In "Developing the Spring MVC Application (1)", due to the configuration of log4j, it has caused the log4j to work properly. Now the log4j is made as follows:
# For jboss: Avoid to setup log4j outside $ jboss_home / server / default / deploy / log4j.xml!
# For all other servers: Comment Out the log4j listener in web.xml too.
Log4j.rootlogger = info, stdout, logfile
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Log4j.appender.stdout = org.apache.log4j.consoleAppender
Log4j.Appender.stdout.Layout = Org.apache.log4j.patternlayout
Log4j.Appender.stdout.Layout.conversionPattern =% D% p [% C] - <% m>% N
Log4j.Appender.logfile = org.apache.log4j.rollingfileappender
Log4j.Appender.logfile.file = Springapp.log
Log4j.Appender.logfile.maxfilesize = 512KB
# Keep Three Backup Files.
Log4j.Appender.logfile.maxbackupindex = 3
# Pattern to output: Date Priority [category] - Message
Log4j.Appender.logfile.Layout = org.apache.log4j.patternlayout
Log4j.Appender.logfile.Layout.conversionPattern =% D% p [% C] -% M% N
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Remove the Third line of comments, specify the log file name as springapp.log and create this empty file in log4j.properties. The specific meaning of log4j.properties content can be referred to "
Log4J Log Management System Simple User Instructions "
