StackOverflow Exception while using Hibernate and Jackson on bi-directional objects

Question

I am trying some hibernate.The following is the pojo I am using,

@Entity
@Table(name = "person")
public class Person {

    @Id
    @GeneratedValue
    @Column(name = "person_id")
    private long person_id;


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


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


    @OneToMany(fetch = FetchType.EAGER, mappedBy = "person" )
    private Set phone;

        //Getters ande Setters

}


@Entity
@Table(name = "phone")
public class Phone{

    @Id
    @GeneratedValue
    @Column(name = "phone_id")
    private long phone_id;


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

         @ManyToOne(cascade = CascadeType.MERGE,fetch = FetchType.EAGER)
    @JoinColumn(name = "person_id")
    private Person person ;

        //Getters ande Setters


}

What I want is when I fetch a record from person and need corresponding all phone details. (Like Select * from person) I have around 1360 data in person and nearly double in phone. But for some reason error is thrown. I am not able to see full error stack . Below is the error I am getting.

at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:505) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:639) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:505) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:639) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:117) ~[jackson-databind-2.4.6.jar:2.4.6] at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:23) ~[jackson-databind-2.4.6.jar:2.4.6] at .....

I was not able to post all error that I got

user_7168430 · Answer

I was also getting the same error. Using @JsonBackReference and @JsonManagedReference was still giving me error so I used @JsonIdentityInfo and it worked like a charm.

Below are my classes :-

BookModel :

@Data
@Entity
@Table(name = "book")
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="bookId")
public class BookModel implements Serializable{

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

    
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "book_id")
    private int bookId;
    
    
    @Column(name="book_name")
    private String bookName;
    
    @Column(name="book_author")
    private String bookAuthor;
    
    @Column(name="book_publish_date")
    private Date bookPublishDate;
    
    @Column(name="book_price")
    private double bookPrice;
    
    @OneToMany(mappedBy = "book_model")
    List  bookImagesModels;
    //getters and setters
    //default constructor

}

BookImagesModel :

@Data
@Entity
@Table(name = "book_images")
@JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property="imageId")
public class BookImagesModel implements Serializable {

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

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "image_id")
    private long imageId;

    @ManyToOne
    @JoinColumn(name = "book_id")
    private BookModel book_model;

    
    @Column(name = "image_path")
    private String imagePath;

//getters and setters
        //default constructor

}

I used Mysql8 database with spring boot.

StackOverflow Exception while using Hibernate and Jackson on bi-directional objects

3 Answers