js登陆切换

// 假设我们有一个用户列表，点击某个用户会触发登录切换
const users = [
  { id: 1, name: 'UserA', token: 'token_for_user_a' },
  { id: 2, name: 'UserB', token: 'token_for_user_b' }
];

function switchUser(userId) {
  const user = users.find(u => u.id === userId);
  if (user) {
    localStorage.setItem('currentUserToken', user.token);
    alert(`Switched to ${user.name}`);
    // 刷新页面或更新UI以反映新的登录状态
    location.reload();
  } else {
    alert('User not found');
  }
}

const express = require('express');
const jwt = require('jsonwebtoken');
const app = express();

app.use(express.json());

app.post('/switch-user', (req, res) => {
  const { userId } = req.body;
  // 验证用户ID并获取对应的Token
  const userToken = getUserTokenFromDatabase(userId); // 假设这是从数据库获取Token的函数
  if (userToken) {
    res.json({ success: true, token: userToken });
  } else {
    res.status(404).json({ success: false, message: 'User not found' });
  }
});

function getUserTokenFromDatabase(userId) {
  // 这里应该是查询数据库的逻辑
  // 返回对应用户的Token
}

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