Question

我使用Spring Boot项目，我有以下实体，

@Entity
public class Ip {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "IP_ADDR_ID_2")
    private Long id;

    @Column(name = "IP_ADDRESS_2")
    @NotEmpty
    private String address;

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "ip")
    private List<IMAssociation> httpInfoMessages2;

}

下面提供了消息实体，

@Entity
public class Message {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "S_ID_2")
    private Long sId;

    @Column(name = "STATUS_ID_2")
    private Long statusId;

    @NotEmpty
    @Column(name = "STATUS_2")
    private String status;

    @OneToMany(cascade = CascadeType.ALL, mappedBy = "message")
    private List<IMAssociation> message;
}

最后，实体提供了Ip和Message之间的关联，

@Entity
@Table(name = "IP_HTTP_MESSAGE")
//@IdClass(AssociationId.class)
public class IMAssociation implements Serializable{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @Id
    @Column(name = "IP_ADDRESS_ID")
    private Long ipAddressId;

    @Id
    @Column(name = "HTTP_MESSAGE_ID")
    private Long httpMessageId;

    @ManyToOne
    @PrimaryKeyJoinColumn(name = "ipAddressId", referencedColumnName = "IP_ADDR_ID_2")
    //    @JoinColumn(name = "ipAddressId", updatable = false, insertable = false, referencedColumnName = "IP_ADDR_ID_2")
    private Ip ip;

    @ManyToOne
    @PrimaryKeyJoinColumn(name = "httpMessageId", referencedColumnName = "S_ID_2")
    //    @JoinColumn(name = "httpMessageId", updatable = false, insertable = false, referencedColumnName = "S_ID_2")
    private Message message;


//    @ManyToOne
    @JoinColumn(name = "IP_ADDRESS_2", updatable = false, insertable = false, referencedColumnName = "IP_ADDRESS_2")
    private String address;

    @JoinColumn(name = "STATUS_CODE", updatable = false, insertable = false, referencedColumnName = "STATUS_ID_2")
    private Long code;

    @JoinColumn(name = "STATUS_MESSAGE", updatable = false, insertable = false, referencedColumnName = "STATUS_2")
    private String codeMessage;


    public IMAssociation() {
    }

    public IMAssociation(Long code, String codeMessage) {
        this.code = code;
        this.codeMessage = codeMessage;
    }

}

List<IMAssociation>是通过代码制作的，

List<IMAssociation> imAssociations = new ArrayList<>();

for(int j =0; j < 5; j++){

     IMAssociation imAssociation = new IMAssociation(Long.valueOf(integerListEntry.getKey()),
                                            message);
    imAssociations.add(imAssociation);
}


Ip ip = new Ip('127.0.0.1', imAssociations); 

List<Ip> ips = new ArrayList<>();
ips.add(ip);

当我尝试在数据库中保留List<Ip>时，出现以下错误，

Caused by: org.springframework.orm.jpa.JpaSystemException: Could not set field value [POST_INSERT_INDICATOR] value by reflection : [class com.ef.entity.IMAssociation.id] setter of com.ef.entity.IMAssociation.id; nested exception is org.hibernate.PropertyAccessException: Could not set field value [POST_INSERT_INDICATOR] value by reflection : [class com.ef.entity.IMAssociation.id] setter of com.ef.entity.IMAssociation.id


Caused by: org.hibernate.PropertyAccessException: Could not set field value [POST_INSERT_INDICATOR] value by reflection : [class com.ef.entity.IMAssociation.id] setter of com.ef.entity.IMAssociation.id
    at org.hibernate.property.access.spi.SetterFieldImpl.set(SetterFieldImpl.java:58) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.mapping.Component$ValueGenerationPlan.execute(Component.java:419) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.id.CompositeNestedGeneratedValueGenerator.generate(CompositeNestedGeneratedValueGenerator.java:97) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:101) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:765) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:758) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener$1.cascade(JpaPersistEventListener.java:80) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:398) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:323) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:162) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeCollectionElements(Cascade.java:431) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeCollection(Cascade.java:363) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:326) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:162) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:111) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:456) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:278) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:178) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:109) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId(JpaPersistEventListener.java:67) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:189) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:132) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:58) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:775) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:748) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:753) ~[hibernate-core-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1146) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source) ~[na:na]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_144]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_144]


Caused by: java.lang.IllegalArgumentException: Can not set java.lang.Long field com.ef.entity.IMAssociation.id to org.hibernate.id.IdentifierGeneratorHelper$2
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) ~[na:1.8.0_144]
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) ~[na:1.8.0_144]
    at sun.reflect.UnsafeObjectFieldAccessorImpl.set(UnsafeObjectFieldAccessorImpl.java:81) ~[na:1.8.0_144]

这里有什么问题？

Update

我已更改IMAssociation类及其下面提供的内容，

@Entity
@Table(name = "IP_HTTP_MESSAGE")
//@IdClass(AssociationId.class)
public class IMAssociation implements Serializable {

//    @Id
//    @GeneratedValue(strategy = GenerationType.IDENTITY)
//    private Long id;

    @Id
    @Column(name = "IP_ADDRESS_ID")
    private Long ipAddressId;

    @Id
    @Column(name = "HTTP_MESSAGE_ID")
    private Long httpMessageId;

    @ManyToOne
    @PrimaryKeyJoinColumn(name = "IP_ADDRESS_ID", referencedColumnName = "IP_ADDR_ID_2")
//    @JoinColumn(name = "ipAddressId", updatable = false, insertable = false, referencedColumnName = "IP_ADDR_ID_2")
    private Ip ip;

    @ManyToOne
    @PrimaryKeyJoinColumn(name = "HTTP_MESSAGE_ID", referencedColumnName = "S_ID_2")
//    @JoinColumn(name = "httpMessageId", updatable = false, insertable = false, referencedColumnName = "S_ID_2")
    private Message message;


    //    @ManyToOne
    @JoinColumn(name = "IP_ADDRESS_2", updatable = false, insertable = false, referencedColumnName = "IP_ADDRESS_2")
    private String address;

    @JoinColumn(name = "STATUS_CODE", updatable = false, insertable = false, referencedColumnName = "STATUS_ID_2")
    private Long code;

    @JoinColumn(name = "STATUS_MESSAGE", updatable = false, insertable = false, referencedColumnName = "STATUS_2")
    private String codeMessage;


    public IMAssociation() {
    }

    public IMAssociation(Long code, String codeMessage) {
        this.code = code;
        this.codeMessage = codeMessage;
    }
}

现在，我在运行应用程序时遇到以下错误，

Caused by: javax.persistence.EntityExistsException: A different object with the same identifier value was already associated with the session : [com.ef.entity.IMAssociation#IMAssociation{, ipAddressId=null, httpMessageId=null, ip=null, message=null, address='null', code=404, codeMessage='404_Not Found'}]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1664) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1602) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1608) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at org.hibernate.jpa.spi.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:1152) ~[hibernate-entitymanager-5.0.12.Final.jar:5.0.12.Final]
    at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source) ~[na:na]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_144]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_144]

Answer 1

这是你的问题： https://hibernate.atlassian.net/browse/HHH-6044

SO中的类似帖子：Hibernate @GeneratedValue in a composite key

这里有3个选项：

您仍然可以实现复合键，但必须删除IMAssociation实体中自动生成的ID。您的复合密钥只包含2个属性 - ipAddressId和httpMessageId，它们分别来自Address和Message实体的派生/外键。
或者您实施了一个主键：此处您可以通过IDENTITY策略使用ID自动生成，但您必须删除您声明的其他ID字段 - ipAddressId和httpMessageId。
如果您仍想保留3个Id标识字段 - id，ipAddressId和httpMessageId，请删除ID自动生成（@GeneratedValue注释）并手动分配您的IMAssociation实体的ID值。

Answer 2

可能不需要ipAddressId和httpMessageId我认为保存这些值的列是通过@PrimaryKeyJoinColumn注释在dblevel中自动生成的，并且可以在{{}}中访问该值{1}} IMAssociation和ip.getMessage()。

org.springframework.orm.jpa.JpaSystemException：无法通过反射设置字段值[POST_INSERT_INDICATOR]值

2 个答案: