thinkphp判断登录

<?php
namespace app\index\controller;

use think\Controller;
use think\Request;

class Login extends Controller
{
    public function index(Request $request)
    {
        if ($request->isPost()) {
            $username = $request->post('username');
            $password = $request->post('password');

            // 验证用户名和密码
            if ($username === 'admin' && $password === '123456') {
                // 设置会话
                session('user_id', 1);
                return redirect('/index/index');
            } else {
                return '登录失败';
            }
        }

        return view();
    }

    public function checkLogin()
    {
        if (session('?user_id')) {
            return '已登录';
        } else {
            return '未登录';
        }
    }
}

<?php
namespace app\index\controller;

use think\Controller;
use think\Request;
use Firebase\JWT\JWT;

class Login extends Controller
{
    private $key = 'your_secret_key';

    public function index(Request $request)
    {
        if ($request->isPost()) {
            $username = $request->post('username');
            $password = $request->post('password');

            // 验证用户名和密码
            if ($username === 'admin' && $password === '123456') {
                $token = [
                    'user_id' => 1,
                    'exp' => time() + 3600 // 过期时间 1 小时
                ];
                $jwt = JWT::encode($token, $this->key);
                return json(['token' => $jwt]);
            } else {
                return json(['error' => '登录失败']);
            }
        }

        return view();
    }

    public function checkLogin(Request $request)
    {
        $token = $request->header('Authorization');

        try {
            $decoded = JWT::decode($token, $this->key, ['HS256']);
            return json(['status' => '已登录', 'user_id' => $decoded->user_id]);
        } catch (\Exception $e) {
            return json(['status' => '未登录', 'error' => $e->getMessage()]);
        }
    }
}