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原文：http://www.vogella.com/articles/JavaPersistenceAPI/article.htmlLarsVogelVersion 2.2Copyright © 2008, 2009, 2010, 2011, 2012 Lars Vogel16.03.2012Revision HistoryRevision 0.103.02.2008LarsVogelCreatedRevision 0.2 - 2.229.09.2008 - 16.03.2012LarsVogelbug fixes and enhancementsJPA with Eclipseli 阅读全文