%%%% Error Creating SessionFactory %%%% Hibernate出错

Question

log4j:WARN No such property [username] in service.DbAppender.
2012-03-16 10:30:28:062[INFO]: bean.UserBean@1b64e6a
2012-03-16 10:30:28:109[INFO]: Hibernate 3.3.2.GA
%%%% Error Creating SessionFactory %%%%
java.lang.NullPointerException
    at service.HibernateSessionFactory.rebuildSessionFactory(HibernateSessionFactory.java:70)
    at service.HibernateSessionFactory.getSession(HibernateSessionFactory.java:54)
    at service.impl.UserBeanServiceImpl.insertUserMessage(UserBeanServiceImpl.java:18)
    at dao.GetObject.excuteSql(GetObject.java:52)
    at service.DbAppender.getLogStatement(DbAppender.java:42)
    at org.apache.log4j.jdbc.JDBCAppender.flushBuffer(JDBCAppender.java:249)
    at org.apache.log4j.jdbc.JDBCAppender.append(JDBCAppender.java:146)
    at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
    at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
    at org.apache.log4j.Category.callAppenders(Category.java:203)
    at org.apache.log4j.Category.forcedLog(Category.java:388)
    at org.apache.log4j.Category.log(Category.java:853)
    at org.slf4j.impl.Log4jLoggerAdapter.info(Log4jLoggerAdapter.java:300)
    at org.hibernate.cfg.Environment.<clinit>(Environment.java:560)
    at org.hibernate.cfg.Configuration.reset(Configuration.java:217)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:197)
    at org.hibernate.cfg.Configuration.<init>(Configuration.java:201)
    at service.HibernateSessionFactory.<clinit>(HibernateSessionFactory.java:25)
    at service.impl.UserBeanServiceImpl.insertUserMessage(UserBeanServiceImpl.java:18)
    at dao.GetObject.excuteSql(GetObject.java:52)
    at service.DbAppender.getLogStatement(DbAppender.java:42)
    at org.apache.log4j.jdbc.JDBCAppender.flushBuffer(JDBCAppender.java:249)
    at org.apache.log4j.jdbc.JDBCAppender.append(JDBCAppender.java:146)
    at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:230)
    at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:65)
    at org.apache.log4j.Category.callAppenders(Category.java:203)
    at org.apache.log4j.Category.forcedLog(Category.java:388)
    at org.apache.log4j.Category.info(Category.java:663)
    at dao.GetObject.getMethod(GetObject.java:25)
    at dao.GetObject.insertUserInfo(GetObject.java:35)
    at test.Test.testUser(Test.java:33)
    at test.Test.main(Test.java:22)

Answer 1

没被执行到是因为类的初始化只会执行一次
可以看看类的初始化顺序就明白了

这里要吗使用两个不同的日志系统，hibernate操作的日志系统不进行数据库的操作

要吗就是在日志系统里使用其他数据库连接的获取等