Hibernate QuerySyntaxException:未映射

我正在使用 Jersey 和 Hibernate . 数据库是 MySQL . 我的设计中有两层 dao layer , service layer 和 REST layer

NotificationJSONService.java (休息层)

@GET
    @Path("/getActiveNotifications")
    @Produces (MediaType.APPLICATION_JSON)
    public List<Notification> getActiveNotifications()
    {
        NotificationService service = new NotificationService();
        List<Notification> notificationsByUser = service.getActiveNotifications();
        return notificationsByUser;
    }

NotificationService.java (服务层)

public List<Notification>getActiveNotifications()
    {
        Session session = getSession();
        Transaction transaction = null;
        List<Notification> list = new ArrayList<Notification>();

        try
        {
            transaction = getTransaction(session);
            list = notificationInterface.getActiveNotifications(session);
            transaction.commit();

        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
            session.close();

            for (int i = 0; i < list.size(); i++) {
                User user = new User();
                user.setIduser(list.get(i).getUser().getIduser());
                list.get(i).setUser(user);

                Product product = new Product();
                product.setIdproduct(list.get(i).getProduct().getIdproduct());
                list.get(i).setProduct(product);

                NotificationType notificationType = new NotificationType();
                notificationType.setIdnotificationType(list.get(i).getNotificationType().getIdnotificationType());
                list.get(i).setNotificationType(notificationType);
            }
        }

        return list;
    }

(DAO层)

@Override
    public List<Notification> getActiveNotifications(Session session) 
    {
        Query query = session.createQuery("from notification where delete_timestamp IS NULL");
        List list = query.list();
        return list;
    }

如您所见,以上所有代码都与一个名为 notification . 以下是 通知 bean信息。

public class Notification  implements java.io.Serializable {


     private Integer idnotification;
     private NotificationType notificationType;
     private Product product;
     private User user;
     private Date deleteTimestamp;
     private Date dateCreated;
     private Date lastUpdated;

    public Notification() {
    }

    public Integer getIdnotification() {
        return this.idnotification;
    }

    public void setIdnotification(Integer idnotification) {
        this.idnotification = idnotification;
    }
    public NotificationType getNotificationType() {
        return this.notificationType;
    }

    public void setNotificationType(NotificationType notificationType) {
        this.notificationType = notificationType;
    }
    public Product getProduct() {
        return this.product;
    }

    public void setProduct(Product product) {
        this.product = product;
    }
    public User getUser() {
        return this.user;
    }

    public void setUser(User user) {
        this.user = user;
    }
    public Date getDeleteTimestamp() {
        return this.deleteTimestamp;
    }

    public void setDeleteTimestamp(Date deleteTimestamp) {
        this.deleteTimestamp = deleteTimestamp;
    }
    public Date getDateCreated() {
        return this.dateCreated;
    }

    public void setDateCreated(Date dateCreated) {
        this.dateCreated = dateCreated;
    }
    public Date getLastUpdated() {
        return this.lastUpdated;
    }

    public void setLastUpdated(Date lastUpdated) {
        this.lastUpdated = lastUpdated;
    }
}

Notification.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Jan 31, 2019, 6:16:44 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
    <class name="xxx.xxx.api.beans.Notification" table="notification" catalog="xxx" optimistic-lock="version">
        <id name="idnotification" type="java.lang.Integer">
            <column name="idnotification" />
            <generator class="identity" />
        </id>
        <many-to-one name="notificationType" class="xxx.xxx.api.beans.NotificationType" fetch="select">
            <column name="notification_type_idnotification_type" not-null="true" />
        </many-to-one>
        <many-to-one name="product" class="xxx.xxx.api.beans.Product" fetch="select">
            <column name="product_idproduct" not-null="true" />
        </many-to-one>
        <many-to-one name="user" class="xxx.xxx.api.beans.User" fetch="select">
            <column name="user_iduser" not-null="true" />
        </many-to-one>
        <property name="deleteTimestamp" type="timestamp">
            <column name="delete_timestamp" length="19" />
        </property>
        <property name="dateCreated" type="timestamp">
            <column name="date_created" length="19" />
        </property>
        <property name="lastUpdated" type="timestamp">
            <column name="last_updated" length="19" not-null="true" />
        </property>
    </class>
</hibernate-mapping>

以下是 通知 SQL表

CREATE TABLE IF NOT EXISTS `notification` (
  `idnotification` INT NOT NULL AUTO_INCREMENT,
  `user_iduser` INT NOT NULL,
  `product_idproduct` INT NOT NULL,
  `notification_type_idnotification_type` INT NOT NULL,
  `delete_timestamp` TIMESTAMP NULL,
  `date_created` TIMESTAMP NULL,
  `last_updated` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`idnotification`),
  INDEX `fk_notification_user1_idx` (`user_iduser` ASC),
  INDEX `fk_notification_product1_idx` (`product_idproduct` ASC),
  INDEX `fk_notification_notification_type1_idx` (`notification_type_idnotification_type` ASC),
  CONSTRAINT `fk_notification_user1`
    FOREIGN KEY (`user_iduser`)
    REFERENCES `user` (`iduser`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fk_notification_product1`
    FOREIGN KEY (`product_idproduct`)
    REFERENCES `product` (`idproduct`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION,
  CONSTRAINT `fk_notification_notification_type1`
    FOREIGN KEY (`notification_type_idnotification_type`)
    REFERENCES `notification_type` (`idnotification_type`)
    ON DELETE NO ACTION
    ON UPDATE NO ACTION)

当我运行 getActiveNotifications http://localhost:8080/XXX/rest/notification/getActiveNotifications

org.hibernate.hql.internal.ast.QuerySyntaxException: notification is not mapped [from notification where delete_timestamp IS NULL]
    at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:96)
    at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:120)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:234)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:158)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:126)
    at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:88)
    at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:190)
    at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:301)
    at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:236)
    at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1796)
    at xxx.xxx.api.dao.notification.NotificationDAOImpl.getActiveNotifications(NotificationDAOImpl.java:101)
    at xxx.xxx.api.service.NotificationService.getActiveNotifications(NotificationService.java:299)
    at xxx.xxx.api.rest.NotificationJSONService.getActiveNotifications(NotificationJSONService.java:114)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:148)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:191)
    at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:243)
    at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:103)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415)
    at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:272)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:268)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:316)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:298)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:268)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703)
    at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:668)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: notification is not mapped
    at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:189)
    at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:109)
    at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:95)
    at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:331)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3633)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3522)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:706)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:562)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:299)
    at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:247)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:278)
    at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:206)
    ... 58 more

这里的问题是什么?也请注意 MySQL delete_timestamp deleteTimestamp 但两人最终都犯了同样的错误。