我是新的maven和java。我正在开发一个maven项目,我想从mysql数据库中选择多行数据。 以下代码已从下面的链接复制。但它不起作用。我搜查了很多,发现了一些相同的结果。但它们都不起作用。我不知道我该怎么做。键入的查询异常
JPA, Entity manager, select many columns and get result list custom objects
我的代码:
try{
EntityManagerFactory factory = Persistence.createEntityManagerFactory("com.mycompany_LinkedIn_war_1.0-SNAPSHOTPU");
EntityManager em = factory.createEntityManager();
TypedQuery<KarjooSearchInfo[]> q = em.createQuery(" SELECT name,education,gender,more,time FROM karjoo_search_info WHERE 1 ", KarjooSearchInfo[].class);
List<KarjooSearchInfo[]> resultList = q.getResultList();
do something...
}catch....
的例外是:
An exception occurred while creating a query in EntityManager:
Exception Description: Syntax error parsing [ SELECT name,education,gender,more,time FROM `karjoo_search_info` WHERE 1 ].
[69, 69] An identification variable must be provided for a range variable declaration.
[75, 76] The expression is not a valid conditional expression.
TNX你的答案。但你的解决方案不起作用! –
createQuery接受JPQL。它不采用SQL。 –