log4net保存到資料庫系列一：WebConfig中配置log4net

園子裡面有很多關於log4net保存到資料庫的帖子,但是要動手操作還是比較不易，從頭開始學習log4net資料庫日誌

• 一、WebConfig中配置log4net
• 二、獨立配置文件中配置log4net
• 三、代碼中xml配置log4net
• 四、完整代碼配置log4net
• 五、新增資料庫欄位

下麵先一點一點來學習如果進行配置

1.下載安裝

• Nuget安裝：

• Nuget控制台安裝：

Install-Package log4net

• 官方下載最新版本：

http://logging.apache.org/log4net/download_log4net.cgi

2.創建資料庫腳本

1 CREATE TABLE [dbo].[Log] (
2     [Id] [int] IDENTITY (1, 1) NOT NULL,
3     [Date] [datetime] NOT NULL,
4     [Thread] [varchar] (255) NOT NULL,
5     [Level] [varchar] (50) NOT NULL,
6     [Logger] [varchar] (255) NOT NULL,
7     [Message] [varchar] (4000) NOT NULL,
8     [Exception] [varchar] (2000) NULL
9 )

3.配置文件

WebConfig的configSections節點增加

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

<log4net>
    <!--註冊Appender-->
    <root>
      <level value="ALL" />
      <appender-ref ref="AdoNetAppender" />
    </root>
    <!--配置Appender-->
    <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="data source=[伺服器地址];initial catalog=[資料庫];persist security info=True;user id=[賬號];password=[密碼];MultipleActiveResultSets=True;" />
      <commandText value="INSERT INTO Log ([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>
  </log4net>

4.設置監控

AssemblyInfo.cs中增加代碼

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

 5.測試代碼

ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
log.Error("Error是錯誤", new Exception("錯誤"));
log.Fatal("Fatal是嚴重錯誤", new Exception("致命錯誤"));
log.Info("Info是普通消息");
log.Debug("Debug是調試消息");

 6.測試成功