Dim sb As New StringBuilder
sb.AppendLine("<meta name='viewport' c>")
If e.host = "wexin.foxtable.com" Then '授权测试
Dim UserName As String
Dim OpenID As String
If e.GetValues.ContainsKey("code") Then '如果是通过授权链接跳转而来,就从链接重提取code来获取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","dec0df8a469518df30e9bdef0758c678",e.GetValues("code"))
Dim hc As new HttpClient(ul)
Dim jo As JObject = JObject.Parse(hc.GetData)
If jo("openid") IsNot Nothing Then '如果获取openid成功(成功的话,还会同时返回一个accesstiken,用于获取用户详情)
OpenID = jo("openid")
Dim dr As DataRow = DataTables("WXUsers").Find("openid ='" & Openid & "'")
If dr IsNot Nothing Then
UserName = dr("nickname")
Else
ul = "https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}&lang=zh_CN "
'根据openid和accesstoken获取用户详情,注意这里这个accesstoken不是普通accesston,只能用于网页授权
hc = New HttpClient(CExp(ul, jo("access_token"), OpenId))
jo = jo.Parse(hc.GetData)
If jo("openid") IsNot Nothing Then
UserName = jo("nickname")
dr = DataTables("WXUsers").AddNew()
Dim nms() As String = {"openid","nickname","sex","city","country","province","headimgurl"} '""
For Each nm As String In nms
dr(nm) = jo(nm)
Next
dr.Save
Else
e.WriteString(jo.ToString) '在用户浏览器显示错误信息
Return
End If
End If
e.AppendCookie("username",UserName) '用户名和openid存储在Cookie中
e.AppendCookie("openid",OpenID)
Else
e.WriteString(jo.ToString) '在用户浏览器显示错误信息
Return
End If
Else
UserName = e.Cookies("username") '从cookie获取用户名和openid
OpenID = e.Cookies("openid")
If userName = "" OrElse OpenID = "" Then
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_userinfo&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
End If
If OpenID > "" And UserName > "" Then
'这里可以做进一步的权限判断
sb.AppendLine("欢迎" & UserName & "光临, <a href='http://wexin.foxtable.com'>刷新页面</a>")
Else
sb.AppendLine("你无权访问本系统")
End If
End If
e.WriteString(sb.ToString)
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