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-  Foxtable(狐表)  (http://foxtable.com/bbs/index.asp)
--  专家坐堂  (http://foxtable.com/bbs/list.asp?boardid=2)
----  微信 网页简单授权 的例子中 收不到 openid  (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=157113)

--  作者:xa139
--  发布时间:2020/10/3 22:02:00
--  微信 网页简单授权 的例子中 收不到 openid
If e.host = "wexin.foxtable.com" Then \'需要授权才能访问的域名

exin.foxtable.com这里已改需要的地址)
 
    Dim OpenID As String
    Dim sb As New StringBuilder
   
sb.AppendLine("<meta name=\'viewport\' c>")
    If e.GetValues.ContainsKey("code") Then \'
如果通过授权链接跳转而来,就根据传递过来的code参数调用接口,获取用户的OpenID
       
Dim ul As String  = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code"
        ul = CExp(ul,"wx8acdb7df5beb68fd","a5a3b06a790d4200a151e6b13c3dc263",e.GetValues("code"))
           
wx8acdb7df5beb68fd这里已改为开发id) 
                         (
a5a3b06a790d4200a151e6b13c3dc263  这里不清楚是什么意思需要怎么调整

        Dim hc As new HttpClient(ul)
        Dim jo As JObject = JObject.Parse(hc.GetData)
        If jo("openid") IsNot Nothing Then
            OpenID = jo("openid")
            e.AppendCookie("openid",OpenID) \'将openid存储在Cookie中
        End If
    Else
        OpenIde.Cookies("openid") \'否则从cookie中提取openid
    End If
    Dim Verified As Boolean
    Dim dr As DataRow = DataTables("WXUsers").Find("openid  =\'" & OpenID & "\'") \'根据openid找出对应的行
    If OpenId > "" AndAlso dr IsNot Nothing AndAlso dr("permit") = True \'授权成功
        Verified  = True
    ElseIf e.GetValues.ContainsKey("code") = False Then \'如果授权失败,且不是通过授权链接跳转而来,那么就跳转到授权链接
        Dim ul As String = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=wx8acdb7df5beb68fd&redirect_uri=http%3a%2f%2fwexin.foxtable.com&response_type=code&scope=snsapi_base&state=123#wechat_redirect"
        sb.Append("<meta http-equiv=\'Refresh\' c>") \'跳转到授权链接
        e.WriteString(sb.ToString)
        Return
    End If
    If Verified = False Then
        sb.AppendLine("你无权访问本系统")
    Else
        sb.AppendLine("Foxtable欢迎您, <a href=\'http://wexin.foxtable.com\'>刷新页面</a>")
    End If
    e.WriteString(sb.ToString)

End
If

--  作者:新福星
--  发布时间:2020/10/4 6:42:00
--  

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