public void ExecuteTest_EncryptMessageHandle()
{
const string xml = @"<xml>
<ToUserName><![CDATA[wx5823bf96d3bd56c7]]></ToUserName>
<Encrypt><![CDATA[RypEvHKD8QQKFhvQ6QleEB4J58tiPdvo+rtK1I9qca6aM/wvqnLSV5zEPeusUiX5L5X/0lWfrf0QADHHhGd3QczcdCUpj911L3vg3W/sYYvuJTs3TUUkSUXxaccAS0qhxchrRYt66wiSpGLYL42aM6A8dTT+6k4aSknmPj48kzJs8qLjvd4Xgpue06DOdnLxAUHzM6+kDZ+HMZfJYuR+LtwGc2hgf5gsijff0ekUNXZiqATP7PF5mZxZ3Izoun1s4zG4LUMnvw2r+KqCKIw+3IQH03v+BCA9nMELNqbSf6tiWSrXJB3LAVGUcallcrw8V2t9EL4EhzJWrQUax5wLVMNS0+rUPA3k22Ncx4XXZS9o0MBH27Bo6BpNelZpS+/uh9KsNlY6bHCmJU9p8g7m3fVKn28H3KDYA5Pl/T8Z1ptDAVe0lXdQ2YoyyH2uyPIGHBZZIs2pDBS8R07+qN+E7Q==]]></Encrypt>
</xml>";
WeixinMessageContext context = new WeixinMessageContext()
{
HttpRequestContent = xml,
HttpRequestParams = new HttpRequestParams()
{
Encrypt_Type = "aes",
Signature = "d2157f2f9079f4d6257b45edf665c43c62e60a0a",
Timestamp = "1409659813",
Nonce = "1372623149",
Msg_Signature = "477715d11cdb4164915debcba66cb864d751f3e6"
}
};
WeixinMessageHandler handler = new WeixinMessageHandler(context);
string content = handler.Execute();
Assert.NotNull(content);
Assert.True(content.Length > 0);
//解密校验结果是否正确，
dynamic resultXmlObj = new DynamicXml(content);
Assert.Equal(context.HttpRequestParams.Timestamp, resultXmlObj.TimeStamp.Value);
Assert.Equal(context.HttpRequestParams.Nonce, resultXmlObj.Nonce.Value);
Assert.True(resultXmlObj.Encrypt.Value.Length > 0);
//获取消息签名 后期解密字符串使用。
string msgSignature = resultXmlObj.MsgSignature.Value;
Assert.True(msgSignature.Length > 0);
string sMsg = string.Empty;
WeixinMsgCrypto msgCrypto = new WeixinMsgCrypto();
int resultXmlDecryptResult = msgCrypto.DecryptMsg(msgSignature, context.HttpRequestParams.Timestamp, context.HttpRequestParams.Nonce, content, ref sMsg);
Assert.Equal(Convert.ToInt32(WeixinMsgCryptoErrorCode.OK), resultXmlDecryptResult);
Assert.True(sMsg.Length > 0);
//解密后的 xml 结果 测试。
dynamic contentXmlObj = new DynamicXml(sMsg);
Assert.Equal("mycreate", contentXmlObj.ToUserName.Value);
Assert.Equal("wx5823bf96d3bd56c7", contentXmlObj.FromUserName.Value);
Assert.True(Convert.ToInt64(contentXmlObj.CreateTime.Value) > 0);
Assert.Equal("text", contentXmlObj.MsgType.Value);
Assert.Equal("hello", contentXmlObj.Content.Value);
}
/// <summary>
/// 执行消息处理。
/// </summary>
private void ExecMessageHandler()
{
#region 参数校验
if (string.IsNullOrEmpty(this.MessageContext.HttpRequestContent))
{
throw new StringNullOrEmptyException("HttpRequestContent");
}
if (this.MessageContext.HttpRequestParams == null)
{
throw new StringNullOrEmptyException("HttpRequestParams");
}
#endregion
#region 初始化参数
this._requestParams = this.MessageContext.HttpRequestParams;
this._requestContent = this.MessageContext.HttpRequestContent;
#endregion
#region 校验签名
CheckSignature.Execute(this._requestParams.Signature, this._requestParams.Timestamp, this._requestParams.Nonce, string.Empty);
#endregion
#region 消息解密
if (this._requestParams.IsEncrypt)
{
this._msgCrypto = new WeixinMsgCrypto();
int decryptMsgResult = this._msgCrypto.DecryptMsg(this._requestParams.Msg_Signature, this._requestParams.Timestamp, this._requestParams.Nonce, this._requestContent, ref this._requestContent);
if (decryptMsgResult != Convert.ToInt32(WeixinMsgCryptoErrorCode.OK))
{
throw new Exception("消息解密失败！");
}
}
#endregion
//消息解析。
this._requestMessage = RequestMessageProcess.Parse(this._requestContent);
if (this._requestMessage == null)
{
this._responeContent = string.Empty;
//记录日志。
WeixinApp.Logger.Info($"消息未处理，requestContent:{this._requestContent}");
return;
}
#region 会话支持
//todo: 后期实现。
#endregion
#region 消息去重
#region 除无效的消息标识
for (int i = 0; i < _messageIdentitys.Count; i++)
{
KeyValuePair <string, DateTime> item = _messageIdentitys[i];
//如果消息处理时间大于 30 秒则删除该条标识。
if (item.Value.AddSeconds(30) < DateTime.Now)
{
_messageIdentitys.Remove(item);
}
}
#endregion
string msgIdentity = this.GetMessageIdentity(this._requestMessage);
//如果消息已经被标识为处理则返回空字符串，
if (_messageIdentitys.Any(i => i.Key == msgIdentity))
{
this._responeContent = string.Empty;
//记录日志。
WeixinApp.Logger.Info($"消息重复，已经响应空字符串消息,消息标识：[{msgIdentity}]\r\n请求内容：{_requestContent}");
return;
}
//将当前消息标识添加到标识列表中，
_messageIdentitys.Add(new KeyValuePair <string, DateTime>(msgIdentity, DateTime.Now));
#endregion
//消息处理。
this._responeContent = RequestMessageProcess.ProcessByConfig(this._requestContent);
#region 消息加密
if (this._requestParams.IsEncrypt)
{
int encryptMsgResult = this._msgCrypto.EncryptMsg(this._responeContent, this._requestParams.Timestamp, this._requestParams.Nonce, ref this._responeContent);
if (encryptMsgResult != Convert.ToInt32(WeixinMsgCryptoErrorCode.OK))
{
throw new Exception("消息加密失败！");
}
}
#endregion
}
