org.springframework.orm.jpa.JpaSystemException：无法通过反射设置字段值[POST_INSERT_INDICATOR]值 [英] org.springframework.orm.jpa.JpaSystemException: Could not set field value [POST_INSERT_INDICATOR] value by reflection

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问题描述

我使用Spring Boot项目工作，并且拥有以下实体：

  @Entity 
 public class Ip {
 
 @Id 
 @GeneratedValue（strategy = GenerationType.IDENTITY）
 @Column（name =IP_ADDR_ID_2）
 private Long ID; 
 
 @Column（name =IP_ADDRESS_2）
 @NotEmpty 
私有字符串地址; 
 
 @OneToMany（cascade = CascadeType.ALL，mappedBy =ip）
 private List< IMAssociation> httpInfoMessages2; 
 
 
 $ / code>

消息实体在下面提供，

  @Entity 
公共类消息{
 
 @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>信息; 
}

最后，实体使得Ip和Message之间的关联为提供，

  @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长度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）
私人ip ip; 
 
 @ManyToOne 
 @PrimaryKeyJoinColumn（name =httpMessageId，referencedColumnName =S_ID_2）
 // @JoinColumn（name =httpMessageId，updatable = false，insertable = false，referencedColumnName =S_ID_2）
私人消息消息; 
 
 
 // @ManyToOne 
 @JoinColumn（name =IP_ADDRESS_2，updatable = false，insertable = false，referencedColumnName =IP_ADDRESS_2）
私有字符串地址; 
 
 @JoinColumn（name =STATUS_CODE，updatable = false，insertable = false，referencedColumnName =STATUS_ID_2）
 private长码; 
 $ b $ @ @CoinColumn（name =STATUS_MESSAGE，updatable = false，insertable = false，referencedColumnName =STATUS_2）
 private String codeMessage; 
 
 $ b public IMAssociation（）{
} 
 
 public IMAssociation（Long code，String codeMessage）{
 this.code = code; 
 this.codeMessage = codeMessage; 
 
 
 $ b $ / code> 

  List< IMAssociation>列表< IMAssociation>  imAssociations = new ArrayList<>（）; 
 
 for（int j = 0; j <5; j ++）{
 
 IMAssociation imAssociation = new IMAssociation（Long.valueOf（integerListEntry.getKey（）），
消息）; 
 imAssociations.add（imAssociation）; 
} 
 
 
 ip ip = new Ip（'127.0.0.1'，imAssociations）; 
 
清单< Ip> ips = new ArrayList<>（）; 
 ips.add（ip）;

当我试图保存 List< ip> 在数据库中，我得到以下错误：

 引起：org.springframework.orm.jpa.JpaSystemException：可能未通过反射设置字段值[POST_INSERT_INDICATOR]值：[class com.ef.entity.IMAssociation.id] com.ef.entity.IMAssociation.id的setter;嵌套异常是org.hibernate.PropertyAccessException：由反射无法设置字段值[POST_INSERT_INDICATOR]的值：[类com.ef.entity.IMAssociation.id] com.ef.entity.IMAssociation.id 
 $ B的设定器
 $ b导致：org.hibernate.PropertyAccessException：无法通过反射设置字段值[POST_INSERT_INDICATOR]值：[class com.ef.entity.IMAssociation.id] com.efity.IMAssociation.id的setter 
 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）〜[冬眠核-5.0.12.Final.jar：5.0.12.Final] 
。在org.hibernate.id.CompositeNestedGeneratedValueGenerator .GeneratorId（AbstractSaveEventListener.java： 101）〜[休眠核-5.0.12.Final.jar：5.0.12.Final]在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] 
在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] 
在org.hibernate.jpa.event的org.hibernate.internal.SessionImpl.persist（SessionImpl.java:758）〜[hibernate-core-5.0.12.Final.jar：5.0.12.Final] 
。 internal.core.JpaPersistEventListener $ 1.cascade（JpaPersistEventListener.java:80）〜[hibernate-entitymanager-5.0.12.Final.jar：5.0.12.Fina l] 
 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] 
在org.hibernate.engine.internal.Cascade.cascadeAssociation（Cascade.java:326）〜[hibernate-core-5.0.12。 Final.jar：5.0.12.Final] 
在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）〜 [休眠芯-5.0.12.Final.jar：5.0.12.Final] 
。在org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate（AbstractSaveEventListener.java:278）〜[冬眠核-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]在org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId（AbstractSaveEventListener.java:109）
〜[冬眠核-5.0.12.Final.jar：5.0.12.Final] 
。在org.hibernate.jpa.event.internal.core.JpaPersistEventListener.saveWithGeneratedId（JpaPersistEventListener.java:67）〜[冬眠-的EntityManager-5.0.12.Final.jar：5.0.12.Final] 
。在org.hibernate.event.internal.DefaultPersistEventListener.entit yIsTransient（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] 
在org.hibernate.internal.SessionImpl.persist（SessionImpl.java:748）〜[hibernate-core-5.0.12.Final.jar：5.0.12.Final] 
在org.hibernate.jpa.spi的org.hibernate.internal.SessionImpl.persist（SessionImpl.java:753）〜[hibernate-core-5.0.12.Final.jar：5.0.12.Final] 
。 AbstractEntityManagerImpl.persist（AbstractEntityManagerImpl.java:1146）〜[hibernate-entitymanager-5.0.12.Final.jar：5.0.12.Final] 
 at sun.reflect.Generat edMethodAccessor19.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] 
 
 
导致：java.lang.IllegalArgumentException：无法设置java.lang.Long字段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



我改变了 IMAssociation ， 

  @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长度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）
私人ip ip; 
 
 @ManyToOne 
 @PrimaryKeyJoinColumn（name =HTTP_MESSAGE_ID，referencedColumnName =S_ID_2）
 // @JoinColumn（name =httpMessageId，updatable = false，insertable = false，referencedColumnName =S_ID_2）
私人消息消息; 
 
 
 // @ManyToOne 
 @JoinColumn（name =IP_ADDRESS_2，updatable = false，insertable = false，referencedColumnName =IP_ADDRESS_2）
私有字符串地址; 
 
 @JoinColumn（name =STATUS_CODE，updatable = false，insertable = false，referencedColumnName =STATUS_ID_2）
 private长码; 
 $ b $ @ @CoinColumn（name =STATUS_MESSAGE，updatable = false，insertable = false，referencedColumnName =STATUS_2）
 private String codeMessage; 
 
 $ b public IMAssociation（）{
} 
 
 public IMAssociation（Long code，String codeMessage）{
 this.code = code; 
 this.codeMessage = codeMessage; 
 
 
 $ / code>

现在，我在运行应用程序，

 原因：javax.persistence.EntityExistsException：具有相同标识符值的不同对象已与会话关联： [com.ef.entity.IMAssociation＃IMAssociation {，ipAddressId = null，httpMessageId = null，ip = null，message = null，address ='null'，code = 404，codeMessage ='404_Not Found'}] 
在org.hibernate.jpa.spi.AbstractEntityManagerImpl.convert（AbstractEntityManagerImpl.java:1664）〜[hibernate-entitymanager-5.0.12.Final.jar：5.0.12.Final] 
在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]


解决方案

可能没有需要 ipAddressId 和 httpMessageId 我认为保存这些值的列在dblevel中由自动生成， @PrimaryKeyJoinColumn 注释和值可以通过 ip.getMessage（）在 IMAssociation 和 ip.getId（）。


I work with a Spring Boot project and I have the following entities, 

@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;

}

The message entity is provided below, 

@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;
}

And, lastly, the entity make the association between the Ip and the Message is provided, 

@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;
    }

}

The List<IMAssociation> is made therough the code, 

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);

When I tried to persist a List<Ip> in the database, I get the following error, 

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]

What is the issue here?

Update

I have changed the IMAssociation class and its provided below, 

@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;
    }
}

Now, I get the following error while I run the app, 

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]

解决方案

It might be that there is no need for ipAddressId and httpMessageId I think that columns holding those values are generated automatically in dblevel by @PrimaryKeyJoinColumn annotations and the value can be accessed in IMAssociation by ip.getMessage() and ip.getId().

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