Log4Net 1.2.0 记录在MSSql数据库 用法

使用一、简单用法。

1、下载Log4net，官网地址：http://logging.apache.org/log4net/

2、在项目中引用Log4Net.Dll

3、在Web.Config中增加下边字体加粗部分的配置。

<configuration>
  <configSections>
    <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
      ……
    </sectionGroup>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
  </configSections>

  <log4net>
    <appender name="AdoNetAppender_SqlServer" type="log4net.Appender.AdoNetAppender">
      <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
      <connectionString value="data source=;initial catalog=YqSystem;integrated security=false;persist security info=True;User ID=sa;Password=123"/>
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message]) VALUES (@log_date, @thread, @log_level, @logger, @message)"/>
      <parameter>
        <parameterName value="@log_date"/>
        <dbType value="DateTime"/>
        <layout type="log4net.Layout.PatternLayout" value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}"/>
      </parameter>
      <parameter>
        <parameterName value="@thread"/>
        <dbType value="String"/>
        <size value="255"/>
        <layout type="log4net.Layout.PatternLayout" value="%thread"/>
      </parameter>
      <parameter>
        <parameterName value="@log_level"/>
        <dbType value="String"/>
        <size value="50"/>
        <layout type="log4net.Layout.PatternLayout" value="%level"/>
      </parameter>
      <parameter>
        <parameterName value="@logger"/>
        <dbType value="String"/>
        <size value="255"/>
        <layout type="log4net.Layout.PatternLayout" value="%logger"/>
      </parameter>
      <parameter>
        <parameterName value="@message"/>
        <dbType value="String"/>
        <size value="4000"/>
        <layout type="log4net.Layout.PatternLayout" value="%message"/>
      </parameter>
    </appender>
    <root>
      <appender-ref ref="AdoNetAppender_SqlServer" />
    </root>
  </log4net>
  <appSettings/>

 4、在Global.asax的Application_Start事件中增加配置。

     protected void Application_Start(object sender, EventArgs e)
        {
        log4net.Config.XmlConfigurator.Configure();          
        }

    也可以在项目AssemblyInfo.cs中添加下边语句来替换：

[assembly: log4net.Config.XmlConfigurator(Watch = true)]

5、使用，请看下边加粗的部分。

        log4net.ILog myLogger = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                throw new Exception("Eric Test Message!");
            }
            catch (Exception ex)
            {
                myLogger.Error("测试", new Exception("在这里发生了一个异常"));
            }
        }

使用二、将Log4Net配置放在独立文件中

 1、2步不变。从第3步变更如下。

3、在项目中添加配置文件log4net.config，配置文件中的内容如下：

<?xml version="1.0" encoding="utf-8"?>

<configuration>
  <configSections>
    <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
  </configSections>
  <log4net>
    <appender name="AdoNetAppender_SqlServer" type="log4net.Appender.AdoNetAppender">
      <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
      <connectionString value="data source=;initial catalog=YqSystem;integrated security=false;persist security info=True;User ID=sa;Password=123"/>
      <commandText value="INSERT INTO Log ([Date],[Thread],[Level],[Logger],[Message]) VALUES (@log_date, @thread, @log_level, @logger, @message)"/>
      <parameter>
        <parameterName value="@log_date"/>
        <dbType value="DateTime"/>
        <layout type="log4net.Layout.PatternLayout" value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}"/>
      </parameter>
      <parameter>
        <parameterName value="@thread"/>
        <dbType value="String"/>
        <size value="255"/>
        <layout type="log4net.Layout.PatternLayout" value="%thread"/>
      </parameter>
      <parameter>
        <parameterName value="@log_level"/>
        <dbType value="String"/>
        <size value="50"/>
        <layout type="log4net.Layout.PatternLayout" value="%level"/>
      </parameter>
      <parameter>
        <parameterName value="@logger"/>
        <dbType value="String"/>
        <size value="255"/>
        <layout type="log4net.Layout.PatternLayout" value="%logger"/>
      </parameter>
      <parameter>
        <parameterName value="@message"/>
        <dbType value="String"/>
        <size value="4000"/>
        <layout type="log4net.Layout.PatternLayout" value="%message"/>
      </parameter>
    </appender>
    <root>
      <appender-ref ref="AdoNetAppender_SqlServer" />
    </root>
  </log4net>

</configuration>

4、在项目AssemblyInfo.cs中添加下边语句

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

5、使用与上边的使用相同。代码如下:

        log4net.ILog myLogger = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                throw new Exception("Eric Test Message!");
            }
            catch (Exception ex)
            {
                myLogger.Error("测试", new Exception("在这里发生了一个异常"));
            }
        }