【发布时间】：2022-01-14 22:25:10
【问题描述】：
我在 express 会话中遇到了一些问题。 当我登录时，我将 session.uid session.user 和 session.isAuth 设置为其参数。 当我单击需要会话信息的其他一些方面时。它有时有效，有时无效。有时我得到“用户”未定义的错误.... 我有这个代码。当我在 editQuestion 上单击示例时，我得到了错误。当我在'/'路线中执行console.log时，它可以工作。 有人可以告诉我我在这里缺少什么吗？
var express = require("express");
const session = require("express-session");
const cookieParser = require("cookie-parser");
const flush = require("connect-flash");
var path = require("path");
const w2v = require("word2vec");
const port = 3000;
const background = require("./public/js/background.js")
const datahandler = require("./public/js/data_handling.js")
//var routes = require("./routes");
var app = express();
app.set("port", process.env.PORT || 3000);
app.set("views", path.join(__dirname, "public/html"));
//app.set("view engine", "ejs");
app.engine('html', require('ejs').renderFile);
app.use(express.static(path.join(__dirname, 'public')));
app.use(cookieParser());
app.use(session({
cookie:{maxAge:60000},
resave: false,
saveUninitialized: false,
secret: "secret"
}));
//app.use(flush());
//Bodyparser
app.use(express.urlencoded({extended:true}));
const isAuth = (req, res, next)=>{
if(req.session.isAuth){
next();
}else{
res.redirect("/login");
}
}
app.get("/", function(req, res) {
res.render("index.html");
});
app.get("/question", function(req,res){
var Qid = Number(req.query.id)
})
app.get("/search", function(req,res){
var searchWords = req.query.search.split(' ');
w2v.loadModel('public/data/word_vectors.txt', (error, model) =>{
var word_vectors = model.getVectors(searchWords)
var avg_vector = background.averageVectors(word_vectors, model);
var questions = background.mostSimilarQuestions('/../data/qentities.txt', avg_vector);
var resultjson = datahandler.getQuestionsFromSimilar(questions);
res.json(resultjson)
})
});
app.get("/search/new", function(req,res){
var resultjson = datahandler.getNewestQuestions();
//console.log(resultjson);
res.json(resultjson);
});
app.get("/LogIn", function(req, res){
console.log(req.session.user);
res.render("LogIn.html");
})
app.post("/logIn",async(req, res) =>{
//LogIn
const{username, password} = req.body;
const user = datahandler.logIn(username, password);
if(!user){
return res.send("Log In failed!")
}else{
req.session.uid = user[0];
req.session.user = user[1];
req.session.isAuth = true;
req.session.save();
res.redirect("/");
}
});
app.get("/user",isAuth, (res, req)=>{
//res.send(req.session.user);
//res.json(req.session.user)
res.redirect("Profil.html");//Doesn't work ;(
});
app.get("/editQuestion", isAuth,(res, req)=>{
//console.log(req.session.user); Not working here. WHY?????
res.render("editQuestion.html");
});
app.get("/viewQuestion", isAuth,(res, req)=>{
console.log(req.session.user);
res.render("viewQuestion.html");
});
app.get('/logout',function(req,res){
console.log(req.session);
req.session.destroy(function(err) {
if(err) {
console.log(err);
} else {
res.redirect('/');
}
});
});
app.get("/Register", function(req,res){
res.render("Register.html")
})
app.post("/register", async(req,res)=>{
const{newUsername, password} = req.body;
const newuser = datahandler.registerNewUser(newUsername, password);
if(!newuser){
res.redirect("/Register");
}
else{
res.redirect("/");
}
})
app.get("/about", function(req, res) {
res.render("about.html");
});
app.all('*',(req,res)=>{
res.status(404).render('404.html');
});
app.listen(app.get("port"), function() {
console.log(`Example app listening at http://localhost:${port}`);
});
这是我点击编辑问题时得到的结果：
TypeError: Cannot read property 'user' of undefined
而这在'/'中什么是正确的：
TP
【问题讨论】：