hibernate3 自带的默认的日志框架是slf4j，hibernate3的slf只是一个日志的接口，而hibernate3 自带默认的日志框架，在实际开发中很少有公司或者是项目中用到，这里记录一种使用log4j的日志框架来代替slf4j日志框架的实现，具体配置以及实现如下：
一.加入log4j的日志框架
说明：1. slf4j-api-1.6.1.jar文件，就是前面指的hibernate3自带日志的API(提供了各种日志的接口).
2. log4j-1.2.16.jar文件，就是log4j的框架.
3. slf4j-log4j12-1.6.1.jar文件，就是hibernate3自带的日志接口与log4j中间进行转换的适配器。
log4j.properties 参考配置
### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n ### direct messages to file hibernate.log ###
#log4j.appender.file=org.apache.log4j.FileAppender
#log4j.appender.file.File=hibernate.log
#log4j.appender.file.layout=org.apache.log4j.PatternLayout
#log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n ### set log levels - for more verbose logging change 'info' to 'debug' ### log4j.rootLogger=warn, stdout #log4j.logger.org.hibernate=info
#log4j.logger.org.hibernate=debug ### log HQL query parser activity
#log4j.logger.org.hibernate.hql.ast.AST=debug ### log just the SQL
#log4j.logger.org.hibernate.SQL=debug ### log JDBC bind parameters ###
#log4j.logger.org.hibernate.type=info
#log4j.logger.org.hibernate.type=debug
log4j.logger.org.hibernate.type.descriptor.sql.BasicBinder=TRACE ### log schema export/update ###
log4j.logger.org.hibernate.tool.hbm2ddl=debug ### log HQL parse trees
#log4j.logger.org.hibernate.hql=debug ### log cache activity ###
#log4j.logger.org.hibernate.cache=debug ### log transaction activity
#log4j.logger.org.hibernate.transaction=debug ### log JDBC resource acquisition
#log4j.logger.org.hibernate.jdbc=debug ### enable the following line if you want to track down connection ###
### leakages when using DriverManagerConnectionProvider ###
#log4j.logger.org.hibernate.connection.DriverManagerConnectionProvider=trace