const myexpress = require('express');

const bodyparser = require('body-parser');

var server = myexpress();

server.listen();

server.use('/',function (req,res,next) {

    console.log('a');

    req.name = "陈培昌";

    next()

});

server.use('/',function (req,res,next){

    console.log('b');

    req.intro = req.name+"芳龄"+;

    next();

});

server.use('/',function (req,res,next) {

    console.log(req.intro)

});

a

b

陈培昌芳龄22