Я использую Jhipster и Lombok для моего Java Project.
Я удалил объект Entity equals () и hashcode (), сгенерированный Jhipster и заменен Lombok @equalsandhashcode
, первоначально генерируемый Jhipsster .@Entity
@Table(name = "category")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
public class Category implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Size(max = 100)
@Column(name = "name", length = 100)
private String name;
// jhipster-needle-entity-add-field - JHipster will add fields here
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public Category name(String name) {
this.name = name;
return this;
}
public void setName(String name) {
this.name = name;
}
// jhipster-needle-entity-add-getters-setters - JHipster will add getters and setters here
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof Category)) {
return false;
}
return id != null && id.equals(((Category) o).id);
}
@Override
public int hashCode() {
return 31;
}
// prettier-ignore
@Override
public String toString() {
return "Category{" +
"id=" + getId() +
", name='" + getName() + "'" +
"}";
}
}
изменен для использования Lombok
@Entity
@Data
@EqualsAndHashCode(callSuper = true)
@Table(name = "category")
public class Category extends AbstractAuditingEntity implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
@Size(max = 100)
@Column(name = "name", length = 100)
private String name;
}
< /code>
Проблема - это тест, сгенерированный Jhipster ниже. На последних 2 строках теста < /p>
/**
* Verifies the equals/hashcode contract on the domain object.
*/
public static void equalsVerifier(Class clazz) throws Exception {
T domainObject1 = clazz.getConstructor().newInstance();
assertThat(domainObject1.toString()).isNotNull();
assertThat(domainObject1).isEqualTo(domainObject1);
assertThat(domainObject1.hashCode()).isEqualTo(domainObject1.hashCode());
// Test with an instance of another class
Object testOtherObject = new Object();
assertThat(domainObject1).isNotEqualTo(testOtherObject);
assertThat(domainObject1).isNotEqualTo(null);
// Test with an instance of the same class
T domainObject2 = clazz.getConstructor().newInstance();
assertThat(domainObject1).isNotEqualTo(domainObject2); //this fails
// HashCodes are equals because the objects are not persisted yet
assertThat(domainObject1.hashCode()).isEqualTo(domainObject2.hashCode()); //this also fails
}
Могу ли я узнать, какова цель теста? Содержание объекта одинаково. Почему бы и нет? Если да, то почему Lombok @EqualsAndhashCode дает различный хэшкод? < /P>
Как я могу решить проблему?
@MappedSuperclass
@EntityListeners(AuditingEntityListener.class)
public abstract class AbstractAuditingEntity implements Serializable {
private static final long serialVersionUID = 1L;
@CreatedBy
@Column(name = "created_by", nullable = false, length = 50, updatable = false)
@JsonIgnore
private String createdBy;
@CreatedDate
@Column(name = "created_date", updatable = false)
@JsonIgnore
private Instant createdDate = Instant.now();
@LastModifiedBy
@Column(name = "last_modified_by", length = 50)
@JsonIgnore
private String lastModifiedBy;
@LastModifiedDate
@Column(name = "last_modified_date")
@JsonIgnore
private Instant lastModifiedDate = Instant.now();
public String getCreatedBy() {
return createdBy;
}
public void setCreatedBy(String createdBy) {
this.createdBy = createdBy;
}
public Instant getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Instant createdDate) {
this.createdDate = createdDate;
}
public String getLastModifiedBy() {
return lastModifiedBy;
}
public void setLastModifiedBy(String lastModifiedBy) {
this.lastModifiedBy = lastModifiedBy;
}
public Instant getLastModifiedDate() {
return lastModifiedDate;
}
public void setLastModifiedDate(Instant lastModifiedDate) {
this.lastModifiedDate = lastModifiedDate;
}
}
Подробнее здесь: https://stackoverflow.com/questions/636 ... lsverifier
