app.use('/',index);app.use('login',login);但当在流浪器中输入路径时登录页面不能正常跳转

//app.js:
var express = require('express');
var app = express();

...//其他逻辑代码

//路由
var routerIndex = require('./routes/index')
var routerAuthor = require('./routes/author')
var routerLogin = require('./routes/login')
app.use('/index',routerIndex);
app.use('/author',routerAuthor);
app.use('/login',routerLogin);

...//其他逻辑代码

//index.js

var express = require('express');
var router = express.Router();

/* GET home page. */
router.get('/', function(req, res, next) {
res.render('index', { title: 'Express' });
});

module.exports = router;

//login.js
var express = require('express');
var router = express.Router();
//后台管理系统登录

router.route('/login').get(function(req,res,next){
if(req.session.islogin){
res.locals.islogin = req.session.islogin;
}
if(req.cookies.islogin){
req.session.islogin = req.cookies.islogin;
}
res.render('login',{title:'登录'});
})；
module.exports = router;

res.render();

res.render()

res.end()