一、簡言
log4net是一個記錄日誌的一個第三方的DLL,功能強大,豐富,對寫日誌進行了優化,要比一般的記錄日誌花費時間短。
二、使用
引入,可以從 log4net官網下載,然後編譯。得到log4net.dll。也可以在NUGET中搜索,加入。
使用步驟。
1.添加引用並配置。實例配置文件App.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<log4net>
<logger name="logerror">
<level value="ERROR" />
<appender-ref ref="ErrorAppender" />
</logger>
<logger name="loginfo">
<level value="INFO" />
<appender-ref ref="InfoAppender" />
</logger>
<appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="Log\\LogError\\" />
<param name="AppendToFile" value="true" />
<param name="MaxSizeRollBackups" value="100" />
<param name="MaxFileSize" value="10240" />
<param name="StaticLogFileName" value="false" />
<param name="DatePattern" value="yyyyMMdd".txt"" />
<param name="RollingStyle" value="Date" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%n異常時間:%d %n異常級別:%-5p%n異常內容:%m%n" />
</layout>
<!--< > = <> %n = 回車-->
</appender>
<appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="Log\\LogInfo\\" />
<param name="AppendToFile" value="true" />
<param name="MaxFileSize" value="10240" />
<param name="MaxSizeRollBackups" value="100" />
<param name="StaticLogFileName" value="false" />
<param name="DatePattern" value="yyyyMMdd".txt"" />
<param name="RollingStyle" value="Date" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="日誌時間:%d %n日誌級別:%-5p %n日誌內容:%m%n%n" />
</layout>
</appender>
</log4net>
</configuration>
2.編寫引用log4net的api的類
3.使用
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace log4netTest
{
public class LogHelper
{
private LogHelper()
{
}
public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");
public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");
public static void SetConfig()
{
log4net.Config.XmlConfigurator.Configure();
}
public static void SetConfig(FileInfo configFile)
{
log4net.Config.XmlConfigurator.Configure(configFile);
}
public static void WriteLog(string info)
{
if (loginfo.IsInfoEnabled)
{
loginfo.Info(info);
}
}
public static void WriteLog(string info, Exception se)
{
if (logerror.IsErrorEnabled)
{
logerror.Error(info, se);
}
}
}
}