我用的是log4net.Appender.AdoNetAppender附加目的地。
我的log4net的表是以下领域[Date],[Thread],[Level],[Logger],[Message],[Exception]
我需要另一个字段添加到log4net的表(例如SalesId),但记录一个错误或信息消息时,我的xml我将如何指定和在代码中记录的“SalesId”?
例如log.Info("SomeMessage", SalesId)
这里的log4net的XML
<appender name="SalesDBAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1" />
<connectionType value ="System.Data.SqlClient.SqlConnection" />
<connectionString value="Data Source=..." />
<commandText value="INSERT INTO Log4Net ([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>
1)修改命令文本: INSERT INTO Log4Net ([Date],[Thread],[Level],[Logger],[Message],[Exception],[MyColumn]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception, @CustomColumn)
2)添加自定义列中的参数定义:
<parameter>
<parameterName value="@CustomColumn"/>
<dbType value="String" />
<size value="255" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%property{CustomColumn}" />
</layout>
</parameter>
3)然后使用log4net的的背景下,以值传送到参数之一:
// thread properties...
log4net.LogicalThreadContext.Properties["CustomColumn"] = "Custom value";
log.Info("Message");
// ...or global properties
log4net.GlobalContext.Properties["CustomColumn"] = "Custom value";
三种类型的日志记录方面的log4net的使用。
Log4Net.GlobalContext: - 此背景下跨所有应用程序线程和domains.If两个线程共享设置GlobalContext中相同的属性,一个值将覆盖其他。
Log4Net.ThreadContext: - 这个上下文范围仅限于调用线程。 这里有两个线程可以设置相同的属性不同的值,而不会覆盖对方。
Log4Net.ThreadLogicalContext: - 这方面的行为类似于ThreadContext。 如果你有一个自定义线程池算法的工作或托管的CLR,你可能会发现一些使用这一个。
下面的代码添加到您的Program.cs文件:
static void Main( string[] args )
{
log4net.Config.XmlConfigurator.Configure();
log4net.ThreadContext.Properties[ "myContext" ] = "Logging from Main";
Log.Info( "this is an info message" );
Console.ReadLine();
}
2)添加自定义列中的参数定义:
<log4net>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger (%property{myContext}) [%level]- %message%newline" />
</layout>
</appender>
</log4net>
下面是一些个性化偏好的工作版本。 我添加自定义列,用于存储所产生的异常代码。
1)您的自定义列(exceptionCode这里)添加到log4net的配置:
<commandText value="INSERT INTO Log([Date],[Thread],[Level],[Logger],[Message],[Exception],[ExceptionCode])
VALUES (@log_date, @thread, @log_level, @logger, @message, @exception,@exceptionCode)" />
<parameter>
<parameterName value="@exceptionCode" />
<dbType value="String" />
<size value="11" />
<layout type="Common.Utils.LogHelper.Log4NetExtentedLoggingPatternLayout">
<conversionPattern value="%exceptionCode{Code}" />
</layout>
</parameter>
2)Log4NetExtentedLoggingCustomParameters.cs
namespace Common.Utils.LogHelper
{
public class Log4NetExtentedLoggingCustomParameters
{
public string ExceptionCode { get; set; }
public string Message { get; set; }
public override string ToString()
{
return Message;
}
}
}
3)Log4NetExtentedLoggingPatternConverter.cs
namespace Common.Utils.LogHelper
{
public class Log4NetExtentedLoggingPatternConverter : PatternConverter
{
protected override void Convert(TextWriter writer, object state)
{
if (state == null)
{
writer.Write(SystemInfo.NullText);
return;
}
var loggingEvent = state as LoggingEvent;
var messageObj = loggingEvent.MessageObject as Log4NetExtentedLoggingCustomParameters;
if (messageObj == null)
{
writer.Write(SystemInfo.NullText);
}
else
{
switch (this.Option.ToLower()) //this.Option = "Code"
{
case "code": //config conversionPattern parameter -> %exceptionCode{Code}
writer.Write(messageObj.ExceptionCode);
break;
default:
writer.Write(SystemInfo.NullText);
break;
}
}
}
}
}
4)Log4NetExtentedLoggingPatternLayout.cs
namespace Common.Utils.LogHelper
{
public class Log4NetExtentedLoggingPatternLayout : PatternLayout
{
public Log4NetExtentedLoggingPatternLayout()
{
var customConverter = new log4net.Util.ConverterInfo()
{
Name = "exceptionCode",
Type = typeof(Log4NetExtentedLoggingPatternConverter)
};
AddConverter(customConverter);
}
}
}
5)Logger.cs //使用新列享受你的记录! :)
namespace Common.Utils.LogHelper
{
public class Logger
{
static ILog Logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
public static string LogError(string message, Exception exception = null)
{
var logWithErrCode = GetLogWithErrorCode(message);
Logger.Error(logWithErrCode, exception);
return logWithErrCode.ExceptionCode;
}
private static Log4NetExtentedLoggingCustomParameters GetLogWithErrorCode(string message)
{
var logWithErrCode = new Log4NetExtentedLoggingCustomParameters();
logWithErrCode.ExceptionCode = GenerateErrorCode(); //this method is absent for simplicity. Use your own implementation
logWithErrCode.Message = message;
return logWithErrCode;
}
}
}
引用:
http://blog.stvjam.es/2014/01/logging-custom-objects-and-fields-with