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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

WeiXin crifan 1967浏览 0评论

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[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 action="{{ url_for("create_event_qrcode", eventId=curEvent.id, curUserOpenid=curEvent.user.openid) }}" method="POST">
  <input type="submit" value="生成邀请码" class="button button-big button-fill color-blue"/>
</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–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:421]:
curUserOpenid=oswjmv4X0cCXcfkIwjoDfCkeTVVY

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:424]:
eventId=1

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:427]:
eventSceneStr=EVENT_1

<div–<——————————————————————————

<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–<——————————————————————————

<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–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:438]:
respTicket=gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0UwU0MyaUhsN1dHVXEzV2NvV3gzAAIEPD/AVwMEAAAAAA==

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:440]:
type(respQrcode)=<class ‘requests.models.Response’>, respQrcode=<Response [200]>

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:443]:
type(respQrcodeContent)=<type ‘str’>

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:447]:
type(curTimestamp)=<type ‘float’>, curTimestamp=1472216892.53

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:449]:
qrcodeFullPath=/tmp/1472216892.535.jpg

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:453]:
saved qrcode image to /tmp/1472216892.535.jpg ok

<div–<——————————————————————————

<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–<——————————————————————————

<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–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:464]:
mediaId=C5y9ZfW0n1W0XS0QeySTyoHqWSUeKRQAR3hyCSfM5RADCOx3RDxAqqwlklFQq20R

<div–<——————————————————————————

<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–<——————————————————————————

<div–<——————————————————————————

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

<div–<——————————————————————————

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:79]:
requestData=<xml><ToUserName><![CDATA[gh_ac090a9873a8]]></ToUserName>
<FromUserName><![CDATA[oswjmv4X0cCXcfkIwjoDfCkeTVVY]]></FromUserName>
<CreateTime>1472217198</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[SCAN]]></Event>
<EventKey><![CDATA[EVENT_10]]></EventKey>
<Ticket><![CDATA[gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0JrUnpoQlBsNEdHWjBtQV9VR3gzAAIEOxTAVwMEAAAAAA==]]></Ticket>
</xml>

<div–<——————————————————————————

<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>
<FromUserName><![CDATA[oswjmv4X0cCXcfkIwjoDfCkeTVVY]]></FromUserName>
<CreateTime>1472217198</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[SCAN]]></Event>
<EventKey><![CDATA[EVENT_10]]></EventKey>
<Ticket><![CDATA[gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0JrUnpoQlBsNEdHWjBtQV9VR3gzAAIEOxTAVwMEAAAAAA==]]></Ticket>
</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–<——————————————————————————

<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>
<FromUserName><![CDATA[oswjmv4X0cCXcfkIwjoDfCkeTVVY]]></FromUserName>
<CreateTime>1472217198</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[SCAN]]></Event>
<EventKey><![CDATA[EVENT_10]]></EventKey>
<Ticket><![CDATA[gQGo8DoAAAAAAAAAASxodHRwOi8vd2VpeGluLnFxLmNvbS9xL0JrUnpoQlBsNEdHWjBtQV9VR3gzAAIEOxTAVwMEAAAAAA==]]></Ticket>
</xml>

<div–<——————————————————————————

<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>
    <ToUserName><![CDATA[oswjmv4X0cCXcfkIwjoDfCkeTVVY]]></ToUserName>
    <FromUserName><![CDATA[gh_ac090a9873a8]]></FromUserName>
    <CreateTime>1472217198</CreateTime>
    <MsgType><![CDATA[text]]></MsgType>
    <Content><![CDATA[暂时不支持此操作: scan]]></Content>
    </xml>

<div–<——————————————————————————

DEBUG in views [/usr/share/nginx/html/SIPEvents/sipevents/views.py:153]:
respContentXml=
    <xml>
    <ToUserName><![CDATA[oswjmv4X0cCXcfkIwjoDfCkeTVVY]]></ToUserName>
    <FromUserName><![CDATA[gh_ac090a9873a8]]></FromUserName>
    <CreateTime>1472217198</CreateTime>
    <MsgType><![CDATA[text]]></MsgType>
    <Content><![CDATA[暂时不支持此操作: scan]]></Content>
    </xml>

暂时此处不支持操作而已:

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