log4j的简单配置单
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);