ASP微信端开发获取用户openid

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UsersManage userbll = new UsersManage();
UsersModels usermodel = new UsersModels();
public void ProcessRequest(HttpContext context)
{
string token = "fengcheng";
if (string.IsNullOrEmpty(token))
{
return;
}

string echoString = HttpContext.Current.Request.QueryString["echoStr"];
string signature = HttpContext.Current.Request.QueryString["signature"];
string timestamp = HttpContext.Current.Request.QueryString["timestamp"];
string nonce = HttpContext.Current.Request.QueryString["nonce"];

if (!string.IsNullOrEmpty(echoString))
{
HttpContext.Current.Response.Write(echoString);
HttpContext.Current.Response.End();
}
string openid = context.Request["openid"].ToString();
string weixin = "";
weixin = PostInput();//获取xml数据
if (!string.IsNullOrEmpty(weixin))
{
ResponseMsg(weixin, context);//调用消息适配器
}
//和页面申请地址的一样是自己取的要和页面那个一样

//context.Response.ContentType = "text/plain";
//context.Response.Write(GetUserInfo("",openid)); ;
}
private class ExmlMsg
{
/// <summary>
/// 本公众账号
/// </summary>
public string ToUserName { get; set; }
/// <summary>
/// 用户账号
/// </summary>
public string FromUserName { get; set; }
/// <summary>
/// 发送时间戳
/// </summary>
public string CreateTime { get; set; }
/// <summary>
/// 发送的文本内容
/// </summary>
public string Content { get; set; }
/// <summary>
/// 消息的类型
/// </summary>
public string MsgType { get; set; }
/// <summary>
/// 事件名称
/// </summary>
public string EventName { get; set; }

}
private ExmlMsg GetExmlMsg(XmlElement root)
{
ExmlMsg xmlMsg = new ExmlMsg()
{
FromUserName = root.SelectSingleNode("FromUserName").InnerText,
ToUserName = root.SelectSingleNode("ToUserName").InnerText,
CreateTime = root.SelectSingleNode("CreateTime").InnerText,
MsgType = root.SelectSingleNode("MsgType").InnerText,
};
if (xmlMsg.MsgType.Trim().ToLower() == "text")
{
xmlMsg.Content = root.SelectSingleNode("Content").InnerText;
}
else if (xmlMsg.MsgType.Trim().ToLower() == "event")
{
xmlMsg.EventName = root.SelectSingleNode("Event").InnerText;
}
return xmlMsg;
}
#region 消息类型适配器
private string textCase(ExmlMsg xmlMsg)
{

int nowtime = ConvertDateTimeInt(DateTime.Now);
string msg = "";
msg = getText(xmlMsg);
string resxml = "<xml><ToUserName><![CDATA[" + xmlMsg.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + xmlMsg.ToUserName + "]]></FromUserName><CreateTime>" + nowtime + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + msg + "]]></Content><FuncFlag>0</FuncFlag></xml>";
return resxml;

}
private string getText(ExmlMsg xmlMsg)
{
string con = xmlMsg.Content.Trim();

System.Text.StringBuilder retsb = new StringBuilder(200);
retsb.Append("这里放你的业务逻辑");
//retsb.Append("接收到的消息：" + xmlMsg.Content);
retsb.Append("用户的OPEANID：" + xmlMsg.FromUserName);

return retsb.ToString();
}
/// <summary>
/// datetime转换为unixtime
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
private int ConvertDateTimeInt(System.DateTime time)
{
System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
return (int)(time - startTime).TotalSeconds;
}
private void ResponseMsg(string weixin, HttpContext context)// 服务器响应微信请求
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(weixin);//读取xml字符串
XmlElement root = doc.DocumentElement;
ExmlMsg xmlMsg = GetExmlMsg(root);
string messageType = xmlMsg.MsgType;//获取收到的消息类型。文本(text)，图片(image)，语音等。
string resxml = "";

try
{

switch (messageType)
{

case "event":
if (!string.IsNullOrEmpty(xmlMsg.EventName) && xmlMsg.EventName.Trim() == "subscribe")
{
WeiXinHelper weixinhelpe = new WeiXinHelper();
//授权页面
string url = "http://f1t7179366.imwork.net/Reg.aspx";
//刚关注时的时间，用于欢迎词
int nowtime = ConvertDateTimeInt(DateTime.Now);
string msg = "感谢您的关注，我是特工，希望多多交流" + xmlMsg.FromUserName + "<a href='"+weixinhelpe.Get_code(url)+" '>注册</a>"; //xmlMsg.FromUserName
resxml = "<xml><ToUserName><![CDATA[" + xmlMsg.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + xmlMsg.ToUserName + "]]></FromUserName><CreateTime>" + nowtime + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + msg + "]]></Content><FuncFlag>0</FuncFlag></xml>";



context.Response.Write(resxml);
}
break;
}

}
catch (Exception)
{
context.Response.Write(resxml);
}

}
#endregion
public bool IsReusable
{
get
{
return false;
}
}
#region 获取post请求数据
/// <summary>
/// 获取post请求数据
/// </summary>
/// <returns></returns>
private string PostInput()
{
Stream s = System.Web.HttpContext.Current.Request.InputStream;
byte[] b = new byte[s.Length];
s.Read(b, 0, (int)s.Length);
return Encoding.UTF8.GetString(b);
}
#endregion

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