如何在快递中分组api

Here is the example:

这是一个例子:

var app = require('express')();

function validateToken(req, res, next) {
    // Do something with request here
    next();
};

app.get('/user/login', function(req, res) {
    //code
});

app.post('/user/register', function(req, res) {
    //code
})

app.put('/user/register', validateToken, function(req, res) {
    //code
})

app.delete('/user/delete', validateToken, function(req, res) {
    //code
})
var app = requ