多支付
原理
1.利用鸭子类型。规定前台传过来支付方式。pay_methon
2.再支付方式里面实现pay(名字统一)方法
3.回调函数,在支付方式里面写notify(名字统一)统一方法,返回的data统一格式。
eg: data={"statu":'success',"order_id":notity_data['order_id'],"print":"0000"}
这样的的牛逼之处:我们在修改、添加支付方式的时候,只需要按照鸭子类型,命名一样的函数名,写好自己的支付方式即可。不需要改其他的代码
多支付接口代码
urls.py:
1
2
|
path( "order/create" ,order.Creat.as_view()), path( "order/notify/<paymethod>" ,order.Notify.as_view()) |
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
|
# 这里所有的支付都是走的小程序微信支付: import importlib class Creat(APIView): ...伪代码 pay_methon = "Wxpay" # 如果是PC端,可以前台传过来支付方式 try : #pay_file是对象 pay_file = importlib.import_module(f "app01.Pay.{pay_methon}" ) # 调用对应的支付方式 pay_class = getattr (pay_file, pay_methon) # 反射机制 order_data[ 'open_id' ] = openid # 传的参数 order_data[ 'ip' ] = host_ip # 传的参数 data = pay_class().pay(order_data) # 调用支付 except : return Response({ "code" : 201 , "msg" : "未知支付方式" }) # 异步回调的 class Notify(APIView): def post( self ,request,paymethod): pay_file = importlib.import_module(f "app01.Pay.{paymethod}" ) pay_class = getattr (pay_file,paymethod) data = pay_class().notify(request.data) # 调用异步回调 # 判断data数据中属性,然后修改订单 if data[ "statu" ] = = "success" : models.Order.objects. filter (order_id = data[ 'order_id' ]).update(pay_status = 1 ) return Response(data[ "print" ]) |
支付方式代码
Alipay支付
1
2
3
4
5
6
7
8
9
10
|
# Alipay支付 class Alipay: def pay( self ,order_data): #统一下单方法 pass def notify( self ,notity_data): if notity_data[ 'success' ] : #notity_data['order_id']表示商城订单号 data = { "statu" : 'success' , "order_id" :notity_data[ 'order_id' ], "print" : "0000" } return data |
YLpay支付方式
1
2
3
4
5
6
7
8
|
# YLpay支付方式 class YLpay: def pay( self ,order_data): pass def notify( self ,request_data): #验签 #数据处理 pass |
Wxpay支付方式
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
import time from app01.wx import settings class Wxpay: def pay( self ,order_data): self .order_id = order_data[ "order_id" ] self .open_id = order_data[ 'open_id' ] self .ip = order_data[ 'ip' ] data_body = self .get_body_data() import requests url = "https://api.mch.weixin.qq.com/pay/unifiedorder" response = requests.post(url, data_body.encode( "utf-8" ), headers = { 'content-type' : "application/xml" }) res_dict = self .xml_to_dic(response.content) timeStamp = str ( int (time.time())) paySign = self .get_pay_sign(res_dict, timeStamp) data_dic = { 'timeStamp' : timeStamp, 'nonceStr' : res_dict[ 'nonce_str' ], 'package' : f "prepay_id={res_dict['prepay_id']}" , 'signType' : 'MD5' , "paySign" : paySign, } return data_dic def get_pay_sign( self , res_dict, timeStamp): data_dic = { 'appId' : res_dict[ 'appid' ], 'timeStamp' : timeStamp, 'nonceStr' : res_dict[ 'nonce_str' ], 'package' : f "prepay_id={res_dict['prepay_id']}" , "signType" : "MD5" } sign_str = "&" .join([f "{k}={data_dic[k]}" for k in sorted (data_dic)]) sign_str = f "{sign_str}&key={settings.pay_apikey}" import hashlib md5 = hashlib.md5() md5.update(sign_str.encode( "utf-8" )) sign = md5.hexdigest() return sign.upper() def xml_to_dic( self , xml_data): import xml.etree.ElementTree as ET ''' xml to dict :param xml_data: :return: ''' xml_dict = {} root = ET.fromstring(xml_data) for child in root: xml_dict[child.tag] = child.text return xml_dict def get_random( self ): import random data = "123456789zxcvbnmasdfghjklqwertyuiopZXCVBNMASDFGHJKLQWERTYUIOP" nonce_str = "".join(random.sample(data, 30 )) return nonce_str def get_sign( self ): data_dic = { "nonce_str" : self .nonce_str, "out_trade_no" : self .out_trade_no, "spbill_create_ip" : self .spbill_create_ip, "notify_url" : self .notify_url, "openid" : self .open_id, "body" : self .body, "trade_type" : "JSAPI" , "appid" : self .appid, "total_fee" : "1" , "mch_id" : self .mch_id } sign_str = "&" .join([f "{k}={data_dic[k]}" for k in sorted (data_dic)]) sign_str = f "{sign_str}&key={settings.pay_apikey}" import hashlib md5 = hashlib.md5() md5.update(sign_str.encode( "utf-8" )) sign = md5.hexdigest() return sign.upper() def get_body_data( self ): self .appid = settings.AppId # openid=self.open_id self .mch_id = str (settings.pay_mchid) self .nonce_str = self .get_random() self .out_trade_no = self .order_id self .spbill_create_ip = self .ip self .notify_url = "https://www.test.com" self .body = "老男孩学费" self .sign = self .get_sign() body_data = f """ <xml> <appid>{self.appid}</appid> <mch_id>{self.mch_id}</mch_id> <nonce_str>{self.nonce_str}</nonce_str> <sign>{self.sign}</sign> <body>{self.body}</body> <out_trade_no>{self.out_trade_no}</out_trade_no> <total_fee>1</total_fee> <spbill_create_ip>{ self.spbill_create_ip}</spbill_create_ip> <notify_url>{self.notify_url}</notify_url> <openid>{self.open_id}</openid> <trade_type>JSAPI</trade_type> </xml>""" return body_data |
Creat下订单
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
from rest_framework.views import APIView from rest_framework.response import Response from app01.wx import wx_login import hashlib ,time from app01 import models from django.core.cache import cache from django.db import transaction from app01.func import function_tool import importlib class Creat(APIView): @transaction .atomic def post( self ,request): #小程序提交给我们的数据 ''' {'token': '0bb2aa1102ca9c8306133b2539c3508b', 'remark': '', 'province': '广东省', 'city': '广州市', 'county': '海珠区', 'address': '新港中路397号', 'phone': '020-81167888', 'name': '张三', 'buy_list': {'2': 1}} ''' param = request.data if param.get( "token" ) and param.get( "buy_list" ): user_cache = cache.get(param[ "token" ]) if user_cache: # 获取ip if request.META.get( "HTTP_X_FORWARDED_FOR" ): host_ip = request.META[ "HTTP_X_FROWARDED_FOR" ] else : host_ip = request.META[ "REMOTE_ADDR" ] openid = user_cache.split( "&" )[ 0 ] #data['openid']+"&"+data["session_key"] user_data = models.Wxuser.objects. filter (openid = openid).first() order_data = { "consignee_mobile" : param[ 'phone' ], 'consignee_name' : param[ 'name' ], 'wxuser_id' : user_data. id , "memo" : param[ 'remark' ], "consignee_area" : f "{param['province']},{param['city']},{param['county']}" , "consignee_address" : param[ 'address' ], "order_id" : function_tool.get_order_id(), "order_total" : 0 } # 1 上面的order_data 出来上面的数据,有些是需要通过购买上面列表做累加才能获得到 # 2 order_item 是通过buy_list里面的商品列表,一个键值对就是一条记入'buy_list': {'2': 1,“1”:2} # 3 再每一次增加一个order_item的时候,我们都需要校验库存。如果有一个商品的库存不足,我们就应该不然用户下单 # 4 由于第三步中进行多次增加,如果再后面的的商品库存有问题,我们不让他下单,但是前面的数据已经插入。 # 所有我们要用数据库的事务管理数据的统一。就算order_item没有问题,order_data,插入的时候,也可能出错,所以也要用事务 # 5 由于并发问题,所有的用户都会对数据的库存进行加减,所以我们这里再校验库存的时候要用锁。 buy_list = param.get( "buy_list" ) # 获取到buy_list是没有商品信息只有有id,我们先把buy_list中的所有商品查出来 goods_key = list (buy_list.keys()) all_product = models.Product.objects. filter (product_id__in = goods_key) #用for循环添加order_item sid = transaction.savepoint() for product in all_product: # 将product.product_id 转字符串,为了通过product.product_id在buy_list获取商品的购买数量 product.product_id = str (product.product_id) # 获取订单总金额 order_data[ 'order_total' ] + = product.price * buy_list[product.product_id] for i in range ( 3 ): #先查库存,重新查库的 stock = product.stock.quantity #当前的库存的库存数量,减去购买数量,是否大于0 new_stock = stock - buy_list[product.product_id] if new_stock < 0 : #库存不足,回滚 transaction.savepoint_rollback(sid) return Response({ "code" : 201 , "msg" : f "{product.name}库存不足" }) #乐观锁 res = models.Stock.objects. filter (quantity = stock,stock_id = product.stock.stock_id).update(quantity = new_stock) if not res: if i = = 2 : transaction.savepoint_rollback(sid) return Response({ "code" : 201 , "msg" : "创建订单失败" }) else : continue else : break #获取购买数量 new_buy_cout = product.buy_count + buy_list[product.product_id] models.Product.objects. filter (product_id = product.product_id).update(buy_count = new_buy_cout) #组织order_item的数据 order_item_data = { 'order_id' : order_data[ 'order_id' ], 'product_id' : product.product_id, "name" : product.name, "image" : product.image, "price" : product.price, "nums" : buy_list[product.product_id], "brief" : product.brief } models.Order_items.objects.create( * * order_item_data) models.Order.objects.create( * * order_data) transaction.savepoint_commit(sid) #所有的支付都是走的小程序微信支付: pay_methon = "Wxpay" try : #pay_file是对象 pay_file = importlib.import_module(f "app01.Pay.{pay_methon}" ) pay_class = getattr (pay_file, pay_methon) order_data[ 'open_id' ] = openid order_data[ 'ip' ] = host_ip data = pay_class().pay(order_data) except : return Response({ "code" : 201 , "msg" : "未知支付方式" }) # 1对接小程序支付 # 2 我们要用celery去定时检查,该订单在指定时间内用没有支付,没有支付,取消订单,回滚库存 function_tool.pay_status(order_data[ 'order_id' ]) return Response({ "code" : 200 , "msg" : "ok" , "data" :data}) else : return Response({ "code" : 201 , "msg" : "无效的token" }) else : return Response({ "code" : 202 , "msg" : "缺少参数" }) class Notify(APIView): def post( self ,request,paymethod): pay_file = importlib.import_module(f "app01.Pay.{paymethod}" ) pay_class = getattr (pay_file,paymethod) data = pay_class().notify(request.data) # 判断data数据中属性,然后修改订单 if data[ "statu" ] = = "success" : models.Order.objects. filter (order_id = data[ 'order_id' ]).update(pay_status = 1 ) return Response(data[ "print" ]) |
以上就是python实现微信小程序的多种支付方式的详细内容,更多关于python微信支付方式的资料请关注服务器之家其它相关文章!
原文链接:https://www.cnblogs.com/guyouyin123/p/12663537.html