title: spring hibernate - dao.save(object) return null pointer exception
body: <p>can anyone help me with the following thread? 
  <a href="http://forum.springsource.org/showthread.php?110248-dao.save%28object%29-java.lang.NullPointerException&amp;p=365538#post365538" rel="nofollow">http://forum.springsource.org/showthread.php?110248-dao.save%28object%29-java.lang.NullPointerException&amp;p=365538#post365538</a></p>
  
  <p>Many thannks</p>