49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
import requests
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from django.core.cache import cache
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from .models import WeChatPayConfig
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import logging
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logger = logging.getLogger(__name__)
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def get_access_token(config=None):
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"""
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获取微信接口调用凭证 (client_credential)
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"""
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# 尝试从缓存获取
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cache_key = 'wechat_access_token'
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if config:
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cache_key = f'wechat_access_token_{config.app_id}'
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token = cache.get(cache_key)
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if token:
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return token
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if not config:
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# 优先查找指定 AppID
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config = WeChatPayConfig.objects.filter(app_id='wxdf2ca73e6c0929f0').first()
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if not config:
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config = WeChatPayConfig.objects.filter(is_active=True).first()
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if not config or not config.app_id or not config.app_secret:
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logger.error("No active WeChatPayConfig found or missing app_id/app_secret")
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return None
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url = f"https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={config.app_id}&secret={config.app_secret}"
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try:
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response = requests.get(url, timeout=10)
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data = response.json()
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if 'access_token' in data:
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token = data['access_token']
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expires_in = data.get('expires_in', 7200)
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# 缓存 Token，留出 200 秒缓冲时间
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cache.set(cache_key, token, expires_in - 200)
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return token
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else:
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logger.error(f"获取 AccessToken 失败: {data}")
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except Exception as e:
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logger.error(f"获取 AccessToken 异常: {str(e)}", exc_info=True)
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return None
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