Log4j log files are saved to the project release directory. log4j files are separated every day and named by date.

Set the directory by yourself, that is, set through system. setproperty at project startup to implement servletcontextlistener:

Public class log4jlistener implements servletcontextlistener {

Public static final string log4jdirkey = "log4jdir ";

Public void contextdestroyed (servletcontextevent ){

System. getproperties (). Remove (log4jdirkey );

}

Public void contextinitialized (servletcontextevent ){

String log4jdir = servletcontextevent. getservletcontext (). getrealpath ("/");

// System. Out. println ("log4jdir:" + log4jdir );

System. setproperty (log4jdirkey, log4jdir );

}

}

Web. xml configuration:

<Listener>

<Listener-class> com. Haier. Framework. util. log4jlistener </listener-class>

</Listener>

Log4j. prtperties Configuration:

# Set root logger level to warn and append to stdout

Log4j. rootlogger = info, console, file

Log4j. appender. Console = org. Apache. log4j. leleappender

Log4j. appender. Console. layout = org. Apache. log4j. patternlayout \ t

# Pattern to output the caller's file name and line number.

# Log4j. appender. Console. layout. conversionpattern = [% P] % l --- % m % N

Log4j. appender. File = org. Apache. log4j. dailyrollingfileappender

# Name the daily log file name by date,

Log4j. appender. file. File =$ {log4jdir}/logs/log. Log

Log4j. appender. file. datepattern = yyyymmdd '. Log'

Log4j. appender. file. layout = org. Apache. log4j. patternlayout

Log4j. appender. file. layout. conversionpattern = [%-5 p] % L-% d {yyyy-mm-dd hh: mm: SS, SSS} method: % L-% m % N

During the test, how can I seek the similar "log. log20140518.log, there is only one log file. log File, the log generated on the 7th day (today) is "log. logs are stored in the form of logs generated on the 7th day by the 8th day (tomorrow. save the log file to log. log201400707.log, and then create an 8-day log. log files, and so on.

Therefore, you must note that you must modify the system time to view the generated logs during the test.