Log4Net根据不同的Logger名称，生成日志文件到不同的地方。

1.定义日志记录类

   1:   public class Log4NetLogger : ISystemLogger

   2:      {

   3:          static log4net.ILog securityLogger = log4net.LogManager.GetLogger("SecurityLog");

   4:          static log4net.ILog sysLogger = log4net.LogManager.GetLogger("SystemLog");

   5:   

   6:          public SystemLogLevel LogLevel

   7:          {

   8:              get

   9:              {

  10:                  if (ApplicationManager.SystemInfo.SystemLogLevel.HasValue)

  11:                  {

  12:                      return (SystemLogLevel)ApplicationManager.SystemInfo.SystemLogLevel;

  13:                  }

  14:                  else

  15:                  {

  16:                      return SystemLogLevel.None;

  17:                  }

  18:              }

  19:              set

  20:              {

  21:                  ApplicationManager.UpdateLogLevel(value);

  22:              }

  23:          }

  24:   

  25:          /// <summary>

  26:          /// 输出错误级别日志

  27:          /// </summary>

  28:          /// <param name="message">输出的消息</param>

  29:          public void Error(string message)

  30:          {

  31:              //记录日志

  32:              writeSysLog(SystemLogLevel.Error, message);

  33:          }

  34:   

  35:          /// <summary>

  36:          /// 输出警告级别日志

  37:          /// </summary>

  38:          /// <param name="message">输出的消息</param>

  39:          public void Warning(string message)

  40:          {

  41:              //记录日志

  42:              writeSysLog(SystemLogLevel.Warning, message);

  43:          }

  44:   

  45:          /// <summary>

  46:          /// 输出信息级别日志

  47:          /// </summary>

  48:          /// <param name="message">输出的消息</param>

  49:          public void Info(string message)

  50:          {

  51:              //记录日志

  52:              writeSysLog(SystemLogLevel.Info, message);

  53:          }

  54:   

  55:          /// <summary>

  56:          /// 输出调试级别日志

  57:          /// </summary>

  58:          /// <param name="message">输出的消息</param>

  59:          public void Debug(string message)

  60:          {

  61:              //记录日志

  62:              writeSysLog(SystemLogLevel.Debug, message);

  63:          }

  64:   

  65:          /// <summary>

  66:          /// 记录个资法案日志

  67:          /// </summary>

  68:          public void SecurityLog(string message)

  69:          {

  70:              writeSecurityLog(message);

  71:          }

  72:   

  73:          /// <summary>

  74:          /// 记录系统日志

  75:          /// </summary>

  76:          /// <param name="logLevel">日志级别</param>

  77:          /// <param name="message">输出的消息</param>

  78:          private void writeSysLog(SystemLogLevel logLevel, string message)

  79:          {

  80:              string format = "ClientIP={0},CurrentUser={1},Message={2}";

  81:              ClientInfo clientInfo = WebServerHelper.CurrentClientInfo;

  82:              string fullMsg = string.Format(format, clientInfo.UserHostAddress, WebServerHelper.CurrentUserID, message);

  83:              if (LogLevel >= logLevel)

  84:              {

  85:                  switch (logLevel)

  86:                  {

  87:                      case SystemLogLevel.Debug:

  88:                          sysLogger.Debug(fullMsg);

  89:                          break;

  90:                      case SystemLogLevel.Error:

  91:                          sysLogger.Error(fullMsg);

  92:                          break;

  93:                      case SystemLogLevel.Info:

  94:                          sysLogger.Info(fullMsg);

  95:                          break;

  96:                      case SystemLogLevel.Warning:

  97:                          sysLogger.Warn(fullMsg);

  98:                          break;

  99:                  }

 100:              }

 101:          }

 102:          /// <summary>

 103:          /// 记录个资法案日志

 104:          /// </summary>

 105:          /// <param name="message"></param>

 106:          private void writeSecurityLog(string message)

 107:          {

 108:              string format = "ClientIP={0},CurrentUser={1},System={2},Message={3}";

 109:              ClientInfo clientInfo = WebServerHelper.CurrentClientInfo;

 110:              string fullMsg = string.Format(format, clientInfo.UserHostAddress, WebServerHelper.CurrentUserID,ApplicationManager.SystemCode, message);

 111:              securityLogger.Info(fullMsg);

 112:          }

 113:      }

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.csharpcode .lnum { color: #606060; }2.设置配制文件：

   1:  <configSections>        

   2:          <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>

   3:  </configSections>

   4:  <log4net>

   5:          <appender name="SystemLogAppender" type="log4net.Appender.RollingFileAppender">

   6:              <file value="OA_Log/App_Log/" />

   7:              <appendToFile value="true" />

   8:              <rollingStyle value="Date" />

   9:              <staticLogFileName value="false" />

  10:              <datePattern value="yyyyMMdd&quot;.log&quot;" />

  11:              <layout type="log4net.Layout.PatternLayout">

  12:                  <!--输出格式-->

  13:                  <conversionPattern value="%date %-5level %message%newline" />

  14:              </layout>

  15:              <filter type="log4net.Filter.LoggerMatchFilter">

  16:                  <loggerToMatch value="SystemLog" />               

  17:              </filter>

  18:              <filter type="log4net.Filter.DenyAllFilter" />

  19:          </appender>

  20:          <appender name="SecurityLogAppender" type="log4net.Appender.RollingFileAppender">

  21:              <file value="OA_Log/Access_Log/" />

  22:              <appendToFile value="true" />

  23:              <rollingStyle value="Date" />

  24:              <staticLogFileName value="false" />

  25:              <datePattern value="yyyyMMdd&quot;.log&quot;" />

  26:              <layout type="log4net.Layout.PatternLayout">

  27:                  <!--输出格式-->

  28:                  <conversionPattern value="%date %-5level %message%newline" />

  29:              </layout>

  30:              <filter type="log4net.Filter.LoggerMatchFilter">

  31:                  <loggerToMatch value="SecurityLog" />               

  32:              </filter>

  33:              <filter type="log4net.Filter.DenyAllFilter" />

  34:          </appender>        

  35:          <root>

  36:              <level value="ALL"/>            

  37:              <appender-ref ref="SystemLogAppender"/>

  38:              <appender-ref ref="SecurityLogAppender"/>            

  39:          </root>       

  40:  </log4net>

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3.在Global.asax的Application_Start事件中加入初始化代码：

   1:   protected void Application_Start(object sender, EventArgs e)

   2:   {

   3:              log4net.Config.XmlConfigurator.Configure();         

   4:   }

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