org.hibernate.hql.ast.QuerySyntaxException:

最新推荐文章于 2020-06-03 13:01:58 发布

原创最新推荐文章于 2020-06-03 13:01:58 发布 · 642 阅读

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文章标签：

#exception #hibernate #org.hibernate.hql.as

本文介绍了一种常见的Hibernate HQL查询异常：s_product is not mapped错误，并提供了详细的堆栈跟踪来帮助理解问题所在。文章指出问题通常源于配置文件中的表名错误或HQL语句中的表名与类名不匹配。

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org.hibernate.hql.ast.QuerySyntaxException: s_product is not mapped [from s_product where pid=99]
at org.hibernate.hql.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:180)
at org.hibernate.hql.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:111)
at org.hibernate.hql.ast.tree.FromClause.addFromElement(FromClause.java:93)
at org.hibernate.hql.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:327)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3441)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3325)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:733)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:584)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:301)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:244)
at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254)
at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101)
at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:124)
at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156)
at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1770)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:345)
at com.sun.proxy.$Proxy2.createQuery(Unknown Source)
at dao.ProductDao.getProduct(ProductDao.java:14)
at biz.ProductBiz.getProduct(ProductBiz.java:21)
at servlet.Test.main(Test.java:13)
Exception in thread "main" java.lang.NullPointerException

at servlet.Test.main(Test.java:13)

一般出现这个问题要不就是你的配置文件里的表名错了

要么就是hql的语句错误，hql的表名和字段是对应你的类的属性，如果没有习惯的话会很容易把表名写上去，应该写类名