大家可能都用过Log4net插件来记录日志，该插件默认提供了这几个字段@log_date,@exception, @thread, @log_level, @logger, @message, 但是这并不能完全满足我们日常记录日志的需求，我们可能需要扩展自己所需的其他字段，来记录到数据库。例如，对于用户操作日志，我们可能需要记录操作人员ID或者姓名，或者操作类型或者操作信息等。
下面简单地介绍一下Log4Net 自定义字段记录到数据库：
第一步，当然是创建对应的数据库日志表，如下图所示：
第二步，配置Web.config,如下所示：
<configuration>
<configSections>
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=4.4.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
</configSections>
<log4net>
<!--Database Output-->
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="server=10.10.120.98\SQLEXPRESS;database=manufacturingDev;User ID=sa;Password=nova123;" />
<commandText value="INSERT INTO OperateLogs ([CreatedTime],[LastUpdatedTime],[Thread],[LogLevel],[Logger],[Message],[OperateType],[Detail],[UserId],[UserName]) VALUES (@log_date,@log_date1, @thread, @log_level, @logger, @message,@operatetype,@detail,@userid,@username)" />
<parameter>
<parameterName value="@log_date"/>
<dbType value="DateTime"/>
<layout type="log4net.Layout.RawTimeStampLayout"/>
</parameter>
<parameter>
<parameterName value="@log_date1"/>
<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="255"/>
<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="@operatetype"/>
<dbType value="Int32"/>
<layout type="CardsPocketsManufacturing.Infrastructure.Log4NET.ActionLayoutPattern">
<conversionPattern value="%actionInfo{operatetype}"/>
</layout>
</parameter>
<parameter>
<parameterName value="@detail"/>
<dbType value="String"/>
<size value="4000"/>
<layout type="CardsPocketsManufacturing.Infrastructure.Log4NET.ActionLayoutPattern">
<conversionPattern value="%actionInfo{detail}"/>
</layout>
</parameter>
<parameter>
<parameterName value="@userid"/>
<dbType value="Int32"/>
<layout type="CardsPocketsManufacturing.Infrastructure.Log4NET.ActionLayoutPattern">
<conversionPattern value="%actionInfo{userid}"/>
</layout>
</parameter>
<parameter>
<parameterName value="@username"/>
<dbType value="String"/>
<size value="4000"/>
<layout type="CardsPocketsManufacturing.Infrastructure.Log4NET.ActionLayoutPattern">
<conversionPattern value="%actionInfo{username}"/>
</layout>
</parameter>
</appender>
<!-- Specify the level for some specific categories -->
<root>
<level value="ALL" name="OperateLogger" />
<appender-ref ref="AdoNetAppender" />
</root>
</log4net>
第三步，创建Custom实体，ActionLoggerInfo，代码如下：
public class ActionLoggerInfo
{
public int UserId { get; set; }
public string UserName { get; set; }
public int OperateType { get; set; }
public string Detail { get; set; }
public ActionLoggerInfo(int operatetpye, int userId, string userName, string detail)
{
this.OperateType = operatetpye;
this.UserId = userId;
this.UserName = userName;
this.Detail = detail;
}
}
第四步，建立Custom转换器ActionConverter，代码如下：
public class ActionConverter : PatternConverter
{
protected override void Convert(System.IO.TextWriter writer, object state)
{
if (state == null)
{
writer.Write(SystemInfo.NullText);
return;
}
var loggingEvent = state as LoggingEvent;
var actionInfo = loggingEvent.MessageObject as ActionLoggerInfo;
if (actionInfo == null)
{
writer.Write(SystemInfo.NullText);
}
else
{
switch (this.Option.ToLower())
{
case "userid":
writer.Write(actionInfo.UserId);
break;
case "username":
writer.Write(actionInfo.UserName);
break;
case "operatetype":
writer.Write(actionInfo.OperateType);
break;
case "detail":
writer.Write(actionInfo.Detail);
break;
default:
writer.Write(SystemInfo.NullText);
break;
}
}
}
}
第五步，创建LayoutPattern，ActionLayoutPattern，代码如下:
public class ActionLayoutPattern : PatternLayout
{
public ActionLayoutPattern()
{
AddConverter(new ConverterInfo
{
Name = "actionInfo",
Type = typeof(ActionConverter)
});
}
}
第六步，创建Log日志帮助类，LogUtil，代码如下：
public class LogUtil {
public LogUtil() { }
private static ActionLoggerInfo _message = null;
private static log4net.ILog _log;
public static log4net.ILog Log
{
get
{
if (_log == null)
{
_log = LogManager.GetLogger("OperateLogger");
}
return _log;
}
}
public static void Debug()
{
if (Log.IsDebugEnabled)
{
Log.Debug(_message);
}
}
public static void Error()
{
if (Log.IsErrorEnabled)
{
Log.Error(_message);
}
}
public static void Fatal()
{
if (Log.IsFatalEnabled)
{
Log.Fatal(_message);
}
}
public static void Info()
{
if (Log.IsInfoEnabled)
{
Log.Info(_message);
}
}
public static void Warn()
{
if (Log.IsWarnEnabled)
{
Log.Warn(_message);
}
}
/// <summary>
/// call Log method
/// </summary>
/// <param name="operateType"></param>
/// <param name="userId"></param>
/// <param name="userName"></param>
/// <param name="detail"></param>
/// <param name="level"></param>
public static void SaveMessage(int operateType, int userId, string userName, string detail, int level)
{
_message = new ActionLoggerInfo(operateType, userId, userName, detail);
switch (level)
{
case 1: Info(); break;
case 2: Warn(); break;
case 3: Error(); break;
case 4: Fatal(); break;
default: break;
}
}
}
到此完毕！！！！
Log4Net 自定义字段记录到数据库
时间： 2024-08-08 02:10:16