


Why Does My Spring Boot Hibernate Application Throw \'org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when \'hibernate.dialect\' not set\'?
org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
When attempting to run a Spring-Boot application that utilizes Hibernate via Spring-JPA, you may encounter the following error:
org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
This error indicates that the Hibernate dialect has not been properly configured. The dialect is responsible for translating database-specific SQL commands.
Solution
To resolve this error, follow these steps:
- Configure Hibernate Properties: In your application.properties or hibernate.cfg.xml file, set the hibernate.dialect property to the appropriate dialect for your database. For example, if you are using PostgreSQL, set it to org.hibernate.dialect.PostgreSQLDialect.
- Use Spring Boot Auto-Configuration: By default, Spring Boot will automatically configure Hibernate based on the settings in your application.properties file. Make sure you have the spring-boot-starter-data-jpa dependency in your project and that you are using Spring Boot versions 1.4 or later.
If you need to access the SessionFactory directly, you can use the following code snippet:
@Bean public HibernateJpaSessionFactoryBean sessionFactory(EntityManagerFactory emf) { HibernateJpaSessionFactoryBean factory = new HibernateJpaSessionFactoryBean(); factory.setEntityManagerFactory(emf); return factory; }
Alternatively, you can obtain a SessionFactory by casting the EntityManagerFactory to it, as of Hibernate 5.
Additional Tips
- Remove the commons-dbcp dependency as Spring Boot uses the more efficient HikariCP implementation.
- Use the @SpringBootApplication annotation instead of @Configuration, @EnableAutoConfiguration, and @ComponentScan in recent Spring Boot versions.
The above is the detailed content of Why Does My Spring Boot Hibernate Application Throw \'org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when \'hibernate.dialect\' not set\'?. For more information, please follow other related articles on the PHP Chinese website!

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