1.引用对应log4net.dll
2.创建对应的log4net.config 文件
示例：
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<log4net>
<!--定义输出到文件中-->
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<!--定义文件存放位置-->
<file value="LogFileAppender_log.txt" />
<appendToFile value="true" />
<datePattern value="yyyyMMdd-HH:mm:ss" />
<layout type="log4net.Layout.PatternLayout">
<!--输出格式-->
<conversionPattern value="记录时间：%date 线程ID:[%thread] 日志级别：文件：%file 所在行:%line %-5level 出错类：%logger - 错误描述：%message%newline" />
</layout>
</appender>
<!--使用Rolling方式记录日志
每个日志文件最大100KB，生成的日志文件名会是log.txt.1,log.txt.2 ...log.txt.10
如果记录的日志超过10个，会从log.txt.1开始覆盖
-->
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="RollingFileAppender_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] (%file:%line) %-5level %logger - %message%newline" />
</layout>
</appender>
<!--定义输出到SQL Server数据库中-->
<!--
在SQL Server中创建表的SQL语句
CREATE TABLE [dbo].[Log] (
[Id] [int] IDENTITY (1, 1) NOT NULL,
[Date] [datetime] NOT NULL,
[Thread] [varchar] (255) NOT NULL,
[Level] [varchar] (50) NOT NULL,
[Logger] [varchar] (255) NOT NULL,
[Message] [varchar] (4000) NOT NULL,
[Exception] [varchar] (2000) NULL
);
-->
<appender name="AdoNetAppender_SQLServer" type="log4net.Appender.AdoNetAppender">
<bufferSize value="100" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data" />
<connectionString value="data source=[sulin\sqlexpress];initial catalog=[linqdemo];integrated security=false;persist security info=True;User ID=[sa];Password=[sql]" />
<commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)" />
<parameter>
<parameterName value="@log_date" />
<dbType value="DateTime" />
<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>
<parameter>
<parameterName value="@exception" />
<dbType value="String" />
<size value="2000" />
<layout type="log4net.Layout.ExceptionLayout" />
</parameter>
</appender>
<root>
<!--文件形式记录日志-->
<appender-ref ref="LogFileAppender" />
<!--MS SQL日志-->
<!--<appender-ref ref="AdoNetAppender_SQLServer" />-->
<!--RollingFileAppender事件日志-->
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
3.关联程序和log4net组件
[assembly:log4net.Config.DOMConfigurator(ConfigFile="filename",
ConfigFileExtension="ext",Watch=true/false)] 项目的AssemblyInfo.cs文件里添加但是我没有尝试
我的做法在global.asax添加对应的关联方式
void Application_Start(object sender, EventArgs e)
{
//在应用程序启动时运行的代码
// log4net.Config.XmlConfigurator.Configure(); 这一行针对在web.config 中添加的log4net 配置
log4net.Config.XmlConfigurator.Configure(new System.IO.FileInfo(Server.MapPath("~/log4net.config")));
}
4怎样使用：
示例： 在相关要用实类前添加这一行代码
log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
log.Info("INFO");
log.Error("ERROR");