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Log4net generates an invalid log file name

I want to create log file names with the following pattern:

SBRF_20120820.log
SBRF_20120821.log
SBRF_20120822.log
SBRF_20120823.log

In other words, create a new file for each day. Therefore, I create the following configuration for this:

<log4net>
    <appender name="FileAppender" type="log4net.Appender.RollingFileAppender, log4net">
        <file type="log4net.Util.PatternString" value="Logs/SBRF_%date{yyyyMMdd}.log" />
        <appendToFile value="true" />
        <rollingStyle value="Date" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %-5level - %message%newline" />
        </layout>
    </appender>
    <logger name="LogEmArquivo">
        <level value="INFO" />
        <appender-ref ref="FileAppender" />
    </logger>
</log4net>

When I run the program, today, for example, a file will be created SBRF_20120823.log. But in the following days, the log is written to a file SBRF_20120823.log, and the created files:

SBRF_20120823.log.2012-08-23
SBRF_20120823.log.2012-08-24
SBRF_20120823.log.2012-08-25
SBRF_20120823.log.2012-08-26

And if I run the program tomorrow, the files to be created are:

SBRF_20120824.log.2012-08-24
SBRF_20120824.log.2012-08-25
SBRF_20120824.log.2012-08-26
SBRF_20120824.log.2012-08-27

Why?

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3 answers

You do not put the date template in the <file> file - this is the static part of the file name. You need to put it in the <datePattern>.

, log4net 1.2.11, <preserveLogFileNameExtension> datePattern .

, , , :

<log4net>
  <appender name="FileAppender" type="log4net.Appender.RollingFileAppender, log4net">
      <file type="log4net.Util.PatternString" value="Logs/SBRF_.log"/>
      <appendToFile value="true" />
      <rollingStyle value="Date" />
      <datePattern value="yyyyMMdd" />
      <preserveLogFileNameExtension value="true"/>
      <staticLogFileName value="false" />
      <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date %-5level - %message%newline" />
      </layout>
  </appender>
  <logger name="LogEmArquivo">
      <level value="INFO" />
      <appender-ref ref="FileAppender" />
  </logger>

+7

<rollingStyle value="Date" />.

0

Do not think that you have changed this behavior using RollingFileAppender, so you will need to create your own appender.

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