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  • 日志管理-Log4net

    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 + @"binConfiglog4net.cfg.xml";
                string appFileName = binPath + @"Configlog4net.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。

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  • 原文地址:https://www.cnblogs.com/ysyn/p/4347080.html
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