spring data jpa

http://www.cnblogs.com/chenying99/p/3143516.html

入门
http://sishuok.com/forum/posts/list/7000.html

文档
http://docs.spring.io/spring-data/data-jpa/docs/current/reference/html/

详解JPA 2.0动态查询机制:Criteria API
http://developer.51cto.com/art/200911/162722_1.htm