java - Hibernate查询表中不再存在的字段

Question

我有一个实体，它与另一个实体具有多对一的映射。 这是映射:

@JoinColumn(name = "user_id", referencedColumnName = "id")
 @ManyToOne 
private User user;

在对象(和表)用户中，我曾经有一个名为authorityId的字段。我从表和对象中删除了该字段。 现在，当我在对象上使用 find() 时，Hibernate 会生成一个查询，其中包括旧字段，但不包括我添加到表中(并映射到对象中)的新字段。

请注意，这种情况不会一直发生，大多数时候查询运行良好，但每隔一段时间我就会收到异常MySQLSyntaxErrorException:未知列。

我找不到原因，有什么想法吗？

我使用的查找是 JPA 的 find(Long id):entry =auditLogDAO.find(id);

User对象的代码:

@Entity
@Table(name = "users")
public class User implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name="id",unique=true, nullable=false )
    @GeneratedValue( strategy = IDENTITY )
    private Long id;

    @Column(name ="username",unique=true, nullable=false)
    @Field(index = Index.TOKENIZED, store = Store.NO)
    private String username;

    @Column
    private String password;

    @Column
    private int enabled;

    @OneToOne
    @JoinColumn(name = "current_account", referencedColumnName = "id")
    private Account currentAccount;

    @OneToOne
    @JoinColumn(name = "original_account", referencedColumnName = "id")
    private Account originalAccount;

    @OneToMany
    @JoinColumn(name = "user_id", referencedColumnName = "id")
    private List<Authority> authorities;

    @Column(name="first_name")
    @Field(index = Index.TOKENIZED, store = Store.NO)
    private String firstName;

    @Column(name="last_name")
    @Field(index = Index.TOKENIZED, store = Store.NO)
    private String lastName;

    @Column(name="email",unique=true, nullable=false )
    @Field(index = Index.TOKENIZED, store = Store.NO)
    private String email;

    @Column(name="switch_allowed")
    private Boolean switchAllowed;

    @Lob
    @Column(name = "additional_emails")
    private String additionalEmails;

权限表:

@Entity
@Table(name = "authorities")
public class Authority implements Serializable{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name = "id")
    @GeneratedValue( strategy = IDENTITY )
    private Long id;

    @Column(name = "user_id")
    private Long userId;

    @Column(name = "authority")
    private String authority;

完整的堆栈跟踪(如果您可以看到，在 hibernate 生成的查询中存在 user6_.authority_id，该列在映射中不再存在):

org.springframework.dao.InvalidDataAccessResourceUsageException: could not load an entity: [com.legolas.model.AuditLog#3048]; SQL [select auditlog0_.id as id26_8_, auditlog0_.account_id as account8_26_8_, auditlog0_.date as date26_8_, auditlog0_.domain_object_id as domain3_26_8_, auditlog0_.event_type as event4_26_8_, auditlog0_.notified as notified26_8_, auditlog0_.object_type as object6_26_8_, auditlog0_.object_xml as object7_26_8_, auditlog0_.user_id as user9_26_8_, account1_.id as id7_0_, account1_.account_type as account2_7_0_, account1_.name as name7_0_, account1_1_.adserver_id as adserver3_8_0_, account1_1_.stamping_method as stamping1_8_0_, account1_3_.advertiser_id as advertiser2_30_0_, account1_4_.brand_id as brand2_54_0_, account1_5_.in_use as in1_58_0_, account1_5_.order_by as order2_58_0_, account1_6_.agency_id as agency2_60_0_, case when account1_1_.account_id is not null then 1 when account1_2_.account_id is not null then 2 when account1_3_.account_id is not null then 3 when account1_4_.account_id is not null then 4 when account1_5_.account_id is not null then 5 when account1_6_.account_id is not null then 6 when account1_.id is not null then 0 end as clazz_0_, adserver2_.id as id0_1_, adserver2_.name as name0_1_, case when adserver2_1_.adserver_id is not null then 1 when adserver2_2_.adserver_id is not null then 2 when adserver2_.id is not null then 0 end as clazz_1_, advertiser3_.account_id as id7_2_, advertiser3_1_.account_type as account2_7_2_, advertiser3_1_.name as name7_2_, advertiser3_.agency_id as agency2_60_2_, brand4_.account_id as id7_3_, brand4_1_.account_type as account2_7_3_, brand4_1_.name as name7_3_, brand4_.advertiser_id as advertiser2_30_3_, agency5_.account_id as id7_4_, agency5_1_.account_type as account2_7_4_, agency5_1_.name as name7_4_, user6_.id as id6_5_, user6_.additional_emails as additional2_6_5_, user6_.authority_id as authority10_6_5_, user6_.email as email6_5_, user6_.enabled as enabled6_5_, user6_.first_name as first5_6_5_, user6_.last_name as last6_6_5_, user6_.original_authority as original11_6_5_, user6_.password as password6_5_, user6_.switch_allowed as switch8_6_5_, user6_.username as username6_5_, authority7_.id as id5_6_, authority7_.account_id as account2_5_6_, authority7_.authority as authority5_6_, authority7_.username as username5_6_, authority8_.id as id5_7_, authority8_.account_id as account2_5_7_, authority8_.authority as authority5_7_, authority8_.username as username5_7_ from audit_log auditlog0_ left outer join accounts account1_ on auditlog0_.account_id=account1_.id left outer join publishers account1_1_ on account1_.id=account1_1_.account_id left outer join agencies account1_2_ on account1_.id=account1_2_.account_id left outer join brands account1_3_ on account1_.id=account1_3_.account_id left outer join products account1_4_ on account1_.id=account1_4_.account_id left outer join data_vendors account1_5_ on account1_.id=account1_5_.account_id left outer join advertisers account1_6_ on account1_.id=account1_6_.account_id left outer join adservers adserver2_ on account1_1_.adserver_id=adserver2_.id left outer join ad_server_agency adserver2_1_ on adserver2_.id=adserver2_1_.adserver_id left outer join ad_server_publisher adserver2_2_ on adserver2_.id=adserver2_2_.adserver_id left outer join advertisers advertiser3_ on account1_3_.advertiser_id=advertiser3_.account_id left outer join accounts advertiser3_1_ on advertiser3_.account_id=advertiser3_1_.id left outer join brands brand4_ on account1_4_.brand_id=brand4_.account_id left outer join accounts brand4_1_ on brand4_.account_id=brand4_1_.id left outer join agencies agency5_ on account1_6_.agency_id=agency5_.account_id left outer join accounts agency5_1_ on agency5_.account_id=agency5_1_.id left outer join users user6_ on auditlog0_.user_id=user6_.id left outer join authorities authority7_ on user6_.authority_id=authority7_.id left outer join authorities authority8_ on user6_.original_authority=authority8_.id where auditlog0_.id=?]; nested exception is org.hibernate.exception.SQLGrammarException: could not load an entity: [com.legolas.model.AuditLog#3048] at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:629) at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:100) at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.translateExceptionIfPossible(AbstractEntityManagerFactoryBean.java:368) at org.springframework.dao.support.ChainedPersistenceExceptionTranslator.translateExceptionIfPossible(ChainedPersistenceExceptionTranslator.java:58) at org.springframework.dao.support.DataAccessUtils.translateIfNecessary(DataAccessUtils.java:213) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:163) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at $Proxy317.find(Unknown Source) at com.legolas.notifications.jobs.NotificationJob.asapNotification(NotificationJob.java:133) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:273) at org.springframework.scheduling.support.MethodInvokingRunnable.run(MethodInvokingRunnable.java:65) at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:51) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) Caused by: org.hibernate.exception.SQLGrammarException: could not load an entity: [com.legolas.model.AuditLog#3048] at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92) at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66) at org.hibernate.loader.Loader.loadEntity(Loader.java:1957) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3270) at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496) at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477) at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227) at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285) at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152) at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1080) at org.hibernate.impl.SessionImpl.get(SessionImpl.java:997) at org.hibernate.impl.SessionImpl.get(SessionImpl.java:990) at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:554) at org.hibernate.ejb.AbstractEntityManagerImpl.find(AbstractEntityManagerImpl.java:529) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240) at $Proxy236.find(Unknown Source) at com.legolas.dao.GenericDAOWithJPA.find(GenericDAOWithJPA.java:55) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:155) ... 23 more Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'user6_.authority_id' in 'field list' at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:532) at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) at com.mysql.jdbc.Util.getInstance(Util.java:381) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1030) at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3491) at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3423) at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936) at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060) at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542) at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734) at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1885) at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93) at org.hibernate.jdbc.AbstractBatcher.getResultSet(AbstractBatcher.java:208) at org.hibernate.loader.Loader.getResultSet(Loader.java:1869) at org.hibernate.loader.Loader.doQuery(Loader.java:718) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:270) at org.hibernate.loader.Loader.loadEntity(Loader.java:1953) ... 51 more

Answer 1

我怀疑您仍然映射了与您的用户有关系的权限(权限表)。这很可能会映射到authority_id，从而导致您的问题。修复权限映射或将其完全删除。如果不是这种情况，您将在加载旧版本的模型时遇到类加载问题。