js 中给session赋值

// 前端JavaScript代码
function login(username, password) {
    fetch('/login', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json'
        },
        body: JSON.stringify({ username, password })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            alert('登录成功！');
        } else {
            alert('登录失败，请检查用户名和密码。');
        }
    })
    .catch(error => console.error('Error:', error));
}

const express = require('express');
const session = require('express-session');
const app = express();

app.use(express.json());
app.use(session({
    secret: 'your_secret_key',
    resave: false,
    saveUninitialized: true,
    cookie: { secure: false } // 如果使用HTTPS，应设置为true
}));

app.post('/login', (req, res) => {
    const { username, password } = req.body;
    // 这里应该有验证用户名和密码的逻辑
    if (username === 'admin' && password === 'password') {
        req.session.user = { username };
        res.json({ success: true });
    } else {
        res.json({ success: false });
    }
});

app.listen(3000, () => console.log('Server running on port 3000'));