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> <log4net debug="true"> <appender name="DebugAppender" type="log4net.Appender.DebugAppender"> <layout type="log4net.Layout.PatternLayout"> <conversionPattern value="[%date][%thread][%-5level][%c] - %message%newline" /> layout> appender> <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> <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。