Spring Boot Hibernate自动配置与手动注释配置

Question

我有一个Spring Boot Web应用程序，它尝试使用Hibernate访问我的数据库。我还有一个不同的、没有spring boot应用程序，它尝试访问相同的数据库。

我正在使用一个带注释的类配置无Spring Boot应用程序。

由于某些原因，Spring Boots自动配置的作用与注释类配置不同。

如果第一次连接到数据库并使用hibernate ddl创建模式，然后使用另一种配置方式重新连接，则会出现ddl错误，例如枚举列将停止工作。

spring.datasource.url=jdbc:hsqldb:file:databaseFiles/hibData/;hsqldb.write_delay_millis=0
spring.datasource.root=sa
spring.datasource.password=1
spring.datasource.driverClassName=org.hsqldb.jdbcDriver


spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.HSQLDialect
spring.jpa.properties.hibernate.show_sql=true
spring.jpa.properties.hibernate.hbm2ddl.auto=update
spring.jpa.properties.hibernate.jdbc.batch_size=50
spring.jpa.properties.hibernate.order_inserts=true
spring.jpa.properties.hibernate.order_updates=true
spring.jpa.properties.hibernate.jdbc.batch_versioned_data=true

配置类：

import org.apache.commons.dbcp.BasicDataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;

import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
import java.util.Properties;


@Configuration
@EnableTransactionManagement
public class DatabaseHibConfig {

    @Bean
    public DataSource getDataSource(){
            BasicDataSource ds = new BasicDataSource();
            ds.setDriverClassName("org.hsqldb.jdbcDriver");
            ds.setUrl("jdbc:hsqldb:file:databaseFiles/hibData/;hsqldb.write_delay_millis=0");
            ds.setUsername("sa");
            ds.setPassword("1");
            return ds;
    }

    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory, DataSource dataSource){
        JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
        jpaTransactionManager.setDataSource(dataSource);
        jpaTransactionManager.setEntityManagerFactory(entityManagerFactory);
        return jpaTransactionManager;
    }

    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
        LocalContainerEntityManagerFactoryBean entityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        entityManagerFactoryBean.setDataSource(dataSource);
        entityManagerFactoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
        entityManagerFactoryBean.setPackagesToScan("mediabeast.data.hibernate.model");

        Properties jpaProperties = new Properties();

        jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.HSQLDialect");

        jpaProperties.put("hibernate.hbm2ddl.auto","update");

        jpaProperties.put("hibernate.show_sql","true");

        entityManagerFactoryBean.setJpaProperties(jpaProperties);

        return entityManagerFactoryBean;
    }
}

Answer 1

将以下属性添加到这两个配置似乎可以修复导致代码停止工作的错误。

spring.jpa.properties.hibernate.physical_naming_strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.properties.hibernate.implicit_naming_strategy=org.hibernate.boot.model.naming.ImplicitNamingStrategyJpaCompliantImpl

然而，当切换配置时，我仍然会在启动时收到“对象已经存在”的ddl错误。