我不断收到以下错误:“无法找到命名参数[articleCommentId]”但它对我来说没有意义,因为对我来说命名参数非常到位。JPA无法找到命名参数
public ArticleCommentForDisplay getCommentByArticleCommentId(BigInteger articleCommentId) {
String queryString = "select c.article_comment_id, "
+ " c.article_id, "
+ " c.parent_comment_id, "
+ " p.nickname, "
+ " c.title, "
+ " c.comment, "
+ " c.person_id, "
+ " c.confirmed_user, "
+ " c.comment_depth, "
+ " c.moderation_rank, "
+ " c.moderation_reason, "
+ " c.hide, "
+ " c.hide_reason, "
+ " c.session_id, "
+ " c.confirmation_uuid, "
+ " c.created_timestamp, "
+ " c.created_by_id, "
+ " c.updated_timestamp, "
+ " c.updated_by_id, "
+ " c.update_action, "
+ " null as comment_path "
+ "from article_comment c "
+ " join person p "
+ " on p.person_id = c.person_id "
+ "where c.article_comment_id = :articleCommentId; ";
Query query = em.createNativeQuery(queryString, "ArticleCommentMap");
query.setParameter("articleCommentId", articleCommentId);
List <ArticleCommentForDisplay> articleComments = new ArrayList<>();
articleComments = query.getResultList();
ArticleCommentForDisplay theComment = articleComments.get(0);
return (theComment);
}
下面是相关的错误堆栈跟踪的摘录:
Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: could not locate named parameter [articleCommentId]
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:379)
at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:72)
at com.extremelatitudesoftware.content.ArticleCommentFacade.getCommentByArticleCommentId(ArticleCommentFacade.java:293)
就是这样。奇怪的是,在另一个本地查询中,这没有问题。但是对于那个,参数在查询中间(递归查询中的根选择)。我想我只是把它包括在里面,它工作。作为人类,我只记得最后一件工作,因为在我需要的其他几个本地查询中,我没有包含分号。当然,他们工作。 @我发现CycDemo的答案在技术上是正确的,另一个答案显示规范说明了这一点。但对于Postgres + hibernate命名参数似乎可以工作,并且可以制作更易于理解的代码。 – BillR