日志管理-Log4net

11/25/2015来源:ASP.NET技巧人气:521

引言

  log4net库是Apache log4j框架在Micorsoft.NET平台的实现,是一个帮组程序员将日志信息输出到各种目标(控制台、文件、数据库等)的工具。(百度百科)

  实际项目中使用log4net极大的方便程序猿记录系统运行过程中的日志信息,特别是对bs系统说是一个比较实用的工具。本文简单解释它的使用过程,都是最基本的最简单的运用,没有其他多余的解释只是简单使用。

 

使用步骤:

步骤一:

  在项目文件中创建一个类库,本例使用类库名:Log4NetUtility。引用log4net库的dll,添加配置文件log4net.cfg.xml,注意将该文件的属性设置为始终复制。配置文件都是一些固定的格式,可以做一些简单的改动。基本内容如下:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>

  <!--日志记录组建配置-->
  <log4net debug="true">
    <!-- 调试日志配置 -->
    <appender name="DebugAppender" type="log4net.Appender.DebugAppender">
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="[%date][%thread][%-5level][%c] - %message%newline" />
      </layout>
    </appender>

    <!-- 文件日志配置 -->
    <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <staticLogFileName value="false"/>
      <maxSizeRollBackups value="-1" />
      <datePattern value="yyyy-MM-dd_HH'.log'" />
      <lockingModel value="log4net.Appender.FileAppender.MinimalLock" />
      <file value="Log\\" />
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="[%date][%thread][%-5level]%message%newline" />
      </layout>
    </appender>

    <!-- Setup the root category, add the appenders and set the default PRiority -->
    <root>
      <level value="ALL" />
      <appender-ref ref="DebugAppender" />
    </root>

    <logger name="FileLogLogger" additivity="false">
      <level value="ALL" />
      <appender-ref ref="RollingLogFileAppender" />
    </logger>
  </log4net>
</configuration>

 

步骤二:

  编写日志方法,如下:

public class Log4NetUtility
    {
        private static ILog fileLogger = LogManager.GetLogger("FileLogLogger");
        private static ILog debugLogger = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
        static Log4NetUtility()
        {
            string binPath = System.AppDomain.CurrentDomain.BaseDirectory;
            string webFfileName = binPath + @"bin\Config\log4net.cfg.xml";
            string appFileName = binPath + @"Config\log4net.cfg.xml";
            if (File.Exists(webFfileName))
                log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(webFfileName));
            else if (File.Exists(appFileName))
                log4net.Config.XmlConfigurator.ConfigureAndWatch(new FileInfo(appFileName));
            else
                Console.WriteLine("找不到Log4net配置文件");
        }
        public static void DebugLog(String message)
        {
            debugLogger.Debug(message);
        }
        public static void Debug(object o, string message, Exception exception)
        {
            Type type = o.GetType();
            fileLogger.Debug(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message), exception);
        }
        public static void Debug(object o, String message)
        {
            Type type = o.GetType();
            fileLogger.Debug(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message));
        }
        public static void Debug(String typeName, String message, Exception exception)
        {
            fileLogger.Debug(string.Format("[{0}] - {1}", typeName, message), exception);
        }
        public static void Debug(String typeName, String message)
        {
            fileLogger.Debug(string.Format("[{0}] - {1}", typeName, message));
        }
        public static void Info(object o, String message, Exception exception)
        {
            Type type = o.GetType();
            fileLogger.Info(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message), exception);
        }
        public static void Info(object o, String message)
        {
            Type type = o.GetType();
            fileLogger.Info(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message));
        }
        public static void Info(string typeName, String message, Exception exception)
        {
            fileLogger.Info(string.Format("[{0}] - {1}", typeName, message), exception);
        }
        public static void Info(string typeName, String message)
        {
            fileLogger.Info(string.Format("[{0}] - {1}", typeName, message));
        }
        public static void Warn(object o, String message, Exception exception)
        {
            Type type = o.GetType();
            fileLogger.Warn(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message), exception);
        }
        public static void Warn(object o, String message)
        {
            Type type = o.GetType();
            fileLogger.Warn(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message));
        }
        public static void Warn(string typeName, String message, Exception exception)
        {
            fileLogger.Warn(string.Format("[{0}] - {1}", typeName, message), exception);
        }
        public static void Warn(string typeName, String message)
        {
            fileLogger.Warn(string.Format("[{0}] - {1}", typeName, message));
        }
        public static void Error(object o, String message, Exception exception)
        {
            Type type = o.GetType();
            fileLogger.Error(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message), exception);
        }
        public static void Error(object o, String message)
        {
            Type type = o.GetType();
            fileLogger.Error(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message));
        }
        public static void Error(string typeName, String message, Exception exception)
        {
            fileLogger.Error(string.Format("[{0}] - {1}", typeName, message), exception);
        }
        public static void Error(string typeName, String message)
        {
            fileLogger.Error(string.Format("[{0}] - {1}", typeName, message));
        }
        public static void Fatal(object o, String message, Exception exception)
        {
            Type type = o.GetType();
            fileLogger.Fatal(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message), exception);
        }
        public static void Fatal(object o, String message)
        {
            Type type = o.GetType();
            fileLogger.Fatal(string.Format("[{0}.{1}] - {2}", type.Namespace, type.Name, message));
        }
        public static void Fatal(string typeName, String message, Exception exception)
        {
            fileLogger.Fatal(string.Format("[{0}] - {1}", typeName, message), exception);
        }
        public static void Fatal(string typeName, String message)
        {
            fileLogger.Fatal(string.Format("[{0}] - {1}", typeName, message));
        }
    }

 

步骤三:

  系统内进行调用:

Log4NetUtility.Log4NetUtility .Error(this, "log4net日志错误记录");

 

  至此,log4net的简单应用就介绍完了,本文还是那句话,就是介绍它的一些简单用法,告诉你如何使用它,具体其内部的原理还有更深层的东西还是交给以后吧。