github地址：cppfun@wechat-open-third-party-dev
在开始本节之前，你需要先阅读前四节的内容：
微信公众号第三方平台开发python教程 Part 1
微信公众号第三方平台开发python教程 Part 2
微信公众号第三方平台开发python教程 Part 3
微信公众号第三方平台开发python教程 Part 4
本节第五讲，我们讲讲如何刷新token（刷新授权公众号的接口调用令牌）。
这个其实就更简单了，代码如下：
defget_refresh_authorizer_access_token(self,authorizer_appid,authorizer_refresh_token):
url='https://api./cgi-bin/component/api_authorizer_token?component_access_token=%s'\
%self.get_com_access_token()
payload={
"component_appid":ponent_appid,
"authorizer_appid": authorizer_appid,
"authorizer_refresh_token": authorizer_refresh_token
}
headers={'content-type':'application/json'}
response=requests.post(url,data=json.dumps(payload),headers=headers)
returnresponse.json()
这里需要两个参数：
# authorizer_appid
# 授权方appid
# authorizer_refresh_token
# 授权方的刷新令牌，刷新令牌主要用于公众号第三方平台获取和刷新已授权用户的access_token，只会在授权时刻提供，请妥善保存。
# 我们一般将其保存在数据库中，因为你授权的公众号不止一个
现在我们看看我们的class WxOpenSDK，其代码如下：
classWxOpenCallback:
def__init__(self):
self.token=token
defcheck_signature(self,pams):
ifnotself.token:
returnHttpResponse('TOKEN is not defined!')
msg_signature=pams.get('msg_signature','')
timestamp=pams.get('timestamp','')
nonce=pams.get('nonce','')
tmparr=[self.token,timestamp,nonce]
tmparr.sort()
string=''.join(tmparr)
string=hashlib.sha1(string).hexdigest()
# print signature
# print string
returnmsg_signature==string
classWxOpenSDK:
def__init__(self,ticket):
ponent_appid=component_appid
ponent_appsecret=component_appsecret
self.ticket=ticket
# something below...
defget_com_access_token(self):
# load file
json_file=open('com_access_token.json')
data=json.load(json_file)
json_file.close()
component_access_token=data['component_access_token']
now=time.time()
ifdata['expire_time']<now:
url="https://api./cgi-bin/component/api_component_token"
payload={'component_appid':ponent_appid,
'component_appsecret':ponent_appsecret,
'component_verify_ticket':self.ticket}
headers={'content-type':'application/json'}
response=requests.post(url,data=json.dumps(payload),headers=headers)
component_access_token=json.loads(response.text)['component_access_token']
data['component_access_token']=component_access_token
data['expire_time']=int(now)+7000
# save file
json_file=open('com_access_token.json','w')
json_file.write(json.dumps(data))
json_file.close()
returncomponent_access_token
defget_pre_auth_code(self):
# load file
json_file=open('pre_auth_code.json')
data=json.load(json_file)
json_file.close()
pre_auth_code=data['pre_auth_code']
now=time.time()
ifdata['expire_time']<now:
url="https://api./cgi-bin/component/api_create_preauthcode?component_access_token=%s"\
%self.get_com_access_token()
payload={'component_appid':ponent_appid}
headers={'content-type':'application/json'}
response=requests.post(url,data=json.dumps(payload),headers=headers)
pre_auth_code=json.loads(response.text)['pre_auth_code']
data['pre_auth_code']=pre_auth_code
data['expire_time']=int(now)+1100
# save file
json_file=open('pre_auth_code.json','w')
json_file.write(json.dumps(data))
json_file.close()
returnpre_auth_code
defget_authorization_info(self,authorization_code):
url='https://api./cgi-bin/component/api_query_auth?component_access_token=%s'\
%self.get_com_access_token()
payload={
"component_appid":ponent_appid,
"authorization_code": authorization_code
}
headers={'content-type':'application/json'}
response=requests.post(url,data=json.dumps(payload),headers=headers)
data=response.json()
returndata['authorization_info']
defget_refresh_authorizer_access_token(self,authorizer_appid,authorizer_refresh_token):
url='https://api./cgi-bin/component/api_authorizer_token?component_access_token=%s'\
%self.get_com_access_token()
payload={
"component_appid":ponent_appid,
"authorizer_appid": authorizer_appid,
"authorizer_refresh_token": authorizer_refresh_token
}
headers={'content-type':'application/json'}
response=requests.post(url,data=json.dumps(payload),headers=headers)
returnresponse.json()
接下来，我们会进行第六节。
