spring mysql存储json

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
</dependencies>

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=root
spring.jpa.hibernate.ddl-auto=update

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Lob;

@Entity
public class MyEntity {

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

    @Lob
    private String jsonData;

    // Getters and Setters
}

import org.springframework.data.jpa.repository.JpaRepository;

public interface MyEntityRepository extends JpaRepository<MyEntity, Long> {
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class MyService {

    @Autowired
    private MyEntityRepository myEntityRepository;

    public void saveJsonData(String jsonData) {
        MyEntity entity = new MyEntity();
        entity.setJsonData(jsonData);
        myEntityRepository.save(entity);
    }

    public String getJsonData(Long id) {
        MyEntity entity = myEntityRepository.findById(id).orElse(null);
        return entity != null ? entity.getJsonData() : null;
    }
}