微信扫描二维码统计来源对每个公司市场分析有很大作用。还好微信为开发者提供了一个生成带参数的二维码的接口。最近公司要做个关注微信二维码统计来源的，百度了n久也没找到这样的demo, 研究了好几天，终于搞定。现写成文档分享出来。
实现目标：粉丝生成自已的二维码（微信公众号二维码带这个粉丝的参数），别人扫这个二维码时，如果没有关注，则提示关注，关注后就成为该粉丝的下线了，方便统计是谁发展来的用户
上代码：
<%
'**********************************************
'注意事项
'ASP文件需要以UTF-8的格式保存,否则乱码.
'作者wx :18611436777
'**********************************************
dim Signature '微信加密签名
dim Timestamp '时间戳
dim Nonce '随机数
dim Echostr '随机字符串
dim Token '与微信后台设置的token一致
dim encrypt_type '加密类型
dim msg_signature '签名
Token="7Gk0Ry2Wn"'
Signature = request.QueryString("signature")
Nonce = request.QueryString("nonce")
Timestamp = request.QueryString("timestamp")
Echostr = request.QueryString("echostr")
encrypt_type = request.QueryString("encrypt_type")
msg_signature = request.QueryString("msg_signature")
'验证微信接口
If EchoStr<>"" then
'下面进行Token,TimesTamp,Nonce三个参数的字典排序
dim str,i
dim Myarray:Myarray=Sort(Array(Token,TimesTamp,Nonce))
For i=0 To Ubound(Myarray)
str=str&Myarray(i)
Next
if Lcase(SignaTure)=Lcase(SHA1(str,"Hex")) then
Response.Write EchoStr '验证成功，返回正确EchoStr给微信，接通接口API
Response.End()
end if
End if
'获取微信主动发送过来的内容
Set xmldom = Server.CreateObject("MSXML2.DOMDocument")
xmldom.load request
xml = xmldom.documentElement.xml
'call CreateTextFile(request.QueryString&xml,"a.txt")
If encrypt_type = "aes" Then
res = ToAes(xml,0)
xmldom.loadxml res
End If
ToUserName=xmldom.getelementsbytagname("ToUserName").item(0).text '接收者微信账号。即我们的公众平台账号。
FromUserName=xmldom.getelementsbytagname("FromUserName").item(0).text '发送者微信账号Openid
CreateTime=xmldom.getelementsbytagname("CreateTime").item(0).text
MsgType=xmldom.getelementsbytagname("MsgType").item(0).text
if (MsgType="event") then
strEventType=xmldom.getelementsbytagname("Event").item(0).text '微信事件
if strEventType="subscribe" then '表示订阅微信公众平台
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Content="感谢关注"
if EventKey<>"" then
EventKey=replace(EventKey,"qrscene_","")
Content = "你的上线ID:"&EventKey
Else
EventKey= 0
Content = "感谢关注"
end if
Call Login(EventKey,FromUserName)
Call Return_Text(Content)
ElseIf strEventType="unsubscribe" Then'取消关注
Content="取消关注"
Call Return_Text(Content)
ElseIf strEventType="CLICK" Then'点击菜单获取关键字，获取
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Content=EventKey
Call Return_Text(Content)
ElseIf strEventType="VIEW" Then'点击菜单获取关键字，跳转到链接
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Content=EventKey
Call Return_Text(Content)
ElseIf strEventType="SCAN" Then '扫描二维码
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Content= "欢迎再次光临"
Call Return_Text(Content)
ElseIf strEventType="scancode_push" or strEventType="scancode_waitmsg" Then '点击菜单，调用扫码推事件的事件推送
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
ScanResult=xmldom.getelementsbytagname("ScanResult").item(0).text
Content=ScanResult
Call Return_Text(Content)
ElseIf strEventType="pic_sysphoto" or strEventType="pic_photo_or_album" or strEventType="pic_weixin" Then '点击菜单，调用系统拍照发图
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Counts=xmldom.getelementsbytagname("Count").item(0).text
Content="拍照发图，接收【"&Counts&"】张图片"
Call Return_Text(Content)
ElseIf strEventType="location_select" Then '点击菜单，调用位置发送
EventKey=xmldom.getelementsbytagname("EventKey").item(0).text
Location_X=xmldom.getelementsbytagname("Location_X").item(0).text
Location_Y=xmldom.getelementsbytagname("Location_Y").item(0).text
Scale=xmldom.getelementsbytagname("Scale").item(0).text
Label=xmldom.getelementsbytagname("Label").item(0).text
Content="发送位置"&EventKey
Call Return_Text(Content)
ElseIf strEventType="LOCATION" Then'获取用户地理位置，当用户打开对话框时，自动获取微信用户的实时地址。本功能需要配合服务号的LEB接口。
Latitude=xmldom.getelementsbytagname("Latitude").item(0).text
Longitude=xmldom.getelementsbytagname("Longitude").item(0).text
Precision=xmldom.getelementsbytagname("Precision").item(0).text
'记录用户LEB信息
end if
else
MsgId=xmldom.getelementsbytagname("MsgId").item(0).text
End If
If MsgType="text" then'接收文本信息
Content=xmldom.getelementsbytagname("Content").item(0).text
Call Return_Text(Content)
elseif MsgType="image" then'接收图片信息
MediaId=xmldom.getelementsbytagname("MediaId").item(0).text
PicUrl=xmldom.getelementsbytagname("PicUrl").item(0).text
Content=PicUrl
Call Return_Text(Content)
elseif MsgType="voice" then'"接收语音信息
MediaId=xmldom.getelementsbytagname("MediaId").item(0).text
Format=xmldom.getelementsbytagname("Format").item(0).text
Content=MediaId
Call Return_Text(Content)
elseif MsgType="video" then'接收视频信息
MediaId=xmldom.getelementsbytagname("MediaId").item(0).text
ThumbMediaId=xmldom.getelementsbytagname("ThumbMediaId").item(0).text
Content=MediaId
Call Return_Text(Content)
elseif MsgType="location" then'接收位置信息
Location_X=xmldom.getelementsbytagname("Location_X").item(0).text
Location_Y=xmldom.getelementsbytagname("Location_Y").item(0).text
Scale=xmldom.getelementsbytagname("Scale").item(0).text
Label=xmldom.getelementsbytagname("Label").item(0).text
Content="地理位置"&Location_X&","&Location_Y&"你发的是地址信息:"&Label
Call Return_Text(Content)
elseif MsgType="link" then'接收链接信息
Title=xmldom.getelementsbytagname("Title").item(0).text
Descriptions=xmldom.getelementsbytagname("Description").item(0).text
Url=xmldom.getelementsbytagname("Url").item(0).text
Content=Url
Call Return_Text(Content)
end if
set xmldom=Nothing
'多图文消息
Function Return_News(Articles)
ArticleCount = Ubound(Articles)+1
str = "<xml>"&_
"<ToUserName><![CDATA["&FromUserName&"]]></ToUserName>"&_
"<FromUserName><![CDATA["&ToUserName&"]]></FromUserName>"&_
"<CreateTime>"&DateDiff("s","1970-01-01 08:00:00",Now())&"</CreateTime>"&_
"<MsgType><![CDATA[news]]></MsgType>"&_
"<ArticleCount>"&ArticleCount&"</ArticleCount>"&_
"<Articles>"
For i = 0 To ArticleCount-1
str = str & "<item>"&_
"<Title><![CDATA["&Articles(i)(0)&"]]></Title>"&_
"<Description><![CDATA["&Articles(i)(1)&"]]></Description>"&_
"<PicUrl><![CDATA["&Articles(i)(2)&"]]></PicUrl>"&_
"<Url><![CDATA["&Articles(i)(3)&"]]></Url>"&_
"</item>"
Next
str = str & "</Articles>"&_
"</xml>"
Response.Write str
End Function
'文本消息
Function Return_Text(Content)
str = "<xml>"&_
"<ToUserName><![CDATA["&FromUserName&"]]></ToUserName>"&_
"<FromUserName><![CDATA["&ToUserName&"]]></FromUserName>"&_
"<CreateTime>"&DateDiff("s","1970-01-01 08:00:00",Now())&"</CreateTime>"&_
"<MsgType><![CDATA[text]]></MsgType>"&_
"<Content><![CDATA["&Content&"]]></Content>"&_
"</xml>"
Response.Write str
End Function
'字典排序
Function Sort(ary)
Dim KeepChecking,I,FirstValue,SecondValue
KeepChecking = TRUE
Do Until KeepChecking = FALSE
KeepChecking = FALSE
For I = 0 to UBound(ary)
If I = UBound(ary) Then Exit For
If ary(I) > ary(I+1) Then
FirstValue = ary(I)
SecondValue = ary(I+1)
ary(I) = SecondValue
ary(I+1) = FirstValue
KeepChecking = TRUE
End If
Next
Loop
Sort = ary
End Function
Function PostHTTPPage(url,data)
dim Http
set Http=server.createobject("MSXML2.SERVERXMLHTTP.3.0")
Http.open "POST",url,false
Http.setRequestHeader "CONTENT-TYPE", "application/x-www-form-urlencoded"
Http.send(data)
if Http.readystate<>4 then
exit function
End if
PostHTTPPage=Http.responseText
set http=nothing
if err.number<>0 then err.Clear
End Function
%>