通过面向对象的对象-关系映射持久化技术，将一对多以及多对多的数据保存到数据库中并提供查询修改等功能。-Through Object-Oriented Object- Relational Mapping Persistence technology, one-to-many and many-to-many data is saved to the database and to provide features such as que

java项目开发 使用hibernate生成DAO文件-java project development to generate DAO files using hibernate