thinkphp8.1 调用巨量广告API接口，刷新token

1、在mysql中建立表sys_token;

CREATE TABLE `sys_token` (
  `id` int UNSIGNED NOT NULL,
  `access_token` varchar(50) COLLATE utf8mb4_general_ci NOT NULL,
  `expires_in` timestamp NOT NULL,
  `refresh_token` varchar(50) COLLATE utf8mb4_general_ci NOT NULL,
  `refresh_token_expires_in` timestamp NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci COMMENT='API token';

备注：expires_in\refresh_token_expires_in 巨量引擎返回的是纯数字，单位：秒，需要你在tp里转换成年月日时分秒；

2、第一次获取令牌时，官方会给你auth_code,你根据你的app_id,secret,auth_code获取令牌，并存入database中；

3、由于令牌的有效期是1天，刷新令牌有效期是30天；令牌过期了需要刷新令牌；

use think\response\Json;
use think\facade\Db;
use GuzzleHttp\Client;
use GuzzleHttp\Exception\RequestException;
use DateTime;

class Index
{
    // 去掉 readonly 修饰符，因为需要在刷新 token 后修改它
    protected string $accessToken;
    
    public function __construct()
    {
        $data = Db::name('sys_token')->find(1);
        $expired_time = $data['expires_in']; // accessToken的过期时间
        $isExpired = (new DateTime() > new DateTime($expired_time));  // 判断是否过期
        if ($isExpired) {
            $this->getRefreshToken($data['refresh_token']); // 过期了刷新令牌
        } else {
            $this->accessToken = $data['access_token'];  // 已存在的 accessToken
        }
    }
    
    public function index(): string
    {
        // 在调用任意接口时，需要有访问令牌;
        return $this->accessToken;
    }
    
    public function getRefreshToken(string $refreshToken): Json
    {
        $client = new Client();
        $headers = [
            'Content-Type' => 'application/json',
        ];
        
        // 请求体数据
        $body = [
            'app_id' => '你的app_id',
            'secret' => '您的secret',
            'refresh_token' => $refreshToken,
        ];
        
        try {
            // 异步请求
            $response = $client->request('POST', 'https://api.oceanengine.com/open_api/oauth2/refresh_token/', [
                'headers' => $headers,
                'json' => $body,  // 使用 'json' 自动编码为 JSON
            ]);
        
            // 获取响应体并输出
            $responseBody = $response->getBody()->getContents();
            $result = json_decode($responseBody, true);
            
            $data = [
                'id' => 1,
                'access_token' => $result['data']['access_token'],
                'expires_in' => $result['data']['expires_in'],
                'refresh_token' => $result['data']['refresh_token'],
                'refresh_token_expires_in' => $result['data']['refresh_token_expires_in'],
            ];
            Db::name('sys_token')->update($data);

            // 将新获取的 accessToken 更新到实例的属性中
            $this->accessToken = $result['data']['access_token'];  // 使用新的 accessToken
            
            return json(['code' => 0, 'msg' => '刷新token成功']);
        } catch (RequestException $e) {
            // 错误处理
            return json(['code' => 1, 'msg' => $e->getMessage()]);
        }
    }
}

测试环境：centOS stream 9、php8.3、thinkphp8.1; 欢迎大家指正........