(Open source general query structure based on hibernate: 1. Support comprehensive hql syntax 2. Can support xml data structure for Ajax, and can also support tags such as jsp, jstl, struts, etc., based on data parser with different configuration, get different structure data. 3. Integrate a complete paging function. 4. The query items and list items of the query page are dynamic, and are managed uniformly through xml configuration. 5. Safe and stable, anti-Sql injection attack, session disconnection and other issues. 6. Fast development and easy maintenance)