Log4net学习笔记

发布时间：2020-12-12 15:00:23 所属栏目：MsSql教程来源：网络整理

导读：Log4net 学习笔记：主要是根据apache站点整理的: 原文链接：http://logging.apache.org/log4net/release/sdk/ ???????????? http://logging.apache.org/log4net/release/config-examples.html ? Log4net 主要类： ? Appender 附加，增加配置附加器有很多种

Log4net 学习笔记：

主要是根据apache站点整理的:

原文链接：http://logging.apache.org/log4net/release/sdk/

???????????? http://logging.apache.org/log4net/release/config-examples.html

Log4net 主要类：

Appender 附加，增加

配置附加器有很多种，主要用到的几种：

log4net.Appender.AdoNetAppender <记录到数据库配置access,sqlserver或者其他的数据库>

log4net.Appender.FileAppender <记录到记录日志到单个文件>

log4net.Appender.EventLogAppender <记录到记录日志到操作系统的事件>

log4net.Appender.RollingFileAppender <记录到记录日志到文件，可以设置文件的名字，或者多个文件>

具体应用方法：

第一步：把log4net加入到引用

第二步：配置log4net config 可以配置成数据库或者文件或者操作系统事件里面

第三步：

??? 如果是网站：

?????? 在global.asax里面新增配置

?????? void Application_Start(object sender,EventArgs e)

?????????? {

?????????????? // 在应用程序启动时运行的代码

?????????????? log4net.Config.XmlConfigurator.Configure();

?????????? }

??? 如果是web项目和winform项目或者控制台项目：

??? 要在AssemblyInfo.cs 新增

??? [assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config",Watch = true)]?

??? 或者：[assembly: log4net.Config.XmlConfigurator()]? （把log4net的配置配置在web的配置文件时）

具体常用的是 log4net.Appender.RollingFileAppender

可以根据日期生成日志文件

和log4net.Appender.FileAppender区别是后者只能生成一个文件，

log4net.Appender.FileAppender写的日志或追加或覆盖操作一个文件

还有配置写日志时：

<root>

????? <level value="ALL"/>

????? <appender-ref ref="ADONetAppender_SqlServer"/>

?</root>

?<logger name="ADONetAppender_SqlServer">

????? <level value="All"/>

????? <appender-ref ref="ADONetAppender_SqlServer"/>

????? <appender-ref ref="FileAppender"></appender-ref>

?</logger>

用后者需要在在log4net.LogManager.GetLogger 是填写正确的logger，不然获得不到节点就写不了日志

? log4net.ILog log = log4net.LogManager.GetLogger("ADONetAppender_SqlServer");

? log.Info("hello world!");

? 而前者用起来更方便，可以写出在那个类报的错

? log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

? log.Error("error",new Exception("hello world! 报错了！"));

常用配置如下：

??? <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

?????

????? <file value="log/log" />

?????

????? <appendToFile value="true"/>

?????

????? <DatePattern value="yyyyMMdd ".txt""></DatePattern>

?????

????? <maxSizeRollBackups value="1000"/>

?????

????? <maximumFileSize value="20"/>

?????

????? <param name="StaticLogFileName" value="false" />

?????

????? <param name="RollingStyle" value="Composite" />

????? <layout type="log4net.Layout.PatternLayout">

??????? <param name="ConversionPattern" value="%d [%r] [%t] %-5p %c? - %m%n%n" />

????? </layout>

</appender>

写到sqlserver的配置：

?????

????? <connectionType value="System.Data.SqlClient.SqlConnection,System.Data,Version=1.0.3300.0,Culture=neutral,PublicKeyToken=b77a5c561934e089"/>

????? <connectionString value="Server=localhost;UID=sa;PWD=sa;DataBase=log;Max Pool Size=1000"/>

????? <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message]) VALUES (@log_date,@thread,@log_level,@logger,@message)"/>

????? <parameter>

??????? <parameterName value="@log_date"/>

??????? <dbType value="DateTime"/>

??????? <!--

??????????????? <layout type="log4net.Layout.PatternLayout">

??????????????????? <conversionPattern value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}" />

??????????????? </layout>

??????????????? -->

??????? <layout type="log4net.Layout.RawTimeStampLayout"/>

????? </parameter>

????? <parameter>

??????? <parameterName value="@thread"/>

??????? <dbType value="String"/>

??????? <size value="255"/>

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%thread"/>

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@log_level"/>

??????? <dbType value="String"/>

??????? <size value="50"/>

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%level"/>

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@logger"/>

??????? <dbType value="String"/>

??????? <size value="255"/>

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%logger"/>

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@message"/>

??????? <dbType value="String"/>

??????? <size value="4000"/>

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%message"/>

??????? </layout>

????? </parameter>

</appender>

写到access配置：

????? <bufferSize value="1" />

????? <connectionString value="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D://工作目录//代码//Demo//LogDemo//db//access.mdb;User Id=;Password=;" />

????? <commandText value="INSERT INTO Log ([Date],@message)" />

????? <parameter>

??????? <parameterName value="@log_date" />

??????? <dbType value="String" />

??????? <size value="255" />

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%date" />

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@thread" />

??????? <dbType value="String" />

??????? <size value="255" />

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%thread" />

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@log_level" />

??????? <dbType value="String" />

??????? <size value="50" />

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%level" />

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@logger" />

??????? <dbType value="String" />

??????? <size value="255" />

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%logger" />

??????? </layout>

????? </parameter>

????? <parameter>

??????? <parameterName value="@message" />

??????? <dbType value="String" />

??????? <size value="1024" />

??????? <layout type="log4net.Layout.PatternLayout">

????????? <conversionPattern value="%message" />

??????? </layout>

????? </parameter>

??? </appender>

??? <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">

????? <mapping>

??????? <level value="ALL" />

??????? <foreColor value="White" />

??????? <backColor value="Red,HighIntensity" />

????? </mapping>

????? <layout type="log4net.Layout.PatternLayout">

??????? <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

????? </layout>

??? </appender>

???

??? <appender name="FileAppender" type="log4net.Appender.FileAppender">

?????

????? <file value="log/log-file.txt" />

?????

????? <appendToFile value="true" />

????? <layout type="log4net.Layout.PatternLayout">

??????? <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

????? </layout>

??? </appender>

??? <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender">

????? <ApplicationName value="msg"></ApplicationName>

????? <LogName value="测试"></LogName>

????? <MachineName value="zhangqi"></MachineName>

????? <layout type="log4net.Layout.PatternLayout">

??????? <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>

????? </layout>

??? </appender>

??? <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

?????

?????

????? <file value="log/log" />

?????

????? <appendToFile value="true"/>

????? <DatePattern value="yyyyMMdd ".txt""></DatePattern>

?????

????? <maxSizeRollBackups value="1000"/>

?????

????? <maximumFileSize value="20"/>

?????

????? <param name="StaticLogFileName" value="false" />

?????

?????

????? <param name="RollingStyle" value="Composite" />

?????

????? <layout type="log4net.Layout.PatternLayout">

??????? <param name="ConversionPattern" value="%d [%r] [%t] %-5p %c? - %m%n%n" />

????? </layout>

??? </appender>

??? <appender name="FileAppender" type="log4net.Appender.FileAppender">

?????

????? <file value="log/log-file.txt" />

?????

????? <appendToFile value="true" />

????? <layout type="log4net.Layout.PatternLayout">

??????? <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

????? </layout>

??? </appender>

<root>

????? <level value="ALL"/>

????? <appender-ref ref="ADONetAppender_SqlServer"/>

????? <appender-ref ref="RollingLogFileAppender"/>

????? <appender-ref ref="EventLogAppender"></appender-ref>

????? <appender-ref ref="AdoNetAppender_Access"></appender-ref>

????? <appender-ref ref="ColoredConsoleAppender"></appender-ref>

????? <appender-ref ref="FileAppender"></appender-ref>

??? </root>

????? --><!--

????? <level value="All"/>

????? <appender-ref ref="ADONetAppender_SqlServer"/>

????? <appender-ref ref="RollingLogFileAppender"/>

??? </logger>

??? <logger name="LoggingExample">

????? --><!--

????? <level value="All"/>

????? <appender-ref ref="ADONetAppender_SqlServer"/>

????? <appender-ref ref="FileAppender"></appender-ref>

??? </logger>

本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/hk8846/archive/2008/11/18/3325477.aspx

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