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Log4cplus log library usage

2025-01-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >

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1 windows environment 1.1 create a log template

The currently used version of log4cplus-1.2.1-rc2

Staticbool bFirst = true

Logger_logger = Logger::getInstance (LOG4CPLUS_TEXT ("thriftserver"))

If (bFirst)

{

SharedAppenderPtr_append (new RollingFileAppender (LOG4CPLUS_TEXT ("thriftserver.log"), 300 * 1024, 20))

Auto_ptrpPatternLayout (new PatternLayout ("% D -% m [% l]% n"))

_ append- > setLayout (pPatternLayout)

_ append- > setName (LOG4CPLUS_TEXT ("thriftserver"))

_ logger.addAppender (_ append)

BFirst= false

}

Return _ logger

1.2 Log carries a timestamp

Auto_ptr pPatternLayout (newPatternLayout ("% d -% m [% l] n"))

It shows the time of Greenwich.

Auto_ptr pPatternLayout (newPatternLayout ("% D -% m [% l]% n"))

It shows the local time

Auto_ptr pPatternLayout (new PatternLayout ("% D {% Y-%m-%d% H:%M:%S.%q} -% m [% l]% n"))

It shows the local time and is accurate to milliseconds

1.3 use examples

# include

# include

# include

# define LOGGERTAGLogger::getInstance (LOG4CPLUS_TEXT ("thriftserver"))

Log4cplus::LoggerStartSetupThrfitServerLog ()

/ / create a log file while the program is running, and call this function

Log4cplus::Logger StartSetupThrfitServerLog ()

{

Staticbool bFirst = true

Logger_logger = Logger::getInstance (LOG4CPLUS_TEXT ("thriftserver"))

If (bFirst)

{

SharedAppenderPtr_append (new RollingFileAppender (LOG4CPLUS_TEXT ("thriftserver.log"), 300 * 1024, 20))

Auto_ptrpPatternLayout (new PatternLayout ("% D -% m [% l]% n"))

_ append- > setLayout (pPatternLayout)

_ append- > setName (LOG4CPLUS_TEXT ("thriftserver"))

_ logger.addAppender (_ append)

BFirst= false

}

Return _ logger

}

/ / write a log

LOG4CPLUS_ERROR (LOGGERTAG, "can notconnect remote host,ip:"

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