log4Net一些记忆性总结
http://logging.apache.org/log4net/
配置如下：
在 <configSections>节点配置如下：
<configSections>
<section name ="log4net" type="System.Configuration.IgnoreSectionHandler"/>
</configSections>
另外，还要在顶级节点<configuration>下增加<log4net>子节点；在<log4net>节点下增加<appender>子节点，每个子节点代表一种记录日志的方式。
View Code
1 < log4net >
2 < appender name = " LogFileAppender " type = " log4net.Appender.FileAppender " >
3 < file value = " D:log4netfile.txt " />
4 < appendToFile value = " true " />
5 < rollingStyle value = " Date " />
6 < datePattern value = " yyyyMMdd-HH:mm:ss " />
7 < layout type = " log4net.Layout.PatternLayout " >
8 < footer value = " by Lee yi " />
9 < conversionPattern value = " 记录时间：%date 线程ID:[%thread] 日志级别：%-5level 出错类：%logger property:[%property{NDC}] - 错误描述：%message%newline耗费时间%run time当前日志名称%class " />
10 </ layout >
11 </ appender >
12 < appender name = " ConsoleAppender " type = " log4net.Appender.ConsoleAppender " >
13 < layout type = " log4net.Layout.PatternLayout " >
14 < conversionPattern value = " %date [%thread] %-5level %logger [%property{NDC}] - %message%newline " />
15 </ layout >
16 </ appender >
17 < appender name = " EventLogAppender " type = " log4net.Appender.EventLogAppender " >
18 < layout type = " log4net.Layout.PatternLayout " >
19 < conversionPattern value = " %date[%thread]%-5level%logger[%property{NDC}]-%message%newline " />
20 </ layout >
21 </ appender >
22 < appender name = " AdoNetAppender_Access " type = " log4net.Appender.AdoNetAppender " >
23 < connectionString value = " Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c:log4net.mdb " />
24 < commandText value = " Insert into LogDetails([LogDate],[Thread],[Level],[Logger],[Message]) values(@logDate,@thread,@logLevel,@logger,@message) " />
25 < parameter >
26 < parameterName value = " @logDate " />
27 < dbType value = " String " />
28 < size value = " 240 " />
29 < layout type = " log4net.Layout.PatternLayout " >
30 < conversionPattern value = " %date " />
31 </ layout >
32 </ parameter >
33 < parameter >
34 < parameterName value = " @thread " />
35 < dbType value = " String " />
36 < size value = " 240 " />
37 < layout type = " log4net.Layout.PatternLayout " >
38 < conversionPattern value = " %thread " />
39 </ layout >
40 </ parameter >
41 < parameter >
42 < parameterName value = " @logLevel " />
43 < dbType value = " String " />
44 < size value = " 240 " />
45 < layout type = " log4net.Layout.PatternLayout " >
46 < conversionPattern value = " %level " />
47 </ layout >
48 </ parameter >
49 < parameter >
50 < parameterName value = " @logger " />
51 < dbType value = " String " />
52 < size value = " 240 " />
53 < layout type = " log4net.Layout.PatternLayout " >
54 < conversionPattern value = " %logger " />
55 </ layout >
56 </ parameter >
57 < parameter >
58 < parameterName value = " @message " />
59 < dbType value = " String " />
60 < size value = " 240 " />
61 < layout type = " log4net.Layout.PatternLayout " >
62 < conversionPattern value = " %message " />
63 </ layout >
64 </ parameter >
65 </ appender >
66 < root >
67 < level value = " WARN " />
68 < appender - ref ref = " LogFileAppender " />
69 < appender - ref ref = " ConsoleAppender " />
70 < appender - ref ref = " EventLogAppender " />
71 </ root >
72 < logger name = " testApp.Logging " >
73 < level value = " DEBUG " />
74 </ logger >
75 </ log4net >
Appender节点的name属性值有如下一下，仅列出经常用的属性值：
AdoNetAppender：利用ADO.NET记录到数据库的日志；
ConsoleAppender：将日志输出到控制台；
EventLogAppender:将日志写到Windows Event Log；
使用log4net中可能会使用到一些参数：
%m(message):输出的日志消息；
%n(new line)：换行;
%d(datetime):输出到当前语句运行的时刻；
%r(run time)：输出程序从运行到执行到当前语句时消耗的毫秒数；
%t(thread id)：当前语句所在线程id
%p(priority)：日志的当前优先级，即DEBUG，INFO,WARN..等等;
%c(class):当前日志对象的名称；
%of(file)：输出语句所在文件名;
%l(line):输出语句所在的行号.
%数字：表示该项的最小长度，如果不够，则用空格填充，如"%-5level"表示level的最小宽度是5个字符，如果实际长度不够5个字符则以空格填充。
把数据存储到Access数据库中，代码如下：
View Code
1 static void Main( string [] args)
2 {
3 ILog log = log4net.LogManager.GetLogger( " AdoNetAppender_Access " );
4 log.Error( " error " , new Exception( " 发生了一个异常 " ));
5 log.Fatal( " fatal " , new Exception( " 发生了一个致命错误 " ));
6 log.Info( " info " );
7 log.Debug( " debug " );
8 log.Warn( " warn " );
9 Console.WriteLine( " 日志记录完毕。 " );
10 }
root修改如下：
<root>
<level value="WARN"/>
<appender-ref ref="AdoNetAppender_Access"/>//日志保存在Access数据库中
<!--<appender-ref ref="LogFileAppender"/>//保存在文件中
<appender-ref ref="ConsoleAppender"/> //输出到控制台中
<appender-ref ref="EventLogAppender"/>-->
</root>