Log4net工具类如何改写以适应长尾词需求，实现高效日志记录？

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csharpusing log4net;using log4net.Config;using System;using System.Collections.Generic;using System.Configuration;using System.IO;

namespace SARC.Infrastructure.Util{ public static class LogUtil { private static readonly ILog _logger=LogManager.GetLogger(typeof(LogUtil)); private const string _ROOTLOOGER_NAME=ROOT; }}

using log4net; using log4net.Config; using System; using System.Collections.Generic; using System.Configuration; using System.IO; namespace SARC.Infrastructure.Util { public static class LogUtil { private const string _ROOTLOOGER__NAME = "ROOT"; private static readonly Dictionary<string, ILog> _Loggers = new Dictionary<string, ILog>(); private static readonly object _LockerForAddLogger = null; static LogUtil() { _LockerForAddLogger = new object(); _loadFromFile(); } #region 取logger // 使用程序入口自定义的log4net配置文件 private static void _loadFromFile() { string log4NetConfigPath = AppConfigUtil.GetAppConfig("log4net_config"); // app/web.config file has a "log4net_config" configure value if (!string.IsNullOrEmpty(log4NetConfigPath)) { log4NetConfigPath = FileUtil.CheckAndFillUpPath(log4NetConfigPath); XmlConfigurator.ConfigureAndWatch(new FileInfo(log4NetConfigPath)); } else { var type = typeof(LogUtil); var stream = type.Assembly.GetManifestResourceStream(type, "log4net_config"); XmlConfigurator.Configure(stream); } } private static ILog _initialLogger(string logName) { ILog logger; if (logName == _ROOTLOOGER__NAME) { Type tp = System.Reflection.MethodBase.GetCurrentMethod().DeclaringType; logger = LogManager.GetLogger(tp); } else { logger = LogManager.Exists(logName); } if (logger == null) { throw new ConfigurationErrorsException(logName + " does not exist."); } return logger; } #endregion // 取得 "log4net.config" 文件里的ROOT logger public static ILog GetLogger(string loggerName) { if (!_Loggers.ContainsKey(loggerName)) { lock (_LockerForAddLogger) { if (!_Loggers.ContainsKey(loggerName)) { ILog log = _initialLogger(loggerName); _Loggers.Add(loggerName, log); _writeLevel(log, loggerName); } } } return _Loggers[loggerName]; } private static void _writeLevel(ILog logger, string loggerName) { logger.FatalFormat("[Begin {0} in {1}]", loggerName, AppDomain.CurrentDomain.BaseDirectory); logger.Fatal("开启的级别:\r\nFATAL:" + logger.IsFatalEnabled + "\r\nERROR:" + logger.IsErrorEnabled + "\r\nWARN:" + logger.IsWarnEnabled + "\r\nINFO:" + logger.IsInfoEnabled + "\r\nDEBUG:" + logger.IsDebugEnabled); } /// <summary> /// 默认ILog，文件为Main.log /// </summary> public static ILog Default { get { return GetLogger(_ROOTLOOGER__NAME); } } } }

调用

LogUtil.Default.Info("");

LogUtil.Default.Error("");

LogUtil.Default.Warn("");

LogUtil.Default.Debug("");