微信公众号接口开发心得

1 仔细阅读开发者文档,逻辑关系要捋顺.
2 appid, appsecret, mch_id, key 之间的关系要弄清.
3 统一下单api传xml格式.
4 当签名错误产生时,一定要先检查各个字段的key和value书写是否正确,也要注意key和mch_id是否匹配.
5 微信返回的数据只能发送到服务端(Ajax无效)
6 生成签名时可以用签名校验工具生成.

asp 代码如下:

<%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
<%Session.CodePage=65001%> 
<%Response.Charset = "utf-8"%> 
<%
Response.Buffer = True 
Response.ExpiresAbsolute = Now() - 1 
Response.Expires = 0 
Response.CacheControl = "no-cache" 
Response.AddHeader "Pragma", "No-Cache"
%>
<%
Function getXML(url)
     Dim sttp
     Set sttp = server.createobject("MSXML2.XMLHTTP")
     sttp.open "GET",url,false, "", ""
     sttp.send()
     getXML = bBytesToBstr(sttp.responseBody) 
     Set sttp = Nothing 
End Function 

Function bBytesToBstr(body)
    dim objstream
    set objstream = CreateObject("adodb.stream") '//调用adodb.stream组件
    objstream.Type = 1
    objstream.Mode =3
    objstream.Open
    objstream.Write body
    objstream.Position = 0
    objstream.Type = 2
    objstream.Charset = "GB2312" '转换原来默认的UTF-8编码转换成GB2312编码，否则直接用XMLHTTP调用有中文字符的网页得到的将是乱码
    bBytesToBstr = objstream.ReadText
    objstream.Close
    set objstream = nothing
end Function

%>

<%
dim code
code = request("code")
dim appid 
appid = "*******"
dim secret
secret = "*********"

'response.write(code)

Dim Str
Str = getXML("https://api.weixin.qq.com/sns/oauth2/access_token?appid="&appid&"&secret="&secret&"&code="&Code&"&grant_type=authorization_code")

response.write(str)
%>