blocks|key|242390|text|下面是一个示例app.config部分，路径是通过<file+value="somepath"/>标记定义的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|242391|This+link是一个很好的文档资源|242392|<log4net>
++<appender+name="RollingFileAppender"+type="log4net.Appender.RollingFileAppender">
+++<file+value="C:\\SOMEPATH\\SOMELOG.log"/>
+++<appendToFile+value="true"/>
+++<rollingStyle+value="Size"/>
+++<maxSizeRollBackups+value="10"/>
+++<maximumFileSize+value="10MB"/>
+++<layout+type="log4net.Layout.PatternLayout">
+++++<conversionPattern+value="%25date+[%25thread]+%25-5level+%25logger+–+%25message%25exception%25newline"/>
+++</layout>++++
+</appender>
+<root>
+++<level+value="ALL"/>
+++<appender-ref+ref="RollingFileAppender"/>
+</root>++++++
</log4net>|code-block|syntax|javascript|242393|entityMap|0|LINK|mutability|MUTABLE|url|http://logging.apache.org/log4net/release/manual/configuration.html^0|7|A|P|O|0|0|9|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@]|D|@$9|10|A|11|1|12]]|E|$]]|$1|H|3|I|5|J|7|13|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

Below is a sample <code>app.config</code> section, with the Path being defined through the <code>&lt;file value="somepath"/&gt;</code> tag.

<a href="http://logging.apache.org/log4net/release/manual/configuration.html" rel="nofollow">This link</a> is a good resource for documentation

<pre class="lang-xml prettyprint-override"><code>&lt;log4net&gt;
 &lt;appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender"&gt;
 &lt;file value="C:\\SOMEPATH\\SOMELOG.log"/&gt;
 &lt;appendToFile value="true"/&gt;
 &lt;rollingStyle value="Size"/&gt;
 &lt;maxSizeRollBackups value="10"/&gt;
 &lt;maximumFileSize value="10MB"/&gt;
 &lt;layout type="log4net.Layout.PatternLayout"&gt;
 &lt;conversionPattern value="%date [%thread] %-5level %logger – %message%exception%newline"/&gt;
 &lt;/layout&gt; 
 &lt;/appender&gt;
 &lt;root&gt;
 &lt;level value="ALL"/&gt;
 &lt;appender-ref ref="RollingFileAppender"/&gt;
 &lt;/root&gt; 
&lt;/log4net&gt;
</code></pre>

blocks|key|245099|text|纪录片很简单：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|245100|245101|日志文件：日志文件的完整路径或相对路径。|blockquote|245102|245103|245104|因此，您需要的是完整路径，如C:\physicalpath\LOG\Log.log或相对路径，这需要从.+char+.开始，如.\App_Data\Log4Net.Logs|offset|length|style|CODE|BOLD|245105|还可以在file属性中使用文件夹名，然后必须使用datePattern属性指定文件名，例如：|245106|<appender+name="FileAppender"+type="log4net.Appender.RollingFileAppender">
++<file+value=".\\App_Data\\Log4Net.Logs\\backend"/>
++<datePattern+value=".yyyy-MM-dd'.log'"/>
++<appendToFile+value="true"/>
++<maximumFileSize+value="256KB"/>
++<maxSizeRollBackups+value="2"/>
++<rollingStyle+value="Date"/>
++<staticLogFileName+value="false"/>
++<lockingModel+type="log4net.Appender.FileAppender%2BMinimalLock"/>
++<layout+type="log4net.Layout.PatternLayout">
+++++<conversionPattern+value="%25level+%25thread+%25logger+-+%25message%25newline"/>
++</layout>
</appender>|code-block|syntax|javascript|245107|还记得添加了|245108|<lockingModel+type="log4net.Appender.FileAppender%2BMinimalLock"/>|245109|因此，您可以避免log4net锁定文件，并且不能使用它来追加消息。|245110|如果你不习惯log4net，不要忘了添加<root>节点，这是让log4net知道你想要使用的节点，而不是<appender>节点，例如，你可以有10个<appender>节点，但只使用一个，那么<root>节点就只配置了你想使用的节点……|245111|245112|这是一个带有2个Mongo附加器和1个文件附加器的完整配置，<root>指定只有文件附加器在使用中：|245113|++<log4net>
++++<appender+name="MongoAppender"+type="log4net.Appender.MongoDBAppender,+log4mongo-net">
++++++
++++++<host+value="staff.mongohq.com"/>
++++++<port+value="10077"/>
++++++<databaseName+value="myApp_2011"/>
++++++<collectionName+value="logs_net"/>
++++++<userName+value="myself"/>
++++++<password+value="123456"/>
++++</appender>
++++<appender+name="MongoAppenderAppHarbor"+type="log4net.Appender.MongoDBAppender,+log4mongo-net">
++++++
++++++<host+value="staff.mongohq.com"/>
++++++<port+value="10048"/>
++++++<databaseName+value="d1741d63-46b1-4a44-9c49-8c28cecae36b"/>
++++++<collectionName+value="logs_net"/>
++++++<userName+value="myself"/>
++++++<password+value="123456"/>
++++</appender>
++++<appender+name="FileAppender"+type="log4net.Appender.RollingFileAppender">
++++++
++++++<file+value=".\\App_Data\\Log4Net.Logs\\backend"/>
++++++<datePattern+value=".yyyy-MM-dd'.log'"/>
++++++<appendToFile+value="true"/>
++++++<maximumFileSize+value="256KB"/>
++++++<maxSizeRollBackups+value="2"/>
++++++<rollingStyle+value="Date"/>
++++++<staticLogFileName+value="false"/>
++++++<lockingModel+type="log4net.Appender.FileAppender%2BMinimalLock"/>
++++++<layout+type="log4net.Layout.PatternLayout">
++++++++<conversionPattern+value="%25level+%25thread+%25logger+-+%25message%25newline"/>
++++++</layout>
++++</appender>
++++<root>
++++++
++++++<appender-ref+ref="FileAppender"/>
++++</root>
++</log4net>|245114|entityMap^0|0|0|0|0|0|E|R|1M|1|1R|N|1F|6|0|4|4|O|B|D|4|0|0|0|3|0|0|8|7|0|6|7|K|6|W|7|1H|A|24|A|2Q|6|0|0|P|4|U|6|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1C|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|G|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1F|8|@$J|1G|K|1H|L|M]|$J|1I|K|1J|L|M]|$J|1K|K|1L|L|M]|$J|1M|K|1N|L|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1O|8|@$J|1P|K|1Q|L|M]|$J|1R|K|1S|L|M]|$J|1T|K|1U|L|N]]|9|@]|A|$]]|$1|Q|3|R|5|S|7|1V|8|@]|9|@]|A|$T|U]]|$1|V|3|W|5|6|7|1W|8|@$J|1X|K|1Y|L|N]]|9|@]|A|$]]|$1|X|3|Y|5|S|7|1Z|8|@]|9|@]|A|$T|U]]|$1|Z|3|10|5|6|7|20|8|@$J|21|K|22|L|M]]|9|@]|A|$]]|$1|11|3|12|5|6|7|23|8|@$J|24|K|25|L|M]|$J|26|K|27|L|M]|$J|28|K|29|L|M]|$J|2A|K|2B|L|M]|$J|2C|K|2D|L|M]|$J|2E|K|2F|L|M]]|9|@]|A|$]]|$1|13|3|-4|5|6|7|2G|8|@]|9|@]|A|$]]|$1|14|3|15|5|6|7|2H|8|@$J|2I|K|2J|L|N]|$J|2K|K|2L|L|M]]|9|@]|A|$]]|$1|16|3|17|5|S|7|2M|8|@]|9|@]|A|$T|U]]|$1|18|3|-4|5|6|7|2N|8|@]|9|@]|A|$]]]|19|$]]

The documenation is straight forward:

<blockquote>
 file: the full or relative path to the log file.
</blockquote>

So all you need to have is the full path like <code>C:\physicalpath\LOG\Log.log</code> or the ralative one, this needs to start with the dot char <code>.</code> like <code>.\App_Data\Log4Net.Logs</code>

you can also use the folder name in the <code>file</code> attribute, then you must use the <code>datePattern</code> attribute to specify the file name, for example:

<pre class="lang-xml prettyprint-override"><code>&lt;appender name="FileAppender" type="log4net.Appender.RollingFileAppender"&gt;
 &lt;file value=".\\App_Data\\Log4Net.Logs\\backend"/&gt;
 &lt;datePattern value=".yyyy-MM-dd'.log'"/&gt;
 &lt;appendToFile value="true"/&gt;
 &lt;maximumFileSize value="256KB"/&gt;
 &lt;maxSizeRollBackups value="2"/&gt;
 &lt;rollingStyle value="Date"/&gt;
 &lt;staticLogFileName value="false"/&gt;
 &lt;lockingModel type="log4net.Appender.FileAppender+MinimalLock"/&gt;
 &lt;layout type="log4net.Layout.PatternLayout"&gt;
 &lt;conversionPattern value="%level %thread %logger - %message%newline"/&gt;
 &lt;/layout&gt;
&lt;/appender&gt;
</code></pre>

Also remember to add the 

<pre class="lang-xml prettyprint-override"><code>&lt;lockingModel type="log4net.Appender.FileAppender+MinimalLock"/&gt;
</code></pre>

So you can avoid that <code>log4net</code> lock the file and you can't used it to append your messages.

If you're not used to <code>log4net</code>, don't forget to add the <code>&lt;root&gt;</code> node, this is the the one that let's <code>log4net</code> know what you want to use and not the <code>&lt;appender&gt;</code> nodes, for example, you can have 10 <code>&lt;appender&gt;</code> nodes and use only one, the <code>&lt;root&gt;</code> node is then only configured with the one you want to use... 

<hr>

here is a full configuration with 2 Mongo Appenders and 1 File Appender, the <code>&lt;root&gt;</code> specifies that only the file appender is in use:

<pre class="lang-xml prettyprint-override"><code> &lt;log4net&gt;
 &lt;appender name="MongoAppender" type="log4net.Appender.MongoDBAppender, log4mongo-net"&gt;
 &lt;!-- MongoDB 1 connection options --&gt;
 &lt;host value="staff.mongohq.com"/&gt;
 &lt;port value="10077"/&gt;
 &lt;databaseName value="myApp_2011"/&gt;
 &lt;collectionName value="logs_net"/&gt;
 &lt;userName value="myself"/&gt;
 &lt;password value="123456"/&gt;
 &lt;/appender&gt;
 &lt;appender name="MongoAppenderAppHarbor" type="log4net.Appender.MongoDBAppender, log4mongo-net"&gt;
 &lt;!-- MongoDB 2 connection options --&gt;
 &lt;host value="staff.mongohq.com"/&gt;
 &lt;port value="10048"/&gt;
 &lt;databaseName value="d1741d63-46b1-4a44-9c49-8c28cecae36b"/&gt;
 &lt;collectionName value="logs_net"/&gt;
 &lt;userName value="myself"/&gt;
 &lt;password value="123456"/&gt;
 &lt;/appender&gt;
 &lt;appender name="FileAppender" type="log4net.Appender.RollingFileAppender"&gt;
 &lt;!-- Local file options --&gt;
 &lt;file value=".\\App_Data\\Log4Net.Logs\\backend"/&gt;
 &lt;datePattern value=".yyyy-MM-dd'.log'"/&gt;
 &lt;appendToFile value="true"/&gt;
 &lt;maximumFileSize value="256KB"/&gt;
 &lt;maxSizeRollBackups value="2"/&gt;
 &lt;rollingStyle value="Date"/&gt;
 &lt;staticLogFileName value="false"/&gt;
 &lt;lockingModel type="log4net.Appender.FileAppender+MinimalLock"/&gt;
 &lt;layout type="log4net.Layout.PatternLayout"&gt;
 &lt;conversionPattern value="%level %thread %logger - %message%newline"/&gt;
 &lt;/layout&gt;
 &lt;/appender&gt;
 &lt;root&gt;
 &lt;!--
 &lt;level value="DEBUG" /&gt;
 &lt;appender-ref ref="MongoAppender" /&gt;
 &lt;appender-ref ref="MongoAppenderAppHarbor" /&gt;
 --&gt;
 &lt;appender-ref ref="FileAppender"/&gt;
 &lt;/root&gt;
 &lt;/log4net&gt;
</code></pre>

blocks|key|2913951|text|请记住，也许您应该在Global.asax.cs中添加以下代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2913952|protected+void+Application_Start()
{
++++log4net.Config.XmlConfigurator.Configure();
++++//...more+code
}|code-block|syntax|javascript|2913953|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Remember maybe you should to add in Global.asax.cs the follow code:

<pre><code>protected void Application_Start()
{
 log4net.Config.XmlConfigurator.Configure();
 //...more code
}
</code></pre>

Ok, so I'm understood how to configure the <code>log4Net</code> in my application, But now 

First I want to improve the configuration by differencing the level of the logs if the application it's a release or a debug, how can I do this?. 

Second, If I had a folder in my project called <code>LOG</code> how can I set the configuration, to not used the physical folder of my application??

for example Instead of:

<pre><code>&lt;file value="C:\physicalpath\LOG\Log.log" /&gt; 
</code></pre>

used

<pre><code>&lt;file value="\LOG\Log.log" /&gt; 
</code></pre>

or

<pre><code>&lt;file value="%some_variable%\LOG\Log.log" /&gt; 
</code></pre>

Configure log4net for asp.net MVC3 project

日志文件

MongoDB

好了，我已经了解了如何在我的应用程序中配置log4Net，但是现在First我想通过区分日志级别来改进配置如果应用程序是发行版还是调试版，我该怎么做？Second，如果我的项目中有一个名为LOG的文件夹，我如何将配置设置为不使用应用程序的物理文件夹？？例如，用代替：<file value="C:\physicalpat...

问为asp.net MVC3项目配置log4net
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