我习惯的log4j配置文件

log4j.rootLogger=debug, A1 , R
log4j.appender.A1=org.apache.log4j.ConsoleAppender
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=Time:[%d]Class:[%c]Message:[%m] /n

log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=log.html
log4j.appender.R.MaxFileSize=2048KB
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.HTMLLayout
log4j.appender.R.layout.ConversionPattern=Time:[%d]Class:[%c]Message:[%m]

 代码调用

public class UsersDAO extends MyHibernateDao implements UsersInterface
...{

    private static final Log log = LogFactory.getLog(UsersDAO.class);

    public static final String NAME = "name";

    public static final String PWD = "pwd";

    protected void initDao()
    ...{
    }

    public void save(Users transientInstance)
    ...{
        log.debug("saving Users instance");
        try
        ...{
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        }
        catch (RuntimeException re)
        ...{
            log.error("save failed", re);
            throw re;
        }
    }
}