本文实例讲述了Python使用微信SDK实现的微信支付功能。分享给大家供大家参考,具体如下:
最近一段时间一直在搞微信平台开发,v3.37版本微信支付接口变化贼大,所以就看着php的demo移植为Python版,为了保持一致,所以接口方法基本都没有变,这样的好处就是不用写demo了,看着微信官方的demo照葫芦画瓢就可以了。
代码放到github下载地址:https://github.com/Skycrab/wzhifuSDK
我主要测试了JsApi调用方式,其它的调用方式并没有测试,如果你发现了bug,请多多pull request,我将不甚感激。
方便观看,代码贴于此。
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#coding:utf-8 """ Created on 2014-11-24 @author: http://blog.csdn.net/yueguanghaidao * 微信支付帮助库 * ==================================================== * 接口分三种类型: * 【请求型接口】--Wxpay_client_ * 统一支付接口类--UnifiedOrder * 订单查询接口--OrderQuery * 退款申请接口--Refund * 退款查询接口--RefundQuery * 对账单接口--DownloadBill * 短链接转换接口--ShortUrl * 【响应型接口】--Wxpay_server_ * 通用通知接口--Notify * Native支付——请求商家获取商品信息接口--NativeCall * 【其他】 * 静态链接二维码--NativeLink * JSAPI支付--JsApi * ===================================================== * 【CommonUtil】常用工具: * trimString(),设置参数时需要用到的字符处理函数 * createNoncestr(),产生随机字符串,不长于32位 * formatBizQueryParaMap(),格式化参数,签名过程需要用到 * getSign(),生成签名 * arrayToXml(),array转xml * xmlToArray(),xml转 array * postXmlCurl(),以post方式提交xml到对应的接口url * postXmlSSLCurl(),使用证书,以post方式提交xml到对应的接口url """ import json import time import random import urllib2 import hashlib import threading from urllib import quote import xml.etree.ElementTree as ET try : import pycurl from cStringIO import StringIO except ImportError: pycurl = None class WxPayConf_pub( object ): """配置账号信息""" #=======【基本信息设置】===================================== #微信公众号身份的唯一标识。审核通过后,在微信发送的邮件中查看 APPID = "wx8888888888888888" #JSAPI接口中获取openid,审核后在公众平台开启开发模式后可查看 APPSECRET = "48888888888888888888888888888887" #受理商ID,身份标识 MCHID = "18888887" #商户支付密钥Key。审核通过后,在微信发送的邮件中查看 KEY = "48888888888888888888888888888886" #=======【异步通知url设置】=================================== #异步通知url,商户根据实际开发过程设定 NOTIFY_URL = "http://******.com/payback" #=======【JSAPI路径设置】=================================== #获取access_token过程中的跳转uri,通过跳转将code传入jsapi支付页面 JS_API_CALL_URL = "http://******.com/pay/?showwxpaytitle=1" #=======【证书路径设置】===================================== #证书路径,注意应该填写绝对路径 SSLCERT_PATH = "/******/cacert/apiclient_cert.pem" SSLKEY_PATH = "/******/cacert/apiclient_key.pem" #=======【curl超时设置】=================================== CURL_TIMEOUT = 30 #=======【HTTP客户端设置】=================================== HTTP_CLIENT = "CURL" # ("URLLIB", "CURL") class Singleton( object ): """单例模式""" _instance_lock = threading.Lock() def __new__( cls , * args, * * kwargs): if not hasattr ( cls , "_instance" ): with cls ._instance_lock: if not hasattr ( cls , "_instance" ): impl = cls .configure() if hasattr ( cls , "configure" ) else cls instance = super (Singleton, cls ).__new__(impl, * args, * * kwargs) instance.__init__( * args, * * kwargs) cls ._instance = instance return cls ._instance class UrllibClient( object ): """使用urlib2发送请求""" def get( self , url, second = 30 ): return self .postXml( None , url, second) def postXml( self , xml, url, second = 30 ): """不使用证书""" data = urllib2.urlopen(url, xml, timeout = second).read() return data def postXmlSSL( self , xml, url, second = 30 ): """使用证书""" raise TypeError( "please use CurlClient" ) class CurlClient( object ): """使用Curl发送请求""" def __init__( self ): self .curl = pycurl.Curl() self .curl.setopt(pycurl.SSL_VERIFYHOST, False ) self .curl.setopt(pycurl.SSL_VERIFYPEER, False ) #设置不输出header self .curl.setopt(pycurl.HEADER, False ) def get( self , url, second = 30 ): return self .postXmlSSL( None , url, second = second, cert = False , post = False ) def postXml( self , xml, url, second = 30 ): """不使用证书""" return self .postXmlSSL(xml, url, second = second, cert = False , post = True ) def postXmlSSL( self , xml, url, second = 30 , cert = True , post = True ): """使用证书""" self .curl.setopt(pycurl.URL, url) self .curl.setopt(pycurl.TIMEOUT, second) #设置证书 #使用证书:cert 与 key 分别属于两个.pem文件 #默认格式为PEM,可以注释 if cert: self .curl.setopt(pycurl.SSLKEYTYPE, "PEM" ) self .curl.setopt(pycurl.SSLKEY, WxPayConf_pub.SSLKEY_PATH) self .curl.setopt(pycurl.SSLCERTTYPE, "PEM" ) self .curl.setopt(pycurl.SSLCERT, WxPayConf_pub.SSLKEY_PATH) #post提交方式 if post: self .curl.setopt(pycurl.POST, True ) self .curl.setopt(pycurl.POSTFIELDS, xml) buff = StringIO() self .curl.setopt(pycurl.WRITEFUNCTION, buff.write) self .curl.perform() return buff.getvalue() class HttpClient(Singleton): @classmethod def configure( cls ): if pycurl is not None and WxPayConf_pub.HTTP_CLIENT ! = "URLLIB" : return CurlClient else : return UrllibClient class Common_util_pub( object ): """所有接口的基类""" def trimString( self , value): if value is not None and len (value) = = 0 : value = None return value def createNoncestr( self , length = 32 ): """产生随机字符串,不长于32位""" chars = "abcdefghijklmnopqrstuvwxyz0123456789" strs = [] for x in range (length): strs.append(chars[random.randrange( 0 , len (chars))]) return "".join(strs) def formatBizQueryParaMap( self , paraMap, urlencode): """格式化参数,签名过程需要使用""" slist = sorted (paraMap) buff = [] for k in slist: v = quote(paraMap[k]) if urlencode else paraMap[k] buff.append( "{0}={1}" . format (k, v)) return "&" .join(buff) def getSign( self , obj): """生成签名""" #签名步骤一:按字典序排序参数,formatBizQueryParaMap已做 String = self .formatBizQueryParaMap(obj, False ) #签名步骤二:在string后加入KEY String = "{0}&key={1}" . format (String,WxPayConf_pub.KEY) #签名步骤三:MD5加密 String = hashlib.md5(String).hexdigest() #签名步骤四:所有字符转为大写 result_ = String.upper() return result_ def arrayToXml( self , arr): """array转xml""" xml = [ "<xml>" ] for k, v in arr.iteritems(): if v.isdigit(): xml.append( "<{0}>{1}</{0}>" . format (k, v)) else : xml.append( "<{0}><![CDATA[{1}]]></{0}>" . format (k, v)) xml.append( "</xml>" ) return "".join(xml) def xmlToArray( self , xml): """将xml转为array""" array_data = {} root = ET.fromstring(xml) for child in root: value = child.text array_data[child.tag] = value return array_data def postXmlCurl( self , xml, url, second = 30 ): """以post方式提交xml到对应的接口url""" return HttpClient().postXml(xml, url, second = second) def postXmlSSLCurl( self , xml, url, second = 30 ): """使用证书,以post方式提交xml到对应的接口url""" return HttpClient().postXmlSSL(xml, url, second = second) class JsApi_pub(Common_util_pub): """JSAPI支付——H5网页端调起支付接口""" code = None #code码,用以获取openid openid = None #用户的openid parameters = None #jsapi参数,格式为json prepay_id = None #使用统一支付接口得到的预支付id curl_timeout = None #curl超时时间 def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): self .curl_timeout = timeout def createOauthUrlForCode( self , redirectUrl): """生成可以获得code的url""" urlObj = {} urlObj[ "appid" ] = WxPayConf_pub.APPID urlObj[ "redirect_uri" ] = redirectUrl urlObj[ "response_type" ] = "code" urlObj[ "scope" ] = "snsapi_base" urlObj[ "state" ] = "STATE#wechat_redirect" bizString = self .formatBizQueryParaMap(urlObj, False ) return "https://open.weixin.qq.com/connect/oauth2/authorize?" + bizString def createOauthUrlForOpenid( self ): """生成可以获得openid的url""" urlObj = {} urlObj[ "appid" ] = WxPayConf_pub.APPID urlObj[ "secret" ] = WxPayConf_pub.APPSECRET urlObj[ "code" ] = self .code urlObj[ "grant_type" ] = "authorization_code" bizString = self .formatBizQueryParaMap(urlObj, False ) return "https://api.weixin.qq.com/sns/oauth2/access_token?" + bizString def getOpenid( self ): """通过curl向微信提交code,以获取openid""" url = self .createOauthUrlForOpenid() data = HttpClient().get(url) self .openid = json.loads(data)[ "openid" ] return self .openid def setPrepayId( self , prepayId): """设置prepay_id""" self .prepay_id = prepayId def setCode( self , code): """设置code""" self .code = code def getParameters( self ): """设置jsapi的参数""" jsApiObj = {} jsApiObj[ "appId" ] = WxPayConf_pub.APPID timeStamp = int (time.time()) jsApiObj[ "timeStamp" ] = "{0}" . format (timeStamp) jsApiObj[ "nonceStr" ] = self .createNoncestr() jsApiObj[ "package" ] = "prepay_id={0}" . format ( self .prepay_id) jsApiObj[ "signType" ] = "MD5" jsApiObj[ "paySign" ] = self .getSign(jsApiObj) self .parameters = json.dumps(jsApiObj) return self .parameters class Wxpay_client_pub(Common_util_pub): """请求型接口的基类""" response = None #微信返回的响应 url = None #接口链接 curl_timeout = None #curl超时时间 def __init__( self ): self .parameters = {} #请求参数,类型为关联数组 self .result = {} #返回参数,类型为关联数组 def setParameter( self , parameter, parameterValue): """设置请求参数""" self .parameters[ self .trimString(parameter)] = self .trimString(parameterValue) def createXml( self ): """设置标配的请求参数,生成签名,生成接口参数xml""" self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def postXml( self ): """post请求xml""" xml = self .createXml() self .response = self .postXmlCurl(xml, self .url, self .curl_timeout) return self .response def postXmlSSL( self ): """使用证书post请求xml""" xml = self .createXml() self .response = self .postXmlSSLCurl(xml, self .url, self .curl_timeout) return self .response def getResult( self ): """获取结果,默认不使用证书""" self .postXml() self .result = self .xmlToArray( self .response) return self .result class UnifiedOrder_pub(Wxpay_client_pub): """统一支付接口类""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/pay/unifiedorder" #设置curl超时时间 self .curl_timeout = timeout super (UnifiedOrder_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" #检测必填参数 if any ( self .parameters[key] is None for key in ( "out_trade_no" , "body" , "total_fee" , "notify_url" , "trade_type" )): raise ValueError( "missing parameter" ) if self .parameters[ "trade_type" ] = = "JSAPI" and self .parameters[ "openid" ] is None : raise ValueError( "JSAPI need openid parameters" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "spbill_create_ip" ] = "127.0.0.1" #终端ip self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def getPrepayId( self ): """获取prepay_id""" self .postXml() self .result = self .xmlToArray( self .response) prepay_id = self .result[ "prepay_id" ] return prepay_id class OrderQuery_pub(Wxpay_client_pub): """订单查询接口""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/pay/orderquery" #设置curl超时时间 self .curl_timeout = timeout super (OrderQuery_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" #检测必填参数 if any ( self .parameters[key] is None for key in ( "out_trade_no" , "transaction_id" )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) class Refund_pub(Wxpay_client_pub): """退款申请接口""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/secapi/pay/refund" #设置curl超时时间 self .curl_timeout = timeout super (Refund_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" if any ( self .parameters[key] is None for key in ( "out_trade_no" , "out_refund_no" , "total_fee" , "refund_fee" , "op_user_id" )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def getResult( self ): """ 获取结果,使用证书通信(需要双向证书)""" self .postXmlSSL() self .result = self .xmlToArray( self .response) return self .result class RefundQuery_pub(Wxpay_client_pub): """退款查询接口""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/pay/refundquery" #设置curl超时时间 self .curl_timeout = timeout super (RefundQuery_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" if any ( self .parameters[key] is None for key in ( "out_refund_no" , "out_trade_no" , "transaction_id" , "refund_id" )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def getResult( self ): """ 获取结果,使用证书通信(需要双向证书)""" self .postXmlSSL() self .result = self .xmlToArray( self .response) return self .result class DownloadBill_pub(Wxpay_client_pub): """对账单接口""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/pay/downloadbill" #设置curl超时时间 self .curl_timeout = timeout super (DownloadBill_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" if any ( self .parameters[key] is None for key in ( "bill_date" , )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def getResult( self ): """获取结果,默认不使用证书""" self .postXml() self .result = self .xmlToArray( self .response) return self .result class ShortUrl_pub(Wxpay_client_pub): """短链接转换接口""" def __init__( self , timeout = WxPayConf_pub.CURL_TIMEOUT): #设置接口链接 self .url = "https://api.mch.weixin.qq.com/tools/shorturl" #设置curl超时时间 self .curl_timeout = timeout super (ShortUrl_pub, self ).__init__() def createXml( self ): """生成接口参数xml""" if any ( self .parameters[key] is None for key in ( "long_url" , )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 return self .arrayToXml( self .parameters) def getShortUrl( self ): """获取prepay_id""" self .postXml() prepay_id = self .result[ "short_url" ] return prepay_id class Wxpay_server_pub(Common_util_pub): """响应型接口基类""" SUCCESS, FAIL = "SUCCESS" , "FAIL" def __init__( self ): self .data = {} #接收到的数据,类型为关联数组 self .returnParameters = {} #返回参数,类型为关联数组 def saveData( self , xml): """将微信的请求xml转换成关联数组,以方便数据处理""" self .data = self .xmlToArray(xml) def checkSign( self ): """校验签名""" tmpData = dict ( self .data) #make a copy to save sign del tmpData[ 'sign' ] sign = self .getSign(tmpData) #本地签名 if self .data[ 'sign' ] = = sign: return True return False def getData( self ): """获取微信的请求数据""" return self .data def setReturnParameter( self , parameter, parameterValue): """设置返回微信的xml数据""" self .returnParameters[ self .trimString(parameter)] = self .trimString(parameterValue) def createXml( self ): """生成接口参数xml""" return self .arrayToXml( self .returnParameters) def returnXml( self ): """将xml数据返回微信""" returnXml = self .createXml() return returnXml class Notify_pub(Wxpay_server_pub): """通用通知接口""" class NativeCall_pub(Wxpay_server_pub): """请求商家获取商品信息接口""" def createXml( self ): """生成接口参数xml""" if self .returnParameters[ "return_code" ] = = self .SUCCESS: self .returnParameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .returnParameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 self .returnParameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .returnParameters[ "sign" ] = self .getSign( self .returnParameters) #签名 return self .arrayToXml( self .returnParameters) def getProductId( self ): """获取product_id""" product_id = self .data[ "product_id" ] return product_id class NativeLink_pub(Common_util_pub): """静态链接二维码""" url = None #静态链接 def __init__( self ): self .parameters = {} #静态链接参数 def setParameter( self , parameter, parameterValue): """设置参数""" self .parameters[ self .trimString(parameter)] = self .trimString(parameterValue) def createLink( self ): if any ( self .parameters[key] is None for key in ( "product_id" , )): raise ValueError( "missing parameter" ) self .parameters[ "appid" ] = WxPayConf_pub.APPID #公众账号ID self .parameters[ "mch_id" ] = WxPayConf_pub.MCHID #商户号 time_stamp = int (time.time()) self .parameters[ "time_stamp" ] = "{0}" . format (time_stamp) #时间戳 self .parameters[ "nonce_str" ] = self .createNoncestr() #随机字符串 self .parameters[ "sign" ] = self .getSign( self .parameters) #签名 bizString = self .formatBizQueryParaMap( self .parameters, false) self .url = "weixin://wxpay/bizpayurl?" + bizString def getUrl( self ): """返回链接""" self .createLink() return self .url def test(): c = HttpClient() assert c.get( "http://www.baidu.com" )[: 15 ] = = "<!DOCTYPE html>" c2 = HttpClient() assert id (c) = = id (c2) if __name__ = = "__main__" : test() |
希望本文所述对大家Python程序设计有所帮助。