/// <summary>
/// 根据Post参数获取对应处理事件
/// </summary>
/// <param name="postParamater"></param>
/// <returns></returns>
public static WeChatHandle GetWeChatHandle(U_WeChatCallbackParameter wcp, Stream inputStream)
{
string postParamater = WeChatCallbackLogic.GetPostParameter(wcp, inputStream);
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(new System.IO.MemoryStream(System.Text.Encoding.GetEncoding("GB2312").GetBytes(postParamater)));
XmlNode MsgType = xmldoc.SelectSingleNode("/xml/MsgType");
WeChatHandle weChatHandle = null;
if (MsgType != null)
{
switch (MsgType.InnerText)
{
case "event":
weChatHandle = new WeChatEventHandle(wcp, xmldoc); //事件处理
break;
case "text":
weChatHandle = new WeChatTextHandle(wcp, xmldoc); //事件处理
break;
default:
break;
}
}
return(weChatHandle);
}
public static string GetPostParameter(U_WeChatCallbackParameter wcp, Stream inputStream)
{
Byte[] postBytes = new Byte[inputStream.Length];
inputStream.Read(postBytes, 0, (Int32)inputStream.Length);
string postString = Encoding.UTF8.GetString(postBytes);
string postParmater = WeChatCallbackLogic.DecryptMessage(wcp, postString);
return(postParmater);
}
/// <summary>
/// 被动响应给微信的数据加密
/// </summary>
/// <param name="wcp"></param>
/// <param name="postString"></param>
/// <param name="message"></param>
/// <returns></returns>
public static string EncryptMessage(U_WeChatCallbackParameter wcp, string postString, string message)
{
WXBizMsgCrypt wxcpt = new WXBizMsgCrypt(ConfigSugar.GetAppString("WeChatCallbackToken"), ConfigSugar.GetAppString("WeChatCallbackEncodingAESKey"), ConfigSugar.GetAppString("CorpID"));
string result = postString;
int errorCode = wxcpt.EncryptMsg(message, wcp.timestamp, wcp.nonce, ref result);
if (errorCode != 0)
{
//错误记录日志
LogHelper.WriteLog(errorCode.ToString());
}
return(result);
}
/// <summary>
/// 开启微信回调模式
/// </summary>
/// <returns></returns>
public string OpenWeChatCallbackMode(U_WeChatCallbackParameter wcp)
{
//数据不为空，表示验证开启微信回调模式
//数据为空，表示微信数据正常回调
if (!string.IsNullOrEmpty(wcp.echostr))
{
string corpid = "";
string echostr = Cryptography.AES_decrypt(wcp.echostr, ConfigSugar.GetAppString("WeChatCallbackEncodingAESKey"), ref corpid);
return(echostr);
}
else
{
WeChatHandle wch = WeChatEventFactory.GetWeChatHandle(wcp, Request.InputStream);
return(wch.ExecuteEventHandle());
}
}
/// <summary>
/// 构造一个新的微信事件处理类型
/// </summary>
/// <param name="xmldoc"></param>
public WeChatEventHandle(U_WeChatCallbackParameter wcp, XmlDocument xmldoc)
{
_wcp = wcp;
AnalysisParameter(xmldoc);
}
