［已解决］微信后台服务器如何发送图片给微信公众号的关注者用户

折腾：

［记录］Flask中生成二维码并通过发给微信公众号的用户

期间，需要把已经得到的，二进制的二维码，

作为图片发送给用户

此处是Flask的后台服务器，用到了wechat-python-sdk

这个微信的SDK

其中又可能会涉及：

如何保存该图片？

那么可以参考：

新增临时素材 – 微信公众平台开发者文档

去代码中看看：

直接就可以看到有：

send_image_message

def send_image_message(self, user_id, media_id):

"""

发送图片消息

详情请参考 http://mp.weixin.qq.com/wiki/7/12a5a320ae96fecdf0e15cb06123de9f.html

:param user_id: 用户 ID, 就是你收到的 WechatMessage 的 source

:param media_id: 图片的媒体ID。可以通过 :func:`upload_media` 上传。

:return: 返回的 JSON 数据包

"""

return self.request.post(

url=’https://api.weixin.qq.com/cgi-bin/message/custom/send’,

data={

‘touser’: user_id,

‘msgtype’: ‘image’,

‘image’: {

‘media_id’: media_id,

}

)

对应着官网的：

被动回复用户消息 – 微信公众平台开发者文档

回复图片消息

很明显，需要：

“通过素材管理接口上传多媒体文件，得到的id。”

然后才能发送图片给用户。

所以去：

搜：

media/upload

看到：

def upload_media(self, media_type, media_file, extension=”):

"""

上传多媒体文件

详情请参考 http://mp.weixin.qq.com/wiki/10/78b15308b053286e2a66b33f0f0f5fb6.html

:param media_type: 媒体文件类型，分别有图片（image）、语音（voice）、视频（video）和缩略图（thumb）

:param media_file: 要上传的文件，一个 File object 或 StringIO object

:param extension: 如果 media_file 传入的为 StringIO object，那么必须传入 extension 显示指明该媒体文件扩展名，如 “mp3“, “amr“；如果 media_file 传入的为 File object，那么该参数请留空

:return: 返回的 JSON 数据包

"""

if six.PY2:

return self._upload_media_py2(media_type, media_file, extension)

else:

return self._upload_media_py3(media_type, media_file, extension)

注意：

调用此接口必须是file或StringIO

而此处的是str：

type(respQrcodeContent)=<type ‘str’>, respQrcodeContent=

－》看来还是去保存二维码图片数据到本地临时文件，然后再去打开当作文件，然后再上传

［已解决］使用wechat-python上传图片的media出错：OfficialAPIError 41005 media data missing hint ScXL0536e292

然后就可以上传图片临时资源，得到对应的media_id了：

uploadMediaResp={u’media_id’: u’6-_Mx74k2P7B6cmOcbSlyZHkqTQbLj9y-CXUlPY3ltxGckEvbj3YT8fKx2dkNE2X’, u’created_at’: 1472215847, u’type’: u’image’}

然后，通过代码：

/Users/crifan/dev/dev_root/daryun/SIPEvents/sourcecode/flask/sipevents/templates/showEvent.html

</form>

/Users/crifan/dev/dev_root/daryun/SIPEvents/sourcecode/flask/sipevents/views.py

@app.route(‘/create_event_qrcode’, methods=[‘GET’, ‘POST’])

def create_event_qrcode():

requestMethod = request.method

requestArgs = request.args

app.logger.debug(‘requestMethod=%s, requestArgs=%s’, requestMethod, requestArgs)

curUserOpenid = request.args.get("curUserOpenid", "")

app.logger.debug(‘curUserOpenid=%s’, curUserOpenid)

eventId = request.args.get("eventId", "")

app.logger.debug(‘eventId=%s’, eventId)

eventSceneStr = "EVENT_" + eventId

app.logger.debug(‘eventSceneStr=%s’, eventSceneStr)

postJson = {"action_name": "QR_LIMIT_STR_SCENE", "action_info": {"scene": {"scene_str": eventSceneStr}}}

# postJson = {‘action_info’: {‘scene’: {‘scene_str’: u’EVENT_10′}}, ‘action_name’: ‘QR_LIMIT_STR_SCENE’}

app.logger.debug(‘postJson=%s’, postJson)

respQrcodeJson = wechat.create_qrcode(postJson)

app.logger.debug(‘respQrcodeJson=%s’, respQrcodeJson)

# respQrcodeJson = {u’url’: u’http://weixin.qq.com/q/BkRzhBPl4GGZ0mA_UGx3′,

# u’ticket’: u’gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0JrUnpoQlBsNEdHWjBtQV9VR3gzAAIEOxTAVwMEAAAAAA==’}

respTicket = respQrcodeJson[‘ticket’]

app.logger.debug(‘respTicket=%s’, respTicket)

respQrcode = wechat.show_qrcode(respTicket)

app.logger.debug(‘type(respQrcode)=%s, respQrcode=%s’, type(respQrcode), respQrcode)

respQrcodeContent = respQrcode.content

#app.logger.debug(‘type(respQrcodeContent)=%s, respQrcodeContent=%s’, type(respQrcodeContent), respQrcodeContent)

app.logger.debug(‘type(respQrcodeContent)=%s’, type(respQrcodeContent))

# save qrcode data to tmp file

curTimestamp = time.time()

app.logger.debug("type(curTimestamp)=%s, curTimestamp=%s", type(curTimestamp), curTimestamp)

qrcodeFullPath = "/tmp/%.3f.jpg" % (curTimestamp)

app.logger.debug("qrcodeFullPath=%s", qrcodeFullPath)

with open(qrcodeFullPath, ‘wb’) as f:

f.write(respQrcodeContent)

f.close()

app.logger.debug("saved qrcode image to %s ok", qrcodeFullPath)

with open(qrcodeFullPath, ‘rb’) as qrcodeFile:

app.logger.debug("type(qrcodeFile)=%s, qrcodeFile=%s", type(qrcodeFile), qrcodeFile)

uploadMediaResp = wechat.upload_media(media_type="image", media_file=qrcodeFile)

app.logger.debug("uploadMediaResp=%s", uploadMediaResp)

# uploadMediaResp = {u’media_id’: u’6-_Mx74k2P7B6cmOcbSlyZHkqTQbLj9y-CXUlPY3ltxGckEvbj3YT8fKx2dkNE2X’,

# u’created_at’: 1472215847, u’type’: u’image’}

qrcodeFile.close()

mediaId = uploadMediaResp[‘media_id’]

app.logger.debug("mediaId=%s", mediaId)

sendImgMsgResp = wechat.send_image_message(user_id=curUserOpenid, media_id=mediaId)

app.logger.debug("sendImgMsgResp=%s", sendImgMsgResp)

return redirect(url_for(‘index’, curUserOpenId=curUserOpenid))

log：

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:418]:

requestMethod=POST, requestArgs=ImmutableMultiDict([(‘eventId’, u’1′), (‘curUserOpenid’, u’oswjmv4X0cCXcfkIwjoDfCkeTVVY’)])

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:421]:

curUserOpenid=oswjmv4X0cCXcfkIwjoDfCkeTVVY

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:424]:

eventId=1

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:427]:

eventSceneStr=EVENT_1

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:431]:

postJson={‘action_info’: {‘scene’: {‘scene_str’: u’EVENT_1′}}, ‘action_name’: ‘QR_LIMIT_STR_SCENE’}

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:433]:

respQrcodeJson={u’url’: u’http://weixin.qq.com/q/E0SC2iHl7WGUq3WcoWx3′, u’ticket’: u’gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0UwU0MyaUhsN1dHVXEzV2NvV3gzAAIEPD/AVwMEAAAAAA==’}

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:438]:

respTicket=gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0UwU0MyaUhsN1dHVXEzV2NvV3gzAAIEPD/AVwMEAAAAAA==

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:440]:

type(respQrcode)=<class ‘requests.models.Response’>, respQrcode=<Response [200]>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:443]:

type(respQrcodeContent)=<type ‘str’>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:447]:

type(curTimestamp)=<type ‘float’>, curTimestamp=1472216892.53

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:449]:

qrcodeFullPath=/tmp/1472216892.535.jpg

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:453]:

saved qrcode image to /tmp/1472216892.535.jpg ok

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:456]:

type(qrcodeFile)=<type ‘file’>, qrcodeFile=<open file ‘/tmp/1472216892.535.jpg’, mode ‘rb’ at 0x7ff4478dc030>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:458]:

uploadMediaResp={u’media_id’: u’C5y9ZfW0n1W0XS0QeySTyoHqWSUeKRQAR3hyCSfM5RADCOx3RDxAqqwlklFQq20R’, u’created_at’: 1472216892, u’type’: u’image’}

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:464]:

mediaId=C5y9ZfW0n1W0XS0QeySTyoHqWSUeKRQAR3hyCSfM5RADCOx3RDxAqqwlklFQq20R

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:466]:

sendImgMsgResp={u’errcode’: 0, u’errmsg’: u’ok’}

即可实现，发送验证码图片给用户：

点击打开图片，长按图片，识别图中二维码：

然后微信服务器收到了对应的事件：

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:64]:

signature=722759501b865c7310800b4d7f380d72e1aef246, timestamp=1472217198, nonce=1696752715, echostr=

<div–<——————————————————————————

tmp_list= [‘sipevents’, u’1472217198′, u’1696752715′]

after sort: tmp_list= [u’1472217198′, u’1696752715′, ‘sipevents’]

tmp_str= 14722171981696752715sipevents

tmp_str_encoded= 14722171981696752715sipevents

tmp_str_sha1= <sha1 HASH object @ 0x7ff44795b030>

tmp_str_hexdigest= 722759501b865c7310800b4d7f380d72e1aef246

signature= 722759501b865c7310800b4d7f380d72e1aef246

signature OK

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:68]:

wechat check_signature OK

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:76]:

requestMethod=POST

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:79]:

requestData=<xml><ToUserName><![CDATA[gh_ac090a9873a8]]></ToUserName>

</xml>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:86]:

requestArgs=ImmutableMultiDict([(‘nonce’, u’1696752715′), (‘timestamp’, u’1472217198′), (‘signature’, u’722759501b865c7310800b4d7f380d72e1aef246′), (‘openid’, u’oswjmv4X0cCXcfkIwjoDfCkeTVVY’)])

<div–<——————————————————————————

data= <xml><ToUserName><![CDATA[gh_ac090a9873a8]]></ToUserName>

</xml>

self.conf.encrypt_mode= normal

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:98]:

parse post body data OK

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:113]:

messageId=0, messageTarget=gh_ac090a9873a8, messageSource=oswjmv4X0cCXcfkIwjoDfCkeTVVY, messageTime=1472217198, messageType=scan, messageRaw=<xml><ToUserName><![CDATA[gh_ac090a9873a8]]></ToUserName>

</xml>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:151]:

respContent=暂时不支持此操作: scan

<div–<——————————————————————————

text response=

<xml>

</xml>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:153]:

respContentXml=

<xml>

</xml>

暂时此处不支持操作而已：

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［已解决］微信后台服务器如何发送图片给微信公众号的关注者用户

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