1 下载log4net.dll
2 在web.config 中的 <configSections>节点内增加如下代码
<!--log4net_s-->
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
<!--log4net_e-->
3 新增Config文件夹并增加log4net.config文件 具体配置可以自定义 示例内容如下：
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
</configSections>
<log4net debug="false">
<!--错误日志配置-->
<appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\\MyWebLog\\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%d-------------------%n%m%n" />
</layout>
</appender>
<!--信息日志配置-->
<appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\\MyWebLog\\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="%n%d-------------------%n%m%n" />
</layout>
</appender>
<!--Debug日志配置-->
<appender name="DebugAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\\MyWebLog\\LogDebug\\" />
<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="%d,%m%n" />
</layout>
</appender>
<!--严重错误日志配置-->
<appender name="FataAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\\MyWebLog\\LogFata\\" />
<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="%d,%m%n" />
</layout>
</appender>
<!--警告日志配置-->
<appender name="WarnAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\\MyWebLog\\LogWarn\\" />
<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="%d,%m%n" />
</layout>
</appender>
<!--log4net.LogManager.GetLogger("logerror")用这个来选择这种类型-->
<logger name="logerror">
<level value="ERROR" />
<appender-ref ref="ErrorAppender" />
</logger>
<logger name="loginfo">
<level value="INFO" />
<appender-ref ref="InfoAppender" />
</logger>
<logger name="logdebug">
<level value="DEBUG" />
<appender-ref ref="DebugAppender" />
</logger>
<logger name="logwarn">
<level value="WARN" />
<appender-ref ref="WarnAppender" />
</logger>
<logger name="logfata">
<level value="FATA" />
<appender-ref ref="FataAppender" />
</logger>
</log4net>
</configuration>
4 添加一个Log4NetHelper类库文件 内容如下：
public static class Log4NetHelper
{
private static string _debugAppender = "logdebug";
private static string _errorAppender = "logerror";
private static string _fatalAppender = "logfata";
private static string _infoAppender = "loginfo";
private static string _warnAppender = "logwarn";
#region 属性设置
/// <summary>
/// 设置DebugAppender的值，默认为：logdebug
/// </summary>
public static string DebugAppender
{
set { _debugAppender = value; }
}
/// <summary>
/// 设置ErrorAppender的值，默认为：logerror
/// </summary>
public static string ErrorAppender
{
set { _errorAppender = value; }
}
/// <summary>
/// 设置FatalAppender的值，默认为：logfata
/// </summary>
public static string FatalAppender
{
set { _fatalAppender = value; }
}
/// <summary>
/// 设置InfoAppender的值，默认为：loginfo
/// </summary>
public static string InfoAppender
{
set { _infoAppender = value; }
}
/// <summary>
/// 设置WarnAppender的值，默认为：logwarn
/// </summary>
public static string WarnAppender
{
set { _warnAppender = value; }
}
#endregion
/// <summary>
/// 加载log4net的日志配置文件
/// </summary>
/// <param name="configFilePath">日志配置文件的完整路径</param>
public static void LoadConfig(string configFilePath)
{
if (string.IsNullOrEmpty(configFilePath) || !File.Exists(configFilePath))
{
throw new ArgumentNullException("日志配置文件不存在");
}
XmlConfigurator.ConfigureAndWatch(new FileInfo(configFilePath));
}
/// <summary>
/// 根据指定的日志适配器名称获取日志对象
/// </summary>
/// <param name="appenderName">日志适配器名称</param>
/// <returns>日志对象</returns>
private static ILog GetLogByName(string appenderName)
{
if (string.IsNullOrEmpty(appenderName))
{
throw new ArgumentNullException("日志配置名称不能为空");
}
return LogManager.GetLogger(appenderName);
}
/// <summary>
/// 记录调试日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
public static void Debug(string message)
{
ILog logByName = GetLogByName(_debugAppender);
if (logByName.IsDebugEnabled)
{
logByName.Debug(message);
}
}
/// <summary>
/// 记录调试日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
/// <param name="exception">为日志附加异常信息，可以在配置中获取更准确的信息，如无异常信息，则可以为null</param>
public static void Debug(string message, Exception exception)
{
ILog logByName = GetLogByName(_debugAppender);
if (logByName.IsDebugEnabled)
{
logByName.Debug(message, exception);
}
}
/// <summary>
/// 记录错误日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
public static void Error(string message)
{
ILog logByName = GetLogByName(_errorAppender);
if (logByName.IsErrorEnabled)
{
logByName.Error(message);
}
}
/// <summary>
/// 记录错误日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
/// <param name="exception">为日志附加异常信息，可以在配置中获取更准确的信息，如无异常信息，则可以为null</param>
public static void Error(string message, Exception exception)
{
ILog logByName = GetLogByName(_errorAppender);
if (logByName.IsErrorEnabled)
{
logByName.Error(message, exception);
}
}
/// <summary>
/// 记录严重错误日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
public static void Fatal(string message)
{
ILog logByName = GetLogByName(_fatalAppender);
if (logByName.IsFatalEnabled)
{
logByName.Fatal(message);
}
}
/// <summary>
/// 记录严重错误日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
/// <param name="exception">为日志附加异常信息，可以在配置中获取更准确的信息，如无异常信息，则可以为null</param>
public static void Fatal(string message, Exception exception)
{
ILog logByName = GetLogByName(_fatalAppender);
if (logByName.IsFatalEnabled)
{
logByName.Fatal(message, exception);
}
}
/// <summary>
/// 记录信息日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
public static void Info(string message)
{
ILog logByName = GetLogByName(_infoAppender);
if (logByName.IsInfoEnabled)
{
logByName.Info(message);
}
}
/// <summary>
/// 记录信息日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
/// <param name="exception">为日志附加异常信息，可以在配置中获取更准确的信息，如无异常信息，则可以为null</param>
public static void Info(string message, Exception exception)
{
ILog logByName = GetLogByName(_infoAppender);
if (logByName.IsInfoEnabled)
{
logByName.Info(message, exception);
}
}
/// <summary>
/// 记录警告日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
public static void Warn(string message)
{
ILog logByName = GetLogByName(_warnAppender);
if (logByName.IsWarnEnabled)
{
logByName.Warn(message);
}
}
/// <summary>
/// 记录警告日志
/// </summary>
/// <param name="message">日志信息，如果因异常记录日志，则message可以为null</param>
/// <param name="exception">为日志附加异常信息，可以在配置中获取更准确的信息，如无异常信息，则可以为null</param>
public static void Warn(string message, Exception exception)
{
ILog logByName = GetLogByName(_warnAppender);
if (logByName.IsWarnEnabled)
{
logByName.Warn(message, exception);
}
}
}
5 在global.asax.cs 的Application_Start方法增加如下代码
//读取log4net的配置文件
Log4NetHelper.LoadConfig(AppDomain.CurrentDomain.BaseDirectory + "Config\\Log4net.config");
6 控制器action方法调用示例
Log4NetHelper.Error("abc");
Log4NetHelper.Info("abc");
Log4NetHelper.Fatal("abc");
Log4NetHelper.Debug("abc");
Log4NetHelper.Warn("abc");