {
title: 'MainPage'
});
});
如果请求来自客户端localhost:3000 / api / abc和localhost:3000 / user /
abc,则来自api和用户模块的响应。但是,如果我发出类似localhost:3000 / myName /
xyz的请求,则应用程序模块将返回响应。此行为使我担心expressjs的优先顺序以及路由器模块的正确顺序是什么。为什么路由器不会在动作“
api”,“用户”和参数“:name”之间造成混淆。请让我清楚地理解表达的方式和优先顺序。
回答:
顺序是先到先得。
在您的情况下,如果用户点击/ api,他将获得api的响应,但是如果您/:name
在之前编写route
/api
,/:name
则/api
也将用于请求。
var routes = require('./routes/index');var users = require('./routes/users');
var api = require('./routes/api');
app.use('/api', api);
app.use('/users', users);
app.use('/:name', function(req, res, next) {
console.log('from app.js name:', req.params.name);
res.render('index', {
title: req.params.name
});
}, routes);
app.use('/', function(req, res, next) {
res.render('index', {
title: 'MainPage'
});
});
var routes = require('./routes/index');var users = require('./routes/users');
var api = require('./routes/api');
app.use('/:name', function(req, res, next) {
console.log('from app.js name:', req.params.name);
res.render('index', {
title: req.params.name
});
}, routes);
app.use('/api', api);
app.use('/users', users);
app.use('/', function(req, res, next) {
res.render('index', {
title: 'MainPage'
});
});
以上是 express.js中路由器优先级的顺序 的全部内容, 来源链接: utcz.com/qa/418246.html