/// <summary>
/// ResponseMessageBase.CreateFromResponseXml(xml)的扩展方法
/// 从返回结果XML转换成IResponseMessageBase实体类
/// </summary>
/// <param name="xml">返回给服务器的Response Xml</param>
/// <returns></returns>
public static ResponseMessageBase CreateResponseMessage(this string xml)
{
try
{
if (string.IsNullOrEmpty(xml))
{
return(null);
}
var doc = XDocument.Parse(xml);
ResponseMessageBase responseMessage = null;
var msgType = (ResponseMsgType)Enum.Parse(typeof(ResponseMsgType), doc.Root.Element("MsgType").Value, true);
switch (msgType)
{
case ResponseMsgType.Text:
responseMessage = new ResponseMessageText();
break;
case ResponseMsgType.Image:
responseMessage = new ResponseMessageImage();
break;
case ResponseMsgType.Voice:
responseMessage = new ResponseMessageVoice();
break;
case ResponseMsgType.Video:
responseMessage = new ResponseMessageVideo();
break;
case ResponseMsgType.Music:
responseMessage = new ResponseMessageMusic();
break;
case ResponseMsgType.News:
responseMessage = new ResponseMessageNews();
break;
}
responseMessage.FillEntityWithXml(doc);
return(responseMessage);
}
catch (Exception ex)
{
throw new WeiXinException("ResponseMessageBase.CreateFromResponseXml<T>过程发生异常！" + ex.Message, ex);
}
}
/// <summary>
/// 获取XDocument转换后的IResponseMessageBase实例（通常在反向读取日志的时候用到）。
/// 如果MsgType不存在，抛出UnknownRequestMsgTypeException异常
/// </summary>
/// <returns></returns>
public static IResponseMessageBase GetResponseEntity(XDocument doc)
{
ResponseMessageBase responseMessage = null;
ResponseMsgType msgType;
try
{
msgType = MsgTypeHelper.GetResponseMsgType(doc);
switch (msgType)
{
case ResponseMsgType.Text:
responseMessage = new ResponseMessageText();
break;
case ResponseMsgType.Image:
responseMessage = new ResponseMessageImage();
break;
case ResponseMsgType.Voice:
responseMessage = new ResponseMessageVoice();
break;
case ResponseMsgType.Video:
responseMessage = new ResponseMessageVideo();
break;
case ResponseMsgType.News:
responseMessage = new ResponseMessageNews();
break;
default:
throw new UnknownRequestMsgTypeException(string.Format("MsgType：{0} 在ResponseMessageFactory中没有对应的处理程序！", msgType), new ArgumentOutOfRangeException());
}
responseMessage.FillEntityWithXml(doc);
}
catch (ArgumentException ex)
{
throw new WeixinException(string.Format("ResponseMessage转换出错！可能是MsgType不存在！，XML：{0}", doc), ex);
}
return(responseMessage);
}
/// <summary>
/// 从返回结果XML转换成IResponseMessageBase实体类（通常在反向读取日志的时候用到）。
/// </summary>
/// <returns></returns>
public static IResponseMessageBase GetResponseEntity(XDocument doc)
{
ResponseMessageBase val = null;
try
{
ResponseMsgType responseMsgType = MsgTypeHelper.GetResponseMsgType(doc);
switch (responseMsgType)
{
case ResponseMsgType.Text:
val = new ResponseMessageText();
break;
case ResponseMsgType.Image:
val = new ResponseMessageImage();
break;
case ResponseMsgType.Voice:
val = new ResponseMessageVoice();
break;
case ResponseMsgType.Video:
val = new ResponseMessageVideo();
break;
case ResponseMsgType.Music:
val = new ResponseMessageMusic();
break;
case ResponseMsgType.News:
val = new ResponseMessageNews();
break;
}
val.FillEntityWithXml <ResponseMessageBase>(doc);
return(val);
}
catch (Exception ex)
{
throw new Exception($"ResponseMessage转换出错！可能是MsgType不存在！，XML：{doc.ToString()}", ex);
}
}