错误信息：
org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: Book; nested exception is org.hibernate.MappingException: Unknown entity: Book
Caused by: org.hibernate.MappingException: Unknown entity: Book
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:68)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:878)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:815)
at org.springframework.orm.hibernate3.HibernateTemplate$2.doInHibernate(HibernateTemplate.java:489)
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:372)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:483)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:477)
at cn.mybookshop.book.dao.impl.BookDAOImpl.findBookById(BookDAOImpl.java:48)
at cn.mybookshop.book.logic.impl.BookSrvImpl.findBookById(BookSrvImpl.java:49)
at cn.test.mybookshop.book.BookTest.main(BookTest.java:16)
解决方案：
book = (Book) getHibernateTemplate().get("Book",id);
加入包名：
book = (Book) getHibernateTemplate().get("com.bookshop.Book",id);
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