问题描述

麻烦大家帮我看看问题出在哪里

public class UpdateAction extends DispatchAction {

private UserServiceInter userService;public void setUserService(UserServiceInter userService) {    this.userService = userService;}

//修改信息，真正添加到数据库 updateInfo
public ActionForward updateInfo(ActionMapping mapping ActionForm form
HttpServletRequest request HttpServletResponse response) {

    //将字符串转化为日期类型    DateFormat format = new SimpleDateFormat(""yyyy-MM-dd"");    //得到当前用户[从session取出]    Users loginUser = (Users) request.getSession().getAttribute(""loginuser"");    //从表单中获取修改个人的信息(birthtelwebsitemsnbookmoviemusicsportcartoon)    UserForm userForm = (UserForm)form;    try{       loginUser.setBirth(format.parse(userForm.getBirth()));    }catch(ParseException e){        e.printStackTrace();    }    //System.out.println(userForm.getBirth());    //System.out.println(loginUser.getBirth());    loginUser.setTel(userForm.getTel());    loginUser.setWebsite(userForm.getWebsite());    loginUser.setMsn(userForm.getMsn());    loginUser.setBook(userForm.getBook());    loginUser.setMovie(userForm.getMovie());    loginUser.setMusic(userForm.getMusic());    loginUser.setSport(userForm.getSport());    loginUser.setCartoon(userForm.getCartoon());    //保存用户    userService.save(loginUser);    return mapping.findForward(""goHomePageUI"");}

}
异常信息如下：
javax.servlet.ServletException: org.springframework.dao.DataIntegrityViolationException: Could not execute JDBC batch update; nested exception is org.hibernate.exception.ConstraintViolationException: Could not execute JDBC batch update

指示是userService.save(loginUser);这行代码有问题。求指教

解决方案

其中有一个字段不允许为空，需要给它赋值就可以了
2.DataIntegrityViolationException
not-null
你把数据库中的属性全都改为允许为空！解决问题！
非空属性引用了一个空的或者瞬时(游离状态)的值，可能是引用的值还没有进行持久化吧，还处于游离状态

解决方案二：
看看这张表的hibernate配置，主键是否正确，是否可能会重复