Log4Net使用

log4net是一个强大的日志撰写DLL。适用于不同的framework版本。

本文适用于那些不考虑使用原理，直接使用的人。

详细使用可以参考周公的博客：

1、log4net使用方法 http://blog.csdn.net/zhoufoxcn/article/details/2220533
2、log4net使用详情 http://blog.csdn.net/zhoufoxcn/article/details/6029021

使用详情：

一、引用framework版本规定下的DLL
二、配置 配置文件 log4net.config
三、引用配置文件[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]
四、开始使用声明 该变量 ILog logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

使用样例：

配置文件 样例：

配置文件名称：log4net.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<log4net>
<!--
This writes the log information to the console window. It only logs events
that are at least at the INFO level (which would mean that DEBUG events are not
captured.
-->
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date{ABSOLUTE} [%thread] %level %logger - %message%newline%exception"/>

</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="INFO" />
<levelMax value="FATAL" /> 
</filter>
</appender>

<appender name="RollingFileAppenderSize" type="log4net.Appender.RollingFileAppender">
<file value="logs/log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline%exception" />
</layout>
</appender>

<appender name="RollingLogFileAppenderDate" type="log4net.Appender.RollingFileAppender">
<file value="logs/logfile.log" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyy-MM-dd" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline%exception" />
</layout>
</appender>


<!--
This stores information in the mylogfile.txt file. It only captures log events
that contain the key word test or error.

<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="updatesatus.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="5" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />

<filter type="log4net.Filter.StringMatchFilter">
<stringToMatch value="test" />

</filter>
<filter type="log4net.Filter.StringMatchFilter">
<stringToMatch value="error" />

</filter>

<filter type="log4net.Filter.DenyAllFilter" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %level %logger - %message%newline%exception" />

</layout>

</appender>
-->
<root>
<level value="INFO"/>
<appender-ref ref="RollingLogFileAppenderDate"/>
<appender-ref ref="ConsoleAppender" /> 
</root> 
</log4net>
</configuration>