從JAVA換到Dot Net,有些東西覺得很好用
就像Log4j,只是後來才知道它也有出 dot net的,名字就叫做 log4net
還真是滿好辨認的
要用之前當然也要先下載才行,來這裡(http://logging.apache.org/log4net/download.html)
它是免費的,下載的時候,要看一下,是有分 .net framework 1.1 跟 .net framework 2.0 的版本喔!!
下載解開之後在 log4net-1.2.10\bin\net\2.0\release 下應該有兩個檔案,log4net.dll and
log4net.xml
log4net.dll 是要加入參考用的
log4net.xml 是關於log4net 的一些設定值的一些sample
Keep Learning…………….
log4net的結構,
1、主要分成四個組件,分別是Logger,Repository,Appender及Layout
2、Log4net可以將產出的log分別指定到多個target。ex: File(這個應該是最常用的)、Database、Console…..
Loggers may be assigned levels. Levels are instances of the
log4net.Core.Level class. The following levels are
defined in order of increasing priority:
- ALL
- DEBUG
- INFO
- WARN
- ERROR
- FATAL
- OFF
其中ALL表示允許所有的日誌請求,OFF是拒絕所有的請求
using System;
using log4net; //註1
using log4net.Config;
namespace Log4Net
{
public class Bar
{
private static readonly ILog log = LogManager.GetLogger(typeof(Bar));
public void DoIt()
{
log.Fatal("Fatal");
}
}
class Program
{
//註2
private static readonly ILog log = LogManager.GetLogger(typeof(Program));
static void Main(string[] args)
{
//註3
XmlConfigurator.Configure(new System.IO.FileInfo("d:/config.xml"));
log.Info("Entering application."); //註4
Bar bar = new Bar();
bar.DoIt();
log.Info("Exiting application.");
Console.ReadLine();
}
}
}
根據log4net.xml的設定
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<log4net>
<!-- Define some output appenders -->
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logs\certTool.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="1000KB" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd-HHmm" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<header value="--[Header]-- \r\n" />
<footer value="--[Footer]-- " />
<conversionPattern value="%date [%thread] %-5level %logger [%ndc] <%property{auth}> - %message%newline" />
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<!-- 輸出訊息等級 -->
<level value="DEBUG" />
<appender-ref ref="RollingLogFileAppender" />
<appender-ref ref="ConsoleAppender" />
</root>
</log4net>
</configuration>
寫完了,我這樣是不是很偷懶….^__________^
參考、延伸閱讀:
Log4Net(Logging for DotNet)學習筆記
史帝芬心得筆記 – log4net