hibernate xx(tableName) is not mapped

数据库中表名是：book,数据库表名不区分大小写的

之后我在hibernate 使用book， 

         String sql="from book";
         Query query=session.createQuery(sql);
         List<Book> books=query.list();
         for(Book book1:books)
         {
             System.out.println(book1.getName()+book1.getAuthor()+book1.getPrice()+book1.getId());
         } 

 报错：

Exception in thread "main" org.hibernate.hql.ast.QuerySyntaxException: book is not mapped [from book]

之后检查map 配置,book mapping 后是Book，将book->Book就好用了

<hibernate-mapping>
<class name="data.Book" table="book" catalog="study">
<id name="id" type="java.lang.Integer">
<column name="id" />