// ReSharper disable PossibleNullReferenceException
/// <summary>
/// 根据 XML 字符串生成 RequestMessage 对象
/// </summary>
/// <param name="xmlString">解密后的 xml 字符串</param>
/// <returns></returns>
public static RequestMessage Parse(string xmlString)
{
var xml = XDocument.Parse(xmlString).Root;
RequestMessageType msgType;
if (!Enum.TryParse(xml.Element("MsgType").Value.ToLowerInvariant(), out msgType))
{
msgType = RequestMessageType.unknown;
}
var result = msgType == RequestMessageType.unknown
? new UnknownRequestMessage(xml)
: msgType == RequestMessageType.@event
? (RequestMessage)EventMessage.Parse(xml)
: NormalRequestMessage.Parse(xml, msgType);
result.MsgType = msgType;
return(result);
}
// ReSharper disable PossibleNullReferenceException
public static NormalRequestMessage Parse(XElement xml, RequestMessageType type)
{
NormalRequestMessage result = null;
switch (type)
{
case RequestMessageType.text:
result = new TextRequestMessage(xml);
break;
case RequestMessageType.image:
result = new ImageRequestMessage(xml);
break;
case RequestMessageType.voice:
result = new VoiceRequestMessage(xml);
break;
case RequestMessageType.video:
result = new VideoRequestMessage(xml);
break;
case RequestMessageType.shortvideo:
result = new ShortVideoRequestMessage(xml);
break;
case RequestMessageType.location:
result = new LocationRequestMessage(xml);
break;
case RequestMessageType.link:
result = new LinkRequestMessage(xml);
break;
default:
throw new ArgumentOutOfRangeException();
}
return(result);
}
