快速会话 无法设置未定义的属性“id”

express session Cannot set property 'id' of undefined

本文关键字：属性 id 未定义 设置 会话      更新时间：2023-09-26
var redis = require('redis');
var router = express.Router();
var mysql = require('mysql');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var client  = redis.createClient();
var session = require('express-session'),
RedisStore = require('connect-redis')(session);
var app = express();
app.use(cookieParser);
app.use(session({
    store : new RedisStore({
    host:'localhost',
    port:7351,
    maxAge: 300000,
    client:client,
    ttl:260
   }
 ),
 secret:'dafdsa',
resave:false,
saveUninitialized:true,
}));
这是我

的设置，这是我的代码

router.post('/', function(req, res, next) {
  var id = req.body.userid;
  var passwd = req.body.password;
  var sess = req.session;
  var login_chk = pool.getConnection(function(err,connection){
      connection.query('SELECT U_passwd FROM Member WHERE U_id = ?',[id],function(err,row,req){
         if(err)console.log(err);
      var sqlpasswd = row[0].U_passwd;
      var answer = 0;
      answer = passwd_chk(passwd,sqlpasswd);
      if(answer ===1){
          save_session(id);
          res.render('main');
      }

var save_session = function(req){
    req.session.id = req; 
}

我将发布（登录）并将ID保存在会话中，但此代码总是错误地无法设置属性...我该如何解决它?...谢谢你的回答

发生这种情况

是因为您将userId作为save_session(req)参数传递。然后，您在您的情况下执行与userId.session.id = userId;相同的req.session.id = req;。该错误会通知您userId没有session属性（痴迷）。您所需要的只是传递req和userId作为参数。像这样更改代码。

router.post('/', function(req, res, next) {
  var id = req.body.userid;
  var passwd = req.body.password;
  var sess = req.session;
  var login_chk = pool.getConnection(function(err,connection){
      connection.query('SELECT U_passwd FROM Member WHERE U_id = ?',[id],function(err,row,req){
         if(err)console.log(err);
      var sqlpasswd = row[0].U_passwd;
      var answer = 0;
      answer = passwd_chk(passwd,sqlpasswd);
      if(answer ===1){
          save_session(req,id);        <--- Change this
          res.render('main');
      }

var save_session = function(req,id){   <--- Change this
    req.session.id = id;               <--- Change this
}

我希望它有所帮助。

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