支付凭证优化

backend/application/common/service/EasyWeChatService.php

@@ -31,6 +31,8 @@ class EasyWeChatService
         $this->app = new MiniAppApplication([
             'app_id' => $this->config['app_id'],
             'secret' => $this->config['secret'],
+            // 稳定版凭证重复获取不会把上一张作废。旧接口并发刷新会返回 40001
+            'use_stable_access_token' => true,
             'http'  => ['throw' => false, 'timeout' => 10.0],
         ]);
 
@@ -46,6 +48,24 @@ class EasyWeChatService
         ]);
     }
 
+    /**
+     * 刷新小程序 access_token。普通刷新不会使有效凭证失效；force 只在微信返回凭证无效时使用
+     * @param bool $force
+     * @return string
+     */
+    public function refreshMiniAccessToken($force = false)
+    {
+        $accessToken = $this->app->getAccessToken();
+        if ($force && method_exists($accessToken, 'getStableAccessToken')) {
+            return $accessToken->getStableAccessToken(true);
+        }
+        if ($accessToken instanceof \EasyWeChat\Kernel\Contracts\RefreshableAccessToken) {
+            return $accessToken->refresh();
+        }
+
+        return '';
+    }
+
     /**
      * 小程序登录(code2session)
      * @param string $code wx.login 获取的 code

backend/application/common/service/VirtualPayService.php

@@ -384,6 +384,33 @@ class VirtualPayService
         if ($body === false) {
             throw new \Exception('虚拟支付参数编码失败');
         }
+        $service = new EasyWeChatService();
+        $result = self::requestXpay($service, $uri, $body, $sessionKey);
+        $errcode = (int)($result['errcode'] ?? 0);
+        // 40001 凭证不是最新，42001 凭证过期。刷新后只重试一次
+        if ($errcode === 40001 || $errcode === 42001) {
+            Log::info('虚拟支付 access_token 失效，刷新后重试 ' . $uri);
+            $service->refreshMiniAccessToken(true);
+            $result = self::requestXpay($service, $uri, $body, $sessionKey);
+        }
+        Log::info('虚拟支付请求 ' . $uri . ' ' . json_encode([
+            'payload' => $payload,
+            'res' => $result,
+        ], JSON_UNESCAPED_UNICODE));
+
+        return is_array($result) ? $result : [];
+    }
+
+    /**
+     * @param EasyWeChatService $service
+     * @param string $uri
+     * @param string $body
+     * @param string $sessionKey
+     * @return array
+     * @throws \Exception
+     */
+    private static function requestXpay(EasyWeChatService $service, $uri, $body, $sessionKey)
+    {
         // access_token 由小程序 HTTP 客户端自动附在 query 上，不参与 pay_sig
         $query = [
             'pay_sig' => hash_hmac('sha256', $uri . '&' . $body, self::appKey()),
@@ -392,7 +419,6 @@ class VirtualPayService
             $query['signature'] = hash_hmac('sha256', $body, $sessionKey);
         }
         try {
-            $service = new EasyWeChatService();
             $response = $service->app->getClient()->post($uri, [
                 'query' => $query,
                 'headers' => ['Content-Type' => 'application/json'],
@@ -403,10 +429,6 @@ class VirtualPayService
             Log::error('虚拟支付请求异常 ' . $uri . ' ' . $e->getMessage());
             throw new \Exception('虚拟支付请求失败');
         }
-        Log::info('虚拟支付请求 ' . $uri . ' ' . json_encode([
-            'payload' => $payload,
-            'res' => $result,
-        ], JSON_UNESCAPED_UNICODE));
 
         return is_array($result) ? $result : [];
     }