尝试使用 nodejs、express.js 和 mysql 登录 ReactJS 应用程序。此处注册正在工作，但在登录期间出现问题。这是我的登录代码

function Login(){
    const [email, setEmail] = useState('');
    const [pass, setPass] = useState('');
    const navigate = useNavigate();
    
    const login = () => {
        Axios.post("http://localhost:3001/api/login", {
            email: email,
            pass: pass
        }).then(()=>{
            navigate('/info');
        })
    }

    return(

    )
}

export default Login;

服务器js

const express = require('express');
const app = express();
const mysql = require('mysql');
const cors = require('cors');
const { response } = require('express');
const session = require('express-session');
const path = require('path');

const db = mysql.createPool({
    host: 'localhost',
    user: 'root',
    password: '',
    database: 'travel'
});
app.use(cors());

app.use(session({
    secret: 'secret',
    resave: true,
    saveUninitialized: true
}));
app.use(express.json());
app.use(express.urlencoded({extended: true}))

//Login
app.post("/api/login", (req,res)=> {
    const email = req.body.email;
    const pass = req.body.pass;

    if(email && pass){
        db.query('SELECT * FROM users WHERE email = ? AND pass = ?', [email, pass],(err, result) => {
            if(err) throw err;
            if(result.lenght > 0){
                req.session.loggedin = true;
                req.session.email = email;
                response.redirect('/info');
            }else{
                response.send('Incorrect email and/or password!');
            }
            response.end();
        });
    }else{
        response.send('Please enter email and password');
        response.end();
    }

});

app.listen(3001, ()=>{
    console.log('running on port 3001');
});

我试着用其他方法来解决这个问题。但无法解决这个问题。它在注册时工作。但不适用于登录。