DBflute
 一、
 UsertblBhv  usertblBhv = new UsertblBhv ();
  Usertbl usertbl = new Usertbl();
  public Class<?> doLogin() {

 usertbl.setUserSerno(userSerno);
 usertbl.setUserId(insUserId);
 usertbl.setUserName(insUserName);
 usertbl.setUserPwd(insUserPwd);
 usertbl.setUserTele(insUserTele);
 usertbl.setUserFax(insUserFax);
 usertbl.setUserMp(insUserMp);
 usertbl.setAuthCode("user");
 usertbl.setNote(insNote);
 usertbl.setDisplayOrder(1);
 usertbl.setVersionNo(2);
 usertbl.setDelFlag(null);
 usertbl.setUpdUserid("2");
 usertbl.setUpdUsername("2");
 usertbl.setUpdDate(null);
   
   usertblBhv.insert(usertbl); 
   }

报?Look! Read the message below. /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Not found the auto set-upper of common column in the behavior! [Advice] Please confirm the definition of the set-upper at your component configuration of DBFlute. [Behavior] Behavior for usertbl [Attribute] behaviorCommandInvoker : null behaviorSelector : null commonColumnAutoSetupper : null * * * * * * * * * */
怎么破 

二、
public String showUserName;

UsertblBhv usertblBhv = new UsertblBhv() ;

public Class<?> prerender() {
                Usertbl usertbl = usertblBhv.selectByPKValueWithDeletedCheck  (sessionDto.userInfoDto.userSerno);
showUserName = usertbl.getUserId();
return null;
}
报空指针异常,help.
------解决方案--------------------
哪里、什么时候报的，异常信息呢