修改密码出错及解决方案

时间：2007-08-22 来源：sdwsyjp

错误代码: Teachers teacher=(Teachers) request.getSession().getAttribute("teacher");
  if(teacher.getPassword().equals(teacherchangepwdForm.getOldpwd())){
   teacher.setPassword(teacherchangepwdForm.getNewpwd());
   TeachersDAO teacherDAO=new TeachersDAO();
   teacherDAO.save(teacher);
   request.setAttribute("teacherpwd", "ok");
      return mapping.findForward("teacherchange");
  } 在数据库的show_sql中显示insert(...........); 解决方案: Teachers teacher=(Teachers) request.getSession().getAttribute("teacher");
  if(teacher.getPassword().equals(teacherchangepwdForm.getOldpwd())){    //将主键添加到对象之中,解决问题!~
   teacher.setTeacherid(teacher.getTeacherid());
   teacher.setPassword(teacherchangepwdForm.getNewpwd());
   TeachersDAO teacherDAO=new TeachersDAO();
   teacherDAO.save(teacher);
   request.setAttribute("teacherpwd", "ok");
      return mapping.findForward("teacherchange");
  }

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