2018-08-23 14:38:05
.Net中Log4Net的使用
一、log4net 分类型记录日志存放多个日志文件
1、在webconfig里添加配置
1.1 在<configSections> 中添加节点
1 <configSections>2 <configSections>3 ????<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>4 ??</configSections>5 </configSections>
1.2 添加log4net配置section
<log4net> ???<appender name="fatalAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="FATAL" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\fatal.log" /> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /> ?????</layout> ???</appender> ???<appender name="errorAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="ERROR" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\err.log" /> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /> ?????</layout> ???</appender> ???<appender name="warnAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="WARN" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\warn.log" /> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /> ?????</layout> ???</appender> ???<appender name="infoAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="INFO" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\info.log" /> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /> ?????</layout> ???</appender> ???<appender name="debugAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="DEBUG" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\debug.log" /> <!--这里可以配置日志存放位置--> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" /> ?????</layout> ???</appender> ???<appender name="perfAppender" type="log4net.Appender.RollingFileAppender"> ?????<filter type="log4net.Filter.LevelMatchFilter"> ???????<levelToMatch value="INFO" /> ?????</filter> ?????<filter type="log4net.Filter.DenyAllFilter" /> ?????<File value="Logs\perf.log" /> ?????<appendToFile value="true" /> ?????<rollingStyle value="Date" /> ?????<datePattern value="yyyyMMdd" /> ?????<layout type="log4net.Layout.PatternLayout"> ???????<conversionPattern value="%date %logger - %message%newline" /> ?????</layout> ???</appender> ???<root> ?????<level value="ALL" /> ?????<appender-ref ref="fatalAppender" /> ?????<appender-ref ref="errorAppender" /> ?????<appender-ref ref="warnAppender" /> ?????<appender-ref ref="infoAppender" /> ?????<appender-ref ref="debugAppender" /> ???</root> ?</log4net>
2、在Global.asax.cs里添加
log4net.Config.XmlConfigurator.Configure();
3、添加 helper类
using log4net;using System;using System.Collections.Generic;using System.Linq;using System.Web;namespace TestLog4Net{ ???public class log4netHelper ???{ ???????public static void Fatal(Type type, object message, Exception exception = null) ???????{ ???????????ILog log = LogManager.GetLogger(type); ???????????if (exception == null) ???????????????log.Fatal(message); ???????????else ???????????????log.Fatal(message, exception); ???????} ???????public static void Error(Type type, object message, Exception exception = null) ???????{ ???????????ILog log = LogManager.GetLogger(type); ???????????if (exception == null) ???????????????log.Error(message); ???????????else ???????????????log.Error(message, exception); ???????} ???????public static void Warn(Type type, object message, Exception exception = null) ???????{ ???????????ILog log = LogManager.GetLogger(type); ???????????if (exception == null) ???????????????log.Warn(message); ???????????else ???????????????log.Warn(message, exception); ???????} ???????public static void Info(Type type, object message, Exception exception = null) ???????{ ???????????ILog log = LogManager.GetLogger(type); ???????????if (exception == null) ???????????????log.Info(message); ???????????else ???????????????log.Info(message, exception); ???????} ???????public static void Debug(Type type, object message, Exception exception = null) ???????{ ???????????ILog log = LogManager.GetLogger(type); ???????????if (exception == null) ???????????????log.Debug(message); ???????????else ???????????????log.Debug(message, exception); ???????} ???}}4、代码里使用
??ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);//获取一个日志记录器 ???????????log4netHelper.Fatal(this.GetType(), "Fatal"); ??????????????????????????//致命错误 ???????????log4netHelper.Error(this.GetType(), "Error", new Exception("error")); ??//错误 ???????????log4netHelper.Warn(this.GetType(), "Warn"); ????????????????????????????//禁告 ???????????log4netHelper.Info(this.GetType(), "Info"); ????????????????????????????//信息 ???????????log4netHelper.Debug(this.GetType(), "Debug"); ??????????????????????????//调试
FATAL（致命错误）：记录系统中出现的能使用系统完全失去功能，服务停止，系统崩溃等使系统无法继续运行下去的错误。例如，数据库无法连接，系统出现死循环。
ERROR（一般错误）：记录系统中出现的导致系统不稳定，部分功能出现混乱或部分功能失效一类的错误。例如，数据字段为空，数据操作不可完成，操作出现异常等。
WARN（警告）：记录系统中不影响系统继续运行，但不符合系统运行正常条件，有可能引起系统错误的信息。例如，记录内容为空，数据内容不正确等。
INFO（一般信息）：记录系统运行中应该让用户知道的基本信息。
DEBUG （调试信息）：记录系统用于调试的一切信息，内容或者是一些关键数据内容的输出。
二、存放单个日志
1、
.Net中Log4Net的使用
原文地址：https://www.cnblogs.com/i-mengli/p/9523440.html