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我正在使用JPA/Hibernate 我想知道如何使用createquery來檢索列表。 我曾嘗試:如何使用對象查詢語言從查詢中獲取結果列表
EntityManagerFactory emf=Persistence.createEntityManagerFactory("JiraMapPUKPI");
EntityManager em= emf.createEntityManager();
EntityTransaction entr=em.getTransaction();
entr.begin();
Query multipleSelect =em.createQuery("select distinct k.kpiName FROM Kpi k ,ProfilUser p ,AssociationKpiProfil a WHERE p.profilUserId= :w and p.profilUserId= a.profilUser and a.kpi=k.kpiId ").setParameter("w", userid);
但後來我不能使用:
List userList = (List)multipleSelect.getResultList();
因爲multipleSelect不包含getResultList方法
我試圖也:
javax.persistence.Query multipleSelect= em.createQuery("select k.kpiName FROM Kpi k ,ProfilUser p ,AssociationKpiProfil a WHERE p.profilUserId= :w and p.profilUserId= a.profilUser and a.kpi=k.kpiId ");
multipleSelect.setParameter("w", userid);
List usrpro= multipleSelect.getResultList();
但這出現錯誤:
EL Warning]: 2011-06-21 08:53:08.81--UnitOfWork(6850900)--Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.2.0.v20110202-r8913): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID)' at line 1
Error Code: 1064
Call: SELECT t0.KPI_NAME FROM association_kpi_profil t3, profil_user t2, profil_user , kpi t0 WHERE ((((t1.PROFIL_USER_ID = ?) AND (t1.PROFIL_USER_ID =)) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID))
bind => [1 parameter bound]
Query: ReportQuery(referenceClass=Kpi sql="SELECT t0.KPI_NAME FROM association_kpi_profil t3, profil_user t2, profil_user t1, kpi t0 WHERE ((((t1.PROFIL_USER_ID = ?) AND (t1.PROFIL_USER_ID =)) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID))")
Internal Exception: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID)' at line 1
Error Code: 1064
Call: SELECT t0.KPI_NAME FROM association_kpi_profil t3, profil_user t2, profil_user t1, kpi t0 WHERE ((((t1.PROFIL_USER_ID = ?) AND (t1.PROFIL_USER_ID =)) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID))
bind => [1 parameter bound]
Query: ReportQuery(referenceClass=Kpi sql="SELECT t0.KPI_NAME FROM association_kpi_profil t3, profil_user t2, profil_user t1, kpi t0 WHERE ((((t1.PROFIL_USER_ID = ?) AND (t1.PROFIL_USER_ID =)) AND (t3.KPI_ID = t0.KPI_ID.t0.KPI_ID)) AND (t2.PROFIL_USER_ID = t3.PROFIL_ID))")
errrrrs
list kpiiiiiiiinull
請問我該怎麼做? 謝謝
你好,錯誤是在我的SQL請求:),而不是p.profilUserId = a.profilUser它應該是p = a.profilUser – ramram