使用log4net生成带有自定义布局/字段的json格式日志?

我们已经这样做了一段时间,可以使用动态对象来完成。我们有不同的日志事件类型,它们是集中式的,这允许灵活地添加所需的任何信息。loggingEvent事件对象来自log4net,是自定义appender中的一个append覆盖。

JsonSerializerSettings _jsonSerializerSettings = new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore };

dynamic m = new System.Dynamic.ExpandoObject();
m.SessionId = _sessionId;
m.ProcessId = _processId.ToString();
m.ProcessName = _processName;
m.MachineName = _machineName;
m.UserName = _userName;
m.Level = loggingEvent.Level.DisplayName;
m.Domain = loggingEvent.Domain;
m.TimeStamp = loggingEvent.TimeStamp.ToString("yyyyMMddHHmmssfff");
m.MessageObject = loggingEvent.MessageObject;
if (loggingEvent.ExceptionObject != null)
{
  m.Exception = loggingEvent.ExceptionObject.ToString();
  m.StackTrace = loggingEvent.ExceptionObject.StackTrace;
}

//Convert the object to a json string
string msg = JsonConvert.SerializeObject(m, Formatting.None, _jsonSerializerSettings);