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Servlet.service() for servlet jsp threw exception java.lang.NullPointerException

at org.apache.jsp.Tes2.Input2_jsp._jspService(Input2_jsp.java:116) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http ...
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Hibernate出现java.lang.NullPointerException异常，什么问题？

我使用MyEclpise进行开发，使用Hibernate将SQL Server中的表转化为类，然后写了一个Dao的类，文件如下： 怎么在执行的时候，出现java.lang.NullPointerException，是怎么回事？出错的是在 Session session = HibernateSessionFactory.getSession();，哪位帮忙给看看？ 会不会因为连接的是SQL ...
Ars Technica

java.langNullPointerException

I started getting the above error when trying to go to the esis.ncwise.org home page today. I can log on that computer as another user and get there fine ...