Question

我是hibernate的新手。在HQL查询中发送静态参数时，其工作正常。在setParameter方法中发送时，它会给出空指针异常。请帮助我做错了。

        /** HQL Query **/
         String hql = "FROM MUser mUser where mUser.uEmail = :email AND mUser.uPassword = :password";
           Query query = getCurrentSession().createQuery(hql);
           query.setParameter("email", "xyz@fsndk.com");
           query.setParameter("password", "12345678");

            MUser muser = (MUser) query.uniqueResult();

模型类

/** Mapping Class **/

@Entity
@Table(name="tbl_users")
public class MUser implements Serializable {


    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    int uId;

    String uName;

    String uMobile;
    String uAddress;
    String uEmail;
    String uPassword;

...

}

错误发生

org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException
    org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:973)
    org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
    org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)

Hibernate Query返回null Object

0 个答案: