Java 将MySQL json列映射到JPA会引发错误

我想将MySQL JSON列映射到JPA。我做了一些研究，用了

@Type( type = "json" )
@Column( columnDefinition = "json" )

但这带来了一个例外

Exception in thread "main" org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [json]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:348)
    at org.hibernate.boot.internal.ClassLoaderAccessImpl.classForName(ClassLoaderAccessImpl.java:62)
    at org.hibernate.cfg.annotations.SimpleValueBinder.fillSimpleValue(SimpleValueBinder.java:538)
    at org.hibernate.cfg.SetSimpleValueTypeSecondPass.doSecondPass(SetSimpleValueTypeSecondPass.java:25)
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1621)
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1579)
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:278)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:858)
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:885)
    at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:58)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:55)
    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:39)
    at com.savemonk.ce.utility.hibernateAndJPA.JPAUtility.getEntityManagerFactory(JPAUtility.java:12)
    at com.savemonk.ce.v2.pricegraph.manager.AddNewPriceTrackRecord.addNewPriceTrackRecordTest(AddNewPriceTrackRecord.java:29)
    at com.savemonk.ce.v2.pricegraph.manager.AddNewPriceTrackRecord.main(AddNewPriceTrackRecord.java:23)
Caused by: java.lang.ClassNotFoundException: Could not load requested class : json
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl$AggregatedClassLoader.findClass(ClassLoaderServiceImpl.java:336)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:348)
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:345)
    ... 14 more

我知道@Type是hibernate的org.hibernate.annotations.Type 在JPA中映射列的正确方法是什么

如果需要，我可以发布实体类。

---

任何解释JPA+JSON类型列的链接和资源都会非常有用。

Hibernate ORM中没有

JSON

类型。您可以使用提供JSON支持的

要添加对

json

的支持，请向实体添加以下

@TypeDef

注释：

@TypeDef(name = "json", typeClass = JsonStringType.class)

您还需要添加以下Maven依赖项：

<dependency>
    <groupId>com.vladmihalcea</groupId>
    <artifactId>hibernate-types-52</artifactId>
    <version>${hibernate-types.version}</version>
</dependency>

Vladmichalcea网站
要了解如何在MySQL中使用
JsonStringType
。
除了依赖项之外，还需要添加

@TypeDef（name=“json”，typeClass=JsonStringType.class）

到您的一个实体类声明