Erris的博客

全注解SSH  一，hibernate annotation  Class注解：  1. @Entity：表明当前类是一个持久化类  2. @Table(name="team",catalog="NBA")：映射一个表team，所对应的数据库是NBA，可以省略  字段属性注解：  1. @GenericGenerator(name = "generator", strategy = "

严重: Servlet.service() for servlet [springmvc] in context with path [/XXX] threw exception [java.lang.NullPointerException] with root cause java.lang.NullPointerException     at org.apache.jsp.index_js...