Hello guys,
I am new to log4j so please bear with me. I am writing a program in java
that used to be written in C++. The C++ program used a home-grown
logger. I am trying to use log4j to do the logging. The homegrown logger
used to write 4 logfiles per day; the files were considered as watches
of a 6 hour duration (0000->0600, 0600->1200, 1200->1800 and
1800->2400). It looks to me like I might be able to use
DailyRollingFileAppender to do a similar job.
The trouble is, I do not know what DatePattern to use to get the
rollover happening every six hours starting at midnight. The watches are
absolute times, they are NOT six hours from the start of execution.
Here is my appender:
<appender name="dailyRollFile"
class="org.apache.log4j.DailyRollingFileAppender">
<param name="DatePattern"
value="'.'yyyy-MM-dd-a"/>
<param name="maxLogs" value="100"/>
<param name="File"
value="logs/LogFile-'yyyy-MM-dd-a'.log"/>
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern"
value="%d{ABSOLUTE} [%20.20t] (%30.30c{3}) %-5p - %m%n"/>
</layout>
</appender>
The name of the file that gets created contains a literal 'yyyy-MM-dd-a'
rather than the actual date/time I expected. What am I doing wrong
please?
Finally, the program gives a warning at startup:
log4j:WARN No such property [maxLogs] in
org.apache.log4j.DailingRollingFileAppender.
What does this mean please? How can I make this problem go away?
Regards,
Andrew Marlow
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