Question

我目前在Spring环境中使用Hibernate，但我遇到了一些问题。

事实上，我有3个实体：

批评（身份证，描述）
Gravite（id，description）
出现（id，description）

我正在努力的是创建第四个表，其中包含其他三个外键，如Crit_Grav_Occ（idC，idG，idO）

Criticite

@Entity
@Table(name = "criticite")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
@Document(indexName = "criticite")
public class Criticite implements Serializable {

    private static final long serialVersionUID = 1L;

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

    @Column(name = "criticite")
    private Integer criticite;

    @ManyToMany
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    @JoinTable(name = "criticite_gravite_occurrence",
               joinColumns = @JoinColumn(name="criticites_id", referencedColumnName="id"),
               inverseJoinColumns = @JoinColumn(name="occurrences_id", referencedColumnName="id"))
    private Set<Occurrence> occurrences = new HashSet<>();

    @ManyToMany
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    @JoinTable(name = "criticite_gravite_occurrence",
               joinColumns = @JoinColumn(name="criticites_id", referencedColumnName="id"),
               inverseJoinColumns = @JoinColumn(name="gravites_id", referencedColumnName="id"))
    private Set<Gravite> gravites = new HashSet<>();

Gravite

@Entity
@Table(name = "gravite")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
@Document(indexName = "gravite")
public class Gravite implements Serializable {

    private static final long serialVersionUID = 1L;

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

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

    @ManyToMany(mappedBy = "gravites", cascade = {CascadeType.ALL})
    @JsonIgnore
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    private Set<Criticite> criticites = new HashSet<>();

发生

@Entity
@Table(name = "occurrence")
@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
@Document(indexName = "occurrence")
public class Occurrence implements Serializable {

    private static final long serialVersionUID = 1L;

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

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

    @ManyToMany(mappedBy = "occurrences", cascade = {CascadeType.ALL})
    @JsonIgnore
    @Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
    private Set<Criticite> criticites = new HashSet<>();

现在......当我想使用CrudRepository中的save保存批评时，我得到了

引起：java.sql.SQLException：字段'occurrences_id'没有默认值

上面奇怪的是：

Hibernate：插入critite_gravite_occurrence（critites_id， gravites_id）值（？，？）

虽然我应该期待这个

Hibernate：插入critite_gravite_occurrence（critites_id， gravites_id，occurences_id）值（？，？，？）

欢迎任何帮助：）

Hibernate问题：字段“...”没有默认值

0 个答案: