Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [com.vladmihalcea.hibernate.type.json.JsonBinaryType]

[vinodhvp]

I have an existing project which builds , runs and deploys well.
But when I add jsonb/JsonBinaryType into my entity class, it starts throwing errors during build.
The error is thrown while running junit test cases.

1. My Entity class:
   import com.vladmihalcea.hibernate.type.json.JsonBinaryType;
   @typedef(name = "jsonb", typeClass = JsonBinaryType.class)
   public class MyEntity implements Serializable {
   @column(name = "payload", columnDefinition = "jsonb")
   @type(type = "jsonb")
   private String payload;
   }

2. My dialect class:
   import org.hibernate.dialect.PostgreSQL94Dialect;
   public class JsonPostgreSQL94Dialect extends PostgreSQL94Dialect {
   public JsonPostgreSQL94Dialect() {
   this.registerColumnType(Types.JAVA_OBJECT, "jsonb");
   }
   }

3. My maven dependencies:
   com.h2database:h2:jar:1.4.194:test
   com.vladmihalcea:hibernate-types-52:jar:2.9.3:compile
   org.hibernate:hibernate-core:jar:5.4.11.Final:compile
   org.springframework.boot:spring-boot-starter-data-jpa:jar:2.5.15:compile
   org.jacoco:org.jacoco.agent:jar:runtime:0.8.11:test
   org.springframework.boot:spring-boot-starter-test:jar:2.5.15:test

4. My property class entry:
   spring.jpa.properties.hibernate.dialect=com.******.JsonPostgreSQL94Dialect #My custom class
   spring.jpa.database-platform=org.hibernate.dialect.PostgreSQL9Dialect

[vladmihalcea]

As explained in the README file, the Hibernate Types project was migrated to Hypersistence Utils. However, support for the 52 module was dropped and will no longer be maintained.

In your case, the problem is most likely caused by the ClassLoader. Make sure the dependency is available at runtime as well, not only at compile time.