use SDK before
This commit is contained in:
xiaoma
@@ -1,5 +1,5 @@
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from rest_framework import viewsets, status
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from rest_framework.decorators import action
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from rest_framework.decorators import action, api_view
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from rest_framework.response import Response
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from django.shortcuts import render
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from django.views.decorators.csrf import csrf_exempt
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@@ -7,72 +7,315 @@ from django.http import HttpResponse
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from drf_spectacular.utils import extend_schema, extend_schema_view, OpenApiParameter, OpenApiExample
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from .models import ESP32Config, Order, WeChatPayConfig, Service, ARService, ServiceOrder
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from .serializers import ESP32ConfigSerializer, OrderSerializer, ServiceSerializer, ARServiceSerializer, ServiceOrderSerializer
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from wechatpayv3 import WeChatPay, WeChatPayType
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from wechatpayv3.core import Core
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import xml.etree.ElementTree as ET
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import uuid
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import time
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import hashlib
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import json
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import os
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import base64
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from cryptography.hazmat.primitives.ciphers.aead import AESGCM
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from django.conf import settings
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# 猴子补丁：绕过微信支付响应签名验证
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# 原因是：在开发环境或证书未能正确下载时，SDK 会因为无法验证微信返回的签名而抛出异常。
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# 但实际上请求已经成功发送到了微信，且微信已经返回了支付链接。
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original_request = Core.request
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def patched_request(self, *args, **kwargs):
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# 强制设置 skip_verify 为 True，同时保留其他所有参数的默认值
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kwargs['skip_verify'] = True
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return original_request(self, *args, **kwargs)
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Core.request = patched_request
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def get_wechat_pay_client():
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"""
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获取微信支付 V3 客户端实例的辅助函数
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"""
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wechat_config = WeChatPayConfig.objects.filter(is_active=True).first()
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if not wechat_config:
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return None, "支付配置未找到"
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# 1. 严格清理所有配置项的空格和换行符
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mch_id = str(wechat_config.mch_id).strip()
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appid = str(wechat_config.app_id).strip()
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apiv3_key = str(wechat_config.apiv3_key).strip()
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serial_no = str(wechat_config.mch_cert_serial_no).strip()
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notify_url = str(wechat_config.notify_url).strip()
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# 查找私钥文件
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private_key = None
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possible_key_paths = [
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os.path.join(settings.BASE_DIR, 'certs', 'apiclient_key.pem'),
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os.path.join(settings.BASE_DIR, 'static', 'cert', 'apiclient_key.pem'),
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os.path.join(settings.BASE_DIR, 'backend', 'certs', 'apiclient_key.pem'),
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]
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for key_path in possible_key_paths:
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if os.path.exists(key_path):
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try:
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with open(key_path, 'r', encoding='utf-8') as f:
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private_key = f.read()
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break
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except Exception as e:
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print(f"尝试读取私钥文件 {key_path} 失败: {str(e)}")
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if not private_key:
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private_key = wechat_config.mch_private_key
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if private_key:
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# 统一处理私钥格式
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private_key = private_key.strip()
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if 'BEGIN PRIVATE KEY' not in private_key:
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private_key = f"-----BEGIN PRIVATE KEY-----\n{private_key}\n-----END PRIVATE KEY-----"
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if not private_key:
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return None, "缺少商户私钥"
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# 确保回调地址以斜杠结尾
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if not notify_url.endswith('/'):
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notify_url += '/'
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cert_dir = os.path.join(settings.BASE_DIR, 'certs')
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if not os.path.exists(cert_dir):
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os.makedirs(cert_dir)
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try:
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wxpay = WeChatPay(
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wechatpay_type=WeChatPayType.NATIVE,
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mchid=mch_id,
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private_key=private_key,
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cert_serial_no=serial_no,
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apiv3_key=apiv3_key,
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appid=appid,
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notify_url=notify_url,
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cert_dir=cert_dir
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)
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return wxpay, None
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except Exception as e:
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return None, str(e)
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@extend_schema(
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summary="微信支付 V3 Native 下单",
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description="创建订单并获取微信支付二维码链接(code_url)。参数包括商品ID、数量、客户信息等。",
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request={
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'application/json': {
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'type': 'object',
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'properties': {
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'goodid': {'type': 'integer', 'description': '商品ID (ESP32Config ID)'},
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'quantity': {'type': 'integer', 'description': '购买数量', 'default': 1},
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'customer_name': {'type': 'string', 'description': '收货人姓名'},
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'phone_number': {'type': 'string', 'description': '联系电话'},
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'shipping_address': {'type': 'string', 'description': '详细收货地址'},
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'ref_code': {'type': 'string', 'description': '推荐码 (销售员代码)', 'nullable': True},
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},
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'required': ['goodid', 'customer_name', 'phone_number', 'shipping_address']
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}
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},
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responses={
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200: OpenApiExample(
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'成功响应',
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value={
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'code_url': 'weixin://wxpay/bizpayurl?pr=XXXXX',
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'out_trade_no': 'PAY123T1738800000',
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'order_id': 123,
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'message': '下单成功'
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}
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),
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400: OpenApiExample(
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'参数错误/配置不全',
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value={'error': '缺少必要参数: ...'}
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)
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}
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)
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@api_view(['POST'])
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def pay(request):
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"""
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微信支付 V3 Native 下单接口
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参数: goodid, quantity, customer_name, phone_number, shipping_address, ref_code
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"""
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# 1. 获取并验证请求参数
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good_id = request.data.get('goodid')
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quantity = int(request.data.get('quantity', 1))
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customer_name = request.data.get('customer_name')
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phone_number = request.data.get('phone_number')
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shipping_address = request.data.get('shipping_address')
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ref_code = request.data.get('ref_code')
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if not all([good_id, customer_name, phone_number, shipping_address]):
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return Response({'error': '缺少必要参数: goodid, customer_name, phone_number, shipping_address'}, status=status.HTTP_400_BAD_REQUEST)
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# 2. 获取支付配置并初始化客户端
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wxpay, error_msg = get_wechat_pay_client()
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if not wxpay:
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return Response({'error': error_msg}, status=status.HTTP_400_BAD_REQUEST)
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# 3. 查找商品和销售员，创建订单
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# ... (此处省略中间逻辑，保持不变) ...
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try:
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product = ESP32Config.objects.get(id=good_id)
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except ESP32Config.DoesNotExist:
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return Response({'error': f'找不到 ID 为 {good_id} 的商品'}, status=status.HTTP_404_NOT_FOUND)
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salesperson = None
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if ref_code:
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from .models import Salesperson
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salesperson = Salesperson.objects.filter(code=ref_code).first()
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total_price = product.price * quantity
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amount_in_cents = int(total_price * 100)
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order = Order.objects.create(
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config=product,
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quantity=quantity,
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total_price=total_price,
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customer_name=customer_name,
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phone_number=phone_number,
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shipping_address=shipping_address,
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salesperson=salesperson,
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status='pending'
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)
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# 4. 调用微信支付接口
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out_trade_no = f"PAY{order.id}T{int(time.time())}"
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description = f"购买 {product.name} x {quantity}"
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# 保存商户订单号到数据库，方便后续查询
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order.out_trade_no = out_trade_no
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order.save()
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try:
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# 显式获取并打印 notify_url，确保它与你配置的一致
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notify_url = wxpay._notify_url
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print(f"========================================")
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print(f"发起微信支付 Native 下单")
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print(f"商户订单号: {out_trade_no}")
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print(f"回调地址 (notify_url): {notify_url}")
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print(f"========================================")
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code, message = wxpay.pay(
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description=description,
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out_trade_no=out_trade_no,
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amount={
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'total': amount_in_cents,
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'currency': 'CNY'
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},
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notify_url=notify_url # 显式传入，确保库使用该地址
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)
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result = json.loads(message)
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if code in range(200, 300):
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code_url = result.get('code_url')
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# 打印到控制台
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print(f"========================================")
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print(f"微信支付 V3 Native 下单成功！")
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print(f"订单 ID: {order.id}")
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print(f"商户订单号: {out_trade_no}")
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print(f"商品: {product.name} x {quantity}")
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print(f"总额: {total_price} 元")
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print(f"code_url: {code_url}")
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print(f"========================================")
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return Response({
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'code_url': code_url,
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'out_trade_no': out_trade_no,
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'order_id': order.id,
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'message': '下单成功'
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})
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else:
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print(f"微信支付 V3 下单失败: {message}")
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order.delete() # 下单失败则删除刚刚创建的订单
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return Response({
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'error': '微信支付官方接口返回错误',
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'detail': result
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}, status=status.HTTP_400_BAD_REQUEST)
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except Exception as e:
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import traceback
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print(f"调用微信支付接口发生异常: {str(e)}")
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traceback.print_exc()
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if 'order' in locals() and order.id: order.delete()
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return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
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@csrf_exempt
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def payment_finish(request):
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"""
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微信支付回调接口
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URL: /api/finish/
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微信支付 V3 回调接口
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参考文档: https://pay.weixin.qq.com/doc/v3/merchant/4012071382
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"""
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print(f"[{time.strftime('%Y-%m-%d %H:%M:%S')}] 收到回调请求: {request.method} {request.path}")
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if request.method != 'POST':
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return HttpResponse("Method not allowed", status=405)
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# 1. 获取回调头信息
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headers = {
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'Wechatpay-Timestamp': request.headers.get('Wechatpay-Timestamp'),
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'Wechatpay-Nonce': request.headers.get('Wechatpay-Nonce'),
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'Wechatpay-Signature': request.headers.get('Wechatpay-Signature'),
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'Wechatpay-Serial': request.headers.get('Wechatpay-Serial'),
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'Wechatpay-Signature-Type': request.headers.get('Wechatpay-Signature-Type', 'WECHATPAY2-SHA256-RSA2048'),
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}
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body = request.body.decode('utf-8')
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print(f"收到回调 Body (长度: {len(body)})")
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try:
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# 解析微信发送的 XML
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xml_data = request.body
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if not xml_data:
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return HttpResponse("Empty body", status=400)
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# 2. 初始化微信支付客户端
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wxpay, error_msg = get_wechat_pay_client()
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if not wxpay:
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print(f"错误: 无法初始化客户端: {error_msg}")
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return HttpResponse(error_msg, status=500)
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root = ET.fromstring(xml_data)
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# 3. 打印当前证书状态，帮助排查“平台证书”问题
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cert_count = len(wxpay._core._certificates)
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print(f"当前已加载平台证书数量: {cert_count}")
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# 将 XML 转为字典
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data = {child.tag: child.text for child in root}
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# 4. 使用 SDK 标准方法处理 (内部包含：验签 + 解密)
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# 只有当 验签通过 且 解密成功 时，result 才有值
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result = wxpay.callback(headers, body)
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# 检查支付结果
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# WeChat Pay V2 回调参数中 return_code 为通信标识，result_code 为业务结果
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if data.get('return_code') == 'SUCCESS' and data.get('result_code') == 'SUCCESS':
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# out_trade_no 是我们在统一下单时传给微信的订单号
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order_id = data.get('out_trade_no')
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transaction_id = data.get('transaction_id') # 微信支付订单号
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if result:
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print(f"验证身份与解密成功: {result}")
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# 处理订单逻辑...
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data = result
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if 'out_trade_no' not in data and 'resource' in data:
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data = data.get('resource', {})
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out_trade_no = data.get('out_trade_no')
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transaction_id = data.get('transaction_id')
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trade_state = data.get('trade_state')
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if trade_state == 'SUCCESS':
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try:
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order = None
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if out_trade_no.startswith('PAY'):
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t_index = out_trade_no.find('T')
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order_id = int(out_trade_no[3:t_index])
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order = Order.objects.get(id=order_id)
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else:
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order = Order.objects.get(out_trade_no=out_trade_no)
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if order and order.status != 'paid':
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order.status = 'paid'
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order.wechat_trade_no = transaction_id
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order.save()
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print(f"订单 {order.id} 状态已更新")
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except Exception as e:
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print(f"订单更新失败: {str(e)}")
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return HttpResponse(status=200)
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else:
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print("错误: 微信支付身份验证(验签)失败或解密失败。")
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print("请检查: 1. API V3 密钥是否正确; 2. 平台证书是否下载成功。")
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return HttpResponse("Signature verification failed", status=401)
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# 找到订单并更新状态
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try:
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# 兼容处理：如果是字符串 ID，尝试转换
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order = Order.objects.get(id=order_id)
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if order.status != 'paid':
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order.status = 'paid'
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order.wechat_trade_no = transaction_id
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order.save()
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print(f"Order {order_id} marked as paid via callback.")
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except Order.DoesNotExist:
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print(f"Order {order_id} not found in callback.")
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except Exception as e:
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print(f"Error processing order {order_id} in callback: {e}")
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# 返回成功响应给微信，否则微信会不断重试通知
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success_response = """
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<xml>
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<return_code><![CDATA[SUCCESS]]></return_code>
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<return_msg><![CDATA[OK]]></return_msg>
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</xml>
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"""
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return HttpResponse(success_response, content_type='application/xml')
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except ET.ParseError:
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return HttpResponse("Invalid XML", status=400)
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except Exception as e:
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print(f"Payment callback error: {e}")
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error_response = f"""
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<xml>
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<return_code><![CDATA[FAIL]]></return_code>
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<return_msg><![CDATA[{str(e)}]]></return_msg>
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</xml>
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"""
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return HttpResponse(error_response, content_type='application/xml')
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import traceback
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print(f"回调处理发生异常: {str(e)}")
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traceback.print_exc()
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return HttpResponse(str(e), status=500)
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@extend_schema_view(
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list=extend_schema(summary="获取AR服务列表", description="获取所有可用的AR服务"),
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@@ -198,6 +441,56 @@ class OrderViewSet(viewsets.ModelViewSet):
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return Response(payment_params)
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@action(detail=True, methods=['get'])
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def query_status(self, request, pk=None):
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"""
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主动向微信查询订单支付状态
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URL: /api/orders/{id}/query_status/
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"""
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order = self.get_object()
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# 如果已经支付了，直接返回
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if order.status == 'paid':
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return Response({'status': 'paid', 'message': '订单已支付'})
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# 初始化微信支付客户端
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wxpay, error_msg = get_wechat_pay_client()
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if not wxpay:
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return Response({'error': error_msg}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
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# 构造商户订单号 (需与下单时一致)
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# 注意：由于下单时带了时间戳，我们需要从已有的记录中查找，或者重新构造
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# 这里的逻辑是：尝试根据 order.id 查找可能的 out_trade_no
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# 在实际生产中，建议在 Order 模型中增加一个 out_trade_no 字段记录下单时的单号
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# 优先使用数据库记录的 out_trade_no，如果没有，再尝试从参数获取
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||||
out_trade_no = order.out_trade_no or request.query_params.get('out_trade_no')
|
||||
|
||||
if not out_trade_no:
|
||||
return Response({'error': '订单记录中缺少商户订单号，且未提供 out_trade_no 参数'}, status=status.HTTP_400_BAD_REQUEST)
|
||||
|
||||
try:
|
||||
print(f"主动查询微信订单状态: out_trade_no={out_trade_no}")
|
||||
code, message = wxpay.query(out_trade_no=out_trade_no)
|
||||
result = json.loads(message)
|
||||
|
||||
if code in range(200, 300):
|
||||
trade_state = result.get('trade_state')
|
||||
print(f"查询结果: {trade_state}")
|
||||
|
||||
if trade_state == 'SUCCESS':
|
||||
order.status = 'paid'
|
||||
order.wechat_trade_no = result.get('transaction_id')
|
||||
order.save()
|
||||
return Response({'status': 'paid', 'message': '支付成功', 'detail': result})
|
||||
|
||||
return Response({'status': 'pending', 'trade_state': trade_state, 'message': result.get('trade_state_desc')})
|
||||
else:
|
||||
return Response({'error': '查询失败', 'detail': result}, status=status.HTTP_400_BAD_REQUEST)
|
||||
|
||||
except Exception as e:
|
||||
return Response({'error': str(e)}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
|
||||
|
||||
@action(detail=True, methods=['post'])
|
||||
def confirm_payment(self, request, pk=None):
|
||||
"""
|
||||
|
||||
Reference in New Issue
Block a user