首先spring-hibernate.xml里配置事务：

然后，使用的时候要注意，要用注解的方式在Service层配置事务：

@Override    @Transactional(propagation = Propagation.REQUIRED, isolation = Isolation.READ_COMMITTED)    public String Save(String template_code, String block_code, String prop_code, String rule_code, String tpl,            String par_prop, String title) {        // TODO Auto-generated method stu        return teValidationRuleDao.Save(template_code, block_code, prop_code, rule_code, tpl, par_prop, title);    }

最后，要注意如果需要事务回滚，一定要在Dao层抛出RuntimeException这个运行时错误，否则不好使！

@Override    public String Save(String template_code, String block_code, String prop_code, String rule_code, String tpl,            String par_prop, String title) {        // TODO Auto-generated method stub        String json = "{status: 'OK', msg: '保存成功！'}";        Session session = this.getCurrentSession();        try {            TeValidationRule vModel = new TeValidationRule();            List