org.hibernate.hql.internal.ast.QuerySyntaxException: account is not mapped [FROM account WHERE A_Username =? AND A_Password=? AND A_Flag=? AND A_Status=1]
参考：https://blog.csdn.net/sheng_xinjun/article/details/55260568
这个错误的原因在于hql语句写错了。
我的hql语句是
String hql = "FROM USER";
from后面接的应该是类名(User)，而不是表名(USER)。
所以正确的写法是String hql = "FROM User";
已解决
Caused by: org.hibernate.MappingException: Could not get constructor for org.hibernate.persister.entity.SingleTableEntityPersister
https://blog.csdn.net/liuzhengyang1/article/details/23127629
已解決 映射文件写错了
threw exception [Request processing failed; nested exception is java.lang.ClassCastException: java.lang.Boolean cannot be cast to com.oes.pojo.Student] with root cause
强制类型转换错误 原因：boolean --> object ----xxx-->student
关于springmvc重定向并传递参数
https://www.cnblogs.com/limengchen/p/6900162.html
According to TLD or attribute directive in tag file, attribute [items] does not accept any expressions
已解决 https://www.cnblogs.com/lz-wolf/archive/2011/03/31/2001074.html
