const express = require('express');const ConnectCas = require('connect-cas2');const bodyParser = require('body-parser');const session = require('express-session');const cookieParser = require('cookie-parser');const MemoryStore = require('session-memory-store')(session);const app = express();app.use(cookieParser());app.use(session({    name: 'NSESSIONID',    secret: 'Hello I am a long long long secret',    //resave: true,//添加这行    //saveUninitialized: true,//添加这行    store: new MemoryStore()  // or other session store}));const casClient = new ConnectCas({    //debug: true,    ignore: [        /\/ignore/    ],    match: [],    servicePrefix: 'http://130.51.23.165:3000',    //servicePrefix: 'http://localhost:3000',    serverPath: 'http://130.51.23.165:8180',    paths: {        validate: '/cas/validate',        //validate: '/index',        serviceValidate: '/cas/serviceValidate',        proxy: '',        login: '/cas/login',        logout: '/cas/logout',        proxyCallback: ''    },    ///proxy: false,    redirect: false,    gateway: false,    renew: false,    slo: true,    cache: {        enable: false,        ttl: 5 * 60 * 1000,        filter: []    },    fromAjax: {        header: 'x-client-ajax',        status: 418    }});app.use(casClient.core());// NOTICE: If you want to enable single sign logout, you must use casClient middleware before bodyParser.app.use(bodyParser.json());app.use(bodyParser.urlencoded({extended: true}));app.get('/logout', casClient.logout());// or do some logic yourselfapp.get('/logout', function (req, res, next) {    // Do whatever you like here, then call the logout middleware    casClient.logout()(req, res, next);});app.get('/', function (req, res) {    // console.log("login.req.session.cas is:")    // console.log(req.session.cas);    if (!req.session.cas.user) {        return next();    }    console.log("login.req.session.cas.user is:")    console.log(req.session.cas.user);    const username = req.session.cas.user;    req.session.loggedIn = true;    req.session.username = username;    // ...    //return next();    // Great, we logged in, now redirect back to the home page.    //return res.send('
You are logged in.
');    return res.send('
You are logged in. Your username is ' + req.session.cas.user + '. Log Out
');});app.listen(3000);