Question

使用hibernate我遇到了架构验证问题。错误非常简单，它表示我的代码中预期的列类型和实际找到的列类型不匹配。

除此之外我认为他们确实匹配。在查看类似问题之后我添加了columnDefinition =“int（10）”，但这没有帮助。任何有关进一步研究的帮助或指示都将非常感激。

类定义和变量声明

Traject class

public class Traject implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name="id", columnDefinition="int(10)")
private int id;

@OneToMany (fetch = FetchType.EAGER, mappedBy = "traject")
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE, region = "toets_bij_traject")
@JsonBackReference
@OrderBy("toetsInSerie ASC")
private Set<ToetsBijTraject> toetsenBijTraject;

other vars and methods not shown

ToetsBijTraject类

@Entity
@Table(name = "tt_traject_ref_toets")
@Cache(usage=CacheConcurrencyStrategy.READ_WRITE, region="")
public class ToetsBijTraject implements Serializable, Comparable<ToetsBijTraject> {

@Id
@Column(name = "traject_id")
private Traject traject;

@Id
@Column(name = "toets_id")
private Toets toets;

other vars and methods not shown

表格轨迹

CREATE TABLE `traject` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `naam` varchar(20) NOT NULL,
  `is_actief` tinyint(1) DEFAULT '1',
  PRIMARY KEY (`id`),
  UNIQUE KEY `naam` (`naam`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1;

CREATE TABLE `tt_traject_ref_toets` (
`traject_id` int(10) unsigned NOT NULL,
`toets_id` int(10) unsigned NOT NULL,
PRIMARY KEY (`traject_id`,`toets_id`),
KEY `toets_id` (`toets_id`),
CONSTRAINT `tt_traject_ref_toets_ibfk_1` FOREIGN KEY (`traject_id`)REFERENCES `traject` (`id`),
CONSTRAINT `tt_traject_ref_toets_ibfk_2` FOREIGN KEY (`toets_id`) 
REFERENCES `ref_toets` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

错误讯息：

Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: wrong column type encountered in column [traject_id] in table [tt_traject_ref_toets]; found [int (Types#INTEGER)], but expecting [tinyblob (Types#VARBINARY)]
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateColumnType(SchemaValidatorImpl.java:105)
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:92)
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:50)
at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:91)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:484)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:802)
... 87 more

Answer 1

不明白为什么你需要为int类型显式columnDefinition="int(10)"。我的建议是删除它，让Hibernate通过设置hibernate.hbm2ddl.auto=create或update来生成表格。

另请参阅：https://docs.jboss.org/hibernate/orm/5.0/manual/en-US/html/ch03.html

Answer 2

Hibernate不是在抱怨Traject而是关于tt_traject_ref_toets

wrong column type encountered in column [traject_id] in table [tt_traject_ref_toets]

这是一个映射错误：

ToetsBijTraject正在映射一个关联表。您可以使用@ManyToMany映射（仅在您只有id列的情况下）或者您必须将映射更改为此

@Entity
@Table(name = "tt_traject_ref_toets")
@Cache(usage=CacheConcurrencyStrategy.READ_WRITE, region="")
public class ToetsBijTraject implements Serializable, Comparable<ToetsBijTraject> {

@Id
@Column(name = "traject_id")
private int trajectId;

@Id
@Column(name = "toets_id")
private int toetsId;

@ManyToOne
@MapsId("trajectId")
private Traject traject;

@ManyToOne
@MapsId("toetsId")
private Toets toets;

MapsId告诉hibernate那些是pk / fk，它和声明一样 @JoinColumn（“trajectId”，insertable = false，updatable = false）

你可以在这里找到一些好的解释

https://vladmihalcea.com/the-best-way-to-map-a-many-to-many-association-with-extra-columns-when-using-jpa-and-hibernate/

此外，您不需要columnDefinition

hibernate架构验证错误列但使用普通int

2 个答案: