80 lines
3.3 KiB
Python
80 lines
3.3 KiB
Python
from alipay import AliPay
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from flask import current_app
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import os
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import logging
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logger = logging.getLogger(__name__)
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class AlipayService:
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def __init__(self):
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self.app_id = current_app.config.get('ALIPAY_APP_ID')
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self.private_key = current_app.config.get('ALIPAY_APP_PRIVATE_KEY')
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self.public_key = current_app.config.get('ALIPAY_PUBLIC_KEY')
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self.return_url = current_app.config.get('ALIPAY_RETURN_URL')
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self.notify_url = current_app.config.get('ALIPAY_NOTIFY_URL')
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self.debug = current_app.config.get('ALIPAY_DEBUG', True)
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def get_alipay_client(self):
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"""获取支付宝客户端实例"""
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return AliPay(
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appid=self.app_id,
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app_notify_url=self.notify_url,
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app_private_key_string=self.private_key,
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alipay_public_key_string=self.public_key,
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sign_type="RSA2",
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debug=self.debug
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)
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def create_order_url(self, out_trade_no, total_amount, subject):
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"""生成支付链接 (电脑网站支付)"""
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alipay = self.get_alipay_client()
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order_string = alipay.api_alipay_trade_page_pay(
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out_trade_no=out_trade_no,
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total_amount=str(total_amount),
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subject=subject,
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return_url=self.return_url,
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notify_url=self.notify_url
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)
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# 拼接支付网关 (使用最新的支付宝沙箱域名)
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gateway = "https://openapi-sandbox.dl.alipaydev.com/gateway.do" if self.debug else "https://openapi.alipay.com/gateway.do"
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return f"{gateway}?{order_string}"
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def verify_notify(self, data, signature):
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"""验证通知签名"""
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try:
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if not signature or not data:
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logger.error("签名或数据为空")
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return False
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# 创建数据副本
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verify_data = data.copy()
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# python-alipay-sdk 的 verify 方法会自动处理 sign 的移除
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# 但为了保险，我们手动移除它，保留其他所有字段
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verify_data.pop('sign', None)
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verify_data.pop('sign_type', None)
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alipay = self.get_alipay_client()
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# 对于同步回调，sign_type 实际上是参与签名的（某些版本/接口）
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# 对于异步通知，sign_type 通常不参与签名
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# alipay.verify 会根据情况处理 sign_type
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result = alipay.verify(verify_data, signature)
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if not result:
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logger.error("签名验证失败")
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logger.error(f"待验证数据: {verify_data}")
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logger.error(f"签名值: {signature}")
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logger.error(f"使用的公钥前50位: {self.public_key[:50]}...")
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# 检查公钥是否可能是应用公钥而非支付宝公钥
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if self.private_key and self.public_key:
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logger.warning("提示：如果签名持续验证失败，请确认 ALIPAY_PUBLIC_KEY 是“支付宝公钥”而非“应用公钥”")
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else:
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logger.info("签名验证成功")
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return result
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except Exception as e:
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logger.error(f"验证签名时发生异常: {str(e)}", exc_info=True)
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return False
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