Database Relationship in JSP like Ruby-on-Rails

In ruby on rails we can specify many Database relations line belongs_to, has开发者_如何学运维_many, and this make coding a lot simpler.

But is there any such database relationship APIs that brings such coding ease to JSP.

I'm pretty new to JSP. But you can relate any code with ROR.

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JSP is a view technology, not a full-stack framework like Rails. The Rails’ equivalent of JSP is probably ERB. In Java EE the Spring Framework lets you declare relationships between beans, but it's a lot more verbose than Rails.

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Not to JSPs. JSPs are equivalent of rails views. You can do it in JPA by annotating Java Classes (rails model). See hibernate annotations documentation. Hibernate is a popular implementation of JPA in Java.