Log4j:warn No appenders could be found for logger error

You cannot insert data after using Hibernate to connect to the database and report the error.

Write my solution directly:
Under src , create a new file named log4j.properties content as follows:

# Configure logging for testing:optionally with log file
Log4j.rootlogger=warn, stdout
# Log4j.rootlogger=warn, stdout, logfile

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.fileappender
Log4j.appender.logfile.file=target/spring.log
Log4j.appender.logfile.layout=org.apache.log4j.patternlayout
log4j.appender.logfile.layout.conversionpattern=%d%p [%c]-%m%n

After saving, no error.

Log4j:warn No appenders could be found for logger error