log4net写入日志到sqlserver数据库

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1、添加log4Net配置文件log4net.config

配置文件属性设置为：

配置如下：

<?xml version="1.0" encoding="utf-8"?>
<log4net debug="false">
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="2" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=2.0.0.0, Culture=Neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="Data Source=.\SQLExpress;Initial Catalog=testDb;Integrated Security=true" />
<commandText value="INSERT INTO SysLogs ([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>
<level value="ALL" />
<appender-ref ref="AdoNetAppender" />
</root>
</log4net>

2.在数据库创建SysLogs表

3.webConfig 配置

4.应用程序启动时设置配置项 Global.asax

protected void Application_Start()
{ //应用程序启动时，自动加载配置log4Net
XmlConfigurator.Configure(); }

5.日志写入示例

public static class LogHelp
{
public static void WriteError(Exception ex)
{
ILog log = log4net.LogManager.GetLogger("Log");
log.Error(ex.Message, ex);
}
}