Java 设置方法出现 SpringBootTest EntityNotFoundException

Question

有一个class用于测试保存一些约束，有方法setup带有@Before注解，其中测试数据保存在数据库中：

.. 而在运行这个方法中测试时，在保存Entity到存储库时出现EntityNotFoundException错误：

    
    . . .

    @Autowired
    EntityFeatureConfigRepository entityFeatureConfigRepository;

    @Autowired
    FeatureRepository featureRepository;

    @Autowired
    EntityRepository entityRepository;

    @Before
    public void setup() {
        entityRepository.deleteAll();
        featureRepository.deleteAll();
        entityFeatureConfigRepository.deleteAll();
        
        featureRepository.save(new Feature(1);                    <==== 1L - id 
        entityRepository.save(new Entity(1));
        entityFeatureConfigRepository.save(new EntityFeatureConfig( <=EXCEPTION
                new Feature(1),          
                new Entity(1),
                true));
    }
    . . .

Unable to find Entity with id 1; nested exception is javax.persistence.EntityNotFoundException: Unable to find Entity with id 1

错误是Entity不存在，虽然保存在setup方法

如果classEntityFeatureConfig里面有这样的字段，可能问题出在

    @Id
    @ManyToOne
    @ToString.Exclude
    @JsonIgnore
    @JoinColumn(name = "feature_id", referencedColumnName = "id")
    private Feature feature;

    @Id
    @ManyToOne
    @ToString.Exclude
    @JoinColumn(name = "entity_id", referencedColumnName = "id")
    private Entity entity;

和Entity

    @OneToMany(fetch = FetchType.EAGER, mappedBy = "entity")
    @EqualsAndHashCode.Exclude
    @JsonIgnore
    private Set<UserManagingEntity> user;

这个错误可能与什么有关， 数据不在存储库中？

Answer 1

尝试使用从保存方法返回的对象而不是创建新对象

Feature f = featureRepository.save(new Feature(1);                 
Entity e = entityRepository.save(new Entity(1));