Log4net 使用文档例子

一般我们都会使用数据库和文件作为log的输出介质,下面是我在项目实践中总结到的经验:

1 ．ADONetAppender

（ 1 ）、 MS SQL Server

define the table such as:

CREATE TABLE [dbo].[Log] (

[Id] [int] IDENTITY (1, 1) NOT NULL,

[Date] [datetime] NOT NULL,

[Thread] [varchar] (255) NOT NULL,

[Level] [varchar] (50) NOT NULL,

[Logger] [varchar] (255) NOT NULL,

[Message] [varchar] (4000) NOT NULL,

[Exception] [varchar] (2000) NULL

)

<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">

<bufferSize value="100" />

<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />

<connectionString value="data source=[database server];initial catalog=[database name];integrated security=false;persist security info=True;User ID=[user];Password=[password]" />

<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>

（ 2 ）、 MS Access please reference the SDK of Log4net document

（ 3 ）、 Oracle9i log4net/release/config-examples.html

（ 4 ）、 Oracle8i

（ 5 ）、 DB2

2 、 FileAppender

<appender name="FileAppender" type="log4net.Appender.FileAppender">

<file value="log-file.txt" />

<appendToFile value="true" />

<layout type="log4net.Layout.PatternLayout">

<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

</layout>

</appender>

4． RemotingAppender

传送日志事件到达一个特定的接受器，sink定义了这个接受器的地址，lossy定义了没有丢弃事件，bufferSize 定义了一个black的由95个事件打包发送的，而onlyFixPartialEventData可以忽律一些特定的事件。

<appender name="RemotingAppender" type="log4net.Appender.RemotingAppender" >

<sink value="tcp://localhost:8085/LoggingSink" />

<lossy value="false" />

<bufferSize value="95" />

<onlyFixPartialEventData value="true" />

</appender>

5． RollingFileAppender

由于定义了staticLogFileName 为true，以我的理解就是定位保存的log文件个数为10个(maxSizeRollBackups),同时设定了每个文件的大小为100KB，所以一直都保持有10个文件。RollingStyle设定rolling的触发器。

Eg1:

<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">

<file value="log.txt" />

<appendToFile value="true" />

<rollingStyle value="Size" />

<maxSizeRollBackups value="10" />

<maximumFileSize value="100KB" />

<staticLogFileName value="true" />

<layout type="log4net.Layout.PatternLayout">

<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> </layout>

</appender>

eg2:

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

<file value="logfile" />

<appendToFile value="true" />

<rollingStyle value="Date" />

<datePattern value="yyyyMMdd-HHmm" />

<layout type="log4net.Layout.PatternLayout">

<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

</layout>

</appender>

eg3:

<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">

<file value="logfile" />

<appendToFile value="true" />

<rollingStyle value="Composite" />

<datePattern value="yyyyMMdd" />

<maxSizeRollBackups value="10" />

<maximumFileSize value="1MB" />

<layout type="log4net.Layout.PatternLayout">

<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />

</layout>

</appender>

6． UdpAppender

可以发送到远程地址的特定端口

<appender name="UdpAppender" type="log4net.Appender.UdpAppender">

<localPort value="8080" />

<remoteAddress value="224.0.0.1" />

<remotePort value="8080" />

<layout type="log4net.Layout.PatternLayout, log4net">

<conversionPattern value="%-5level %logger [%property{NDC}] - %message%newline" />

</layout>

</appender>

log4net 的学习暂时告一段落了,希望能够进一步对log4j学习,现在我越来越喜欢.net的东西了,再也不会感觉到很别扭!希望自己可以很快地强大起来!!!