严重: Exception occurred during processing request: user is not mapped [from user where username=:username and userpwd=:userpwd]
org.hibernate.hql.internal.ast.QuerySyntaxException: user is not mapped [from user where username=:username and userpwd=:userpwd]
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:180)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:110)
sql代码是这样写的：
String sql="from
user where username=:username and userpwd=:userpwd";
user is not mapping
改成
String sql="from User
where username=:username and userpwd=:userpwd";
经过上网查找原因，原来是user第一个字母应大写，此处HQL语言用的是持久类User。
Hql 用的是持久类，以及它的查询逻辑底层还真是不了解呢。去了解一下。