LOG4J配置

log4j.rootLogger = info,file,stdout

#log4j.logger.java.sql.Connection = DEBUG
#log4j.logger.java.sql.Statement = DEBUG
#log4j.logger.java.sql.PreparedStatement = DEBUG
#log4j.logger.java.sql.ResultSet = DEBUG

log4j.appender.stdout = org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout = org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern = [ % d{yy - MM - dd HH:mm:ss}]  % m % n
# for  file
log4j.appender.file.layout = org.apache.log4j.TTCCLayout
log4j.appender.file = org.apache.log4j.FileAppender
log4j.appender.file.File = .. / webapps / ROOT / LOG / tmg.log

     private  Logger log = Logger.getLogger(ArticleSearcherImpl. class );


    log.error("",e);