支付寶支付流程
阿新 • • 發佈：2018-03-06
port dai 驗證 .py django unsigned utf mage dumps
註意：
保存
支付寶公鑰（通過商戶公鑰生成）
商戶私鑰
settings.py中ALLOWED_HOSTS=["*"]
點擊支付，發送POST請求，提供商品信息及訂單號（唯一標識），根據支付寶SDK的配置，首先發送發送POST請求，進行支付驗證，支付成功後，根據訂單號，修改訂單狀態，失敗則不修改，然後展示支付結果，最後跳轉回設定好的商戶URL頁面
根據當前用戶的配置（支付時發送POST請求的地址（用於驗證支付成功與否），支付完成後跳轉的商戶地址，支付寶公鑰，商戶私鑰），生成URL，並跳轉到掃碼支付頁面。
上面兩個地址相當於回調函數（）
1.項目展示：
2.掃碼支付
3.支付完成
4.跳轉成功
一、註冊賬號
https://openhome.alipay.com/platform/appDaily.htm?tab=info
二、設置應用公鑰
私鑰需要復制到程序裏的：
程序裏面阿裏的公鑰在這裏獲取：
、
這裏放的是阿裏的公鑰。
代碼實現：
代碼結構：
1. 首先是：更改程序裏面的阿裏公鑰和用戶私鑰以及app_id
2.pay.py 這是從git上找到的支付寶支付接口(PC端支付接口)
3、 
1 from datetime import datetime 2 from Crypto.PublicKey import支付函數RSA 3 from Crypto.Signature import PKCS1_v1_5 4 from Crypto.Hash import SHA256 5 from urllib.parse import quote_plus 6 from urllib.parse import urlparse, parse_qs 7 from base64 import decodebytes, encodebytes 8 import json 9 10 class AliPay(object): 11 """ 12 支付寶支付接口(PC端支付接口)13 """ 14 15 def __init__(self, appid, app_notify_url, app_private_key_path, 16 alipay_public_key_path, return_url, debug=False): 17 self.appid = appid 18 self.app_notify_url = app_notify_url 19 self.app_private_key_path = app_private_key_path 20 self.app_private_key = None 21 self.return_url = return_url 22 with open(self.app_private_key_path) as fp: 23 self.app_private_key = RSA.importKey(fp.read()) 24 self.alipay_public_key_path = alipay_public_key_path 25 with open(self.alipay_public_key_path) as fp: 26 self.alipay_public_key = RSA.importKey(fp.read()) 27 28 if debug is True: 29 self.__gateway = "https://openapi.alipaydev.com/gateway.do" 30 else: 31 self.__gateway = "https://openapi.alipay.com/gateway.do" 32 33 def direct_pay(self, subject, out_trade_no, total_amount, return_url=None, **kwargs): 34 biz_content = { 35 "subject": subject, 36 "out_trade_no": out_trade_no, 37 "total_amount": total_amount, 38 "product_code": "FAST_INSTANT_TRADE_PAY", 39 # "qr_pay_mode":4 40 } 41 42 biz_content.update(kwargs) 43 data = self.build_body("alipay.trade.page.pay", biz_content, self.return_url) 44 return self.sign_data(data) 45 46 def build_body(self, method, biz_content, return_url=None): 47 data = { 48 "app_id": self.appid, 49 "method": method, 50 "charset": "utf-8", 51 "sign_type": "RSA2", 52 "timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S"), 53 "version": "1.0", 54 "biz_content": biz_content 55 } 56 57 if return_url is not None: 58 data["notify_url"] = self.app_notify_url 59 data["return_url"] = self.return_url 60 61 return data 62 63 def sign_data(self, data): 64 data.pop("sign", None) 65 # 排序後的字符串 66 unsigned_items = self.ordered_data(data) 67 unsigned_string = "&".join("{0}={1}".format(k, v) for k, v in unsigned_items) 68 sign = self.sign(unsigned_string.encode("utf-8")) 69 # ordered_items = self.ordered_data(data) 70 quoted_string = "&".join("{0}={1}".format(k, quote_plus(v)) for k, v in unsigned_items) 71 72 # 獲得最終的訂單信息字符串 73 signed_string = quoted_string + "&sign=" + quote_plus(sign) 74 return signed_string 75 76 def ordered_data(self, data): 77 complex_keys = [] 78 for key, value in data.items(): 79 if isinstance(value, dict): 80 complex_keys.append(key) 81 82 # 將字典類型的數據dump出來 83 for key in complex_keys: 84 data[key] = json.dumps(data[key], separators=(‘,‘, ‘:‘)) 85 86 return sorted([(k, v) for k, v in data.items()]) 87 88 def sign(self, unsigned_string): 89 # 開始計算簽名 90 key = self.app_private_key 91 signer = PKCS1_v1_5.new(key) 92 signature = signer.sign(SHA256.new(unsigned_string)) 93 # base64 編碼，轉換為unicode表示並移除回車 94 sign = encodebytes(signature).decode("utf8").replace("\n", "") 95 return sign 96 97 def _verify(self, raw_content, signature): 98 # 開始計算簽名 99 key = self.alipay_public_key 100 signer = PKCS1_v1_5.new(key) 101 digest = SHA256.new() 102 digest.update(raw_content.encode("utf8")) 103 if signer.verify(digest, decodebytes(signature.encode("utf8"))): 104 return True 105 return False 106 107 def verify(self, data, signature): 108 if "sign_type" in data: 109 sign_type = data.pop("sign_type") 110 # 排序後的字符串 111 unsigned_items = self.ordered_data(data) 112 message = "&".join(u"{}={}".format(k, v) for k, v in unsigned_items) 113 return self._verify(message, signature)
4.路由設置：
from django.conf.urls import url from django.contrib import admin from app01 import views urlpatterns = [ url(r‘^admin/‘, admin.site.urls), url(r‘^page1/‘, views.page1), url(r‘^index/‘, views.index), url(r‘^page2/‘, views.page2), ]
5.視圖：
from django.shortcuts import render, redirect, HttpResponse from utils.pay import AliPay import json import time def ali(): # 沙箱環境地址：https://openhome.alipay.com/platform/appDaily.htm?tab=info app_id = "2016091100483151" # POST請求，用於最後的檢測 notify_url = "http://127.0.0.1:8804/page2/" # notify_url = "http://www.wupeiqi.com:8804/page2/" # GET請求，用於頁面的跳轉展示 return_url = "http://127.0.0.1:8804/page2/" # return_url = "http://www.wupeiqi.com:8804/page2/" merchant_private_key_path = "keys/app_private_2048.txt" alipay_public_key_path = "keys/alipay_public_2048.txt" alipay = AliPay( appid=app_id, app_notify_url=notify_url, return_url=return_url, app_private_key_path=merchant_private_key_path, alipay_public_key_path=alipay_public_key_path, # 支付寶的公鑰，驗證支付寶回傳消息使用，不是你自己的公鑰 debug=True, # 默認False, ) return alipay def index(request): return render(request,‘index.html‘) def page1(request): if request.method == "GET": return render(request, ‘index.html‘) else: money = float(request.POST.get(‘money‘)) alipay = ali() # 生成支付的url query_params = alipay.direct_pay( subject="充氣式韓紅", # 商品簡單描述 out_trade_no="x2" + str(time.time()), # 商戶訂單號 total_amount=money, # 交易金額(單位: 元 保留倆位小數) ) pay_url = "https://openapi.alipaydev.com/gateway.do?{}".format(query_params) return redirect(pay_url) def page2(request): alipay = ali() if request.method == "POST": # 檢測是否支付成功 # 去請求體中獲取所有返回的數據：狀態/訂單號 from urllib.parse import parse_qs body_str = request.body.decode(‘utf-8‘) post_data = parse_qs(body_str) post_dict = {} for k, v in post_data.items(): post_dict[k] = v[0] print(post_dict) sign = post_dict.pop(‘sign‘, None) status = alipay.verify(post_dict, sign) print(‘POST驗證‘, status) return HttpResponse(‘POST返回‘) else: params = request.GET.dict() sign = params.pop(‘sign‘, None) status = alipay.verify(params, sign) print(‘GET驗證‘, status) return HttpResponse(‘支付成功‘)
6.模板
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="dist/css/bootstrap.css"> </head> <body> <form action="/page1/" method="POST"> {% csrf_token %} <input type="text" name="money"> <input type="submit" value="去支付" /> </form> <script></script> </body> </html>
註意：安裝Crypto
把安裝包放到C:\Users\frank\AppData\Local\Programs\Python\Python36\Lib\site-packages 然後解壓縮就行了。
支付寶支付流程