Hibernate 不使用 JPA 创建 PostgreSQL 模式对象

Question

我有以下代码：

@Configuration
public class HibernateConfig {

    @Autowired
    private DataSourceProperties dataSourceProperties;

    @Autowired
    private JpaProperties jpaProperties;

    @Bean
    JpaVendorAdapter jpaVendorAdapter() {
        return new HibernateJpaVendorAdapter();
    }

    @Bean
    @Scope(
        value = ConfigurableBeanFactory.SCOPE_PROTOTYPE,
        proxyMode = ScopedProxyMode.TARGET_CLASS)
    public JdbcTemplate jdbcTemplate() {
        return new JdbcTemplate(customDataSource(dataSourceProperties));
    }

    @Bean
    public DataSource customDataSource(DataSourceProperties properties) {

        final CustomHikariDataSource dataSource = properties.initializeDataSourceBuilder().type(CustomHikariDataSource.class).build();
        if (properties.getName() != null) {
            dataSource.setPoolName(properties.getName());
        }
        
        return dataSource;
    }

//    @Bean
//    LocalContainerEntityManagerFactoryBean entityManagerFactory(
////        DataSource dataSource,
//        MultiTenantConnectionProvider multiTenantConnectionProviderImpl,
//        CurrentTenantIdentifierResolver currentTenantIdentifierResolverImpl
//    ) {
//
//        Map<String, Object> jpaPropertiesMap = createJpaPropertiesMap(multiTenantConnectionProviderImpl, currentTenantIdentifierResolverImpl);
//
//        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
//
//        factoryBean.setDataSource(customDataSource(dataSourceProperties));
//        factoryBean.setPackagesToScan("com.sample.billing*");
//        factoryBean.setJpaVendorAdapter(this.jpaVendorAdapter());
//        factoryBean.setJpaPropertyMap(jpaPropertiesMap);
//
//        return factoryBean;
//    }


    private Map<String, Object> createJpaPropertiesMap(MultiTenantConnectionProvider multiTenantConnectionProviderImpl,
                                                       CurrentTenantIdentifierResolver currentTenantIdentifierResolverImpl) {
        Map<String, Object> jpaPropertiesMap = new HashMap<>(jpaProperties.getProperties());

        jpaPropertiesMap.put(Environment.MULTI_TENANT, MultiTenancyStrategy.SCHEMA);
        jpaPropertiesMap.put(Environment.MULTI_TENANT_CONNECTION_PROVIDER, multiTenantConnectionProviderImpl);
        jpaPropertiesMap.put(Environment.MULTI_TENANT_IDENTIFIER_RESOLVER, currentTenantIdentifierResolverImpl);

        jpaPropertiesMap.put(Environment.FORMAT_SQL, true);
        jpaPropertiesMap.put(Environment.SHOW_SQL, true);

        return jpaPropertiesMap;
    }
}


public class CustomHikariDataSource extends HikariDataSource {

    @Override
    public Connection getConnection() throws SQLException {

        Connection connection = super.getConnection();
        connection.setSchema("public");
        return connection;
    }
}

该项目运行良好，但我想根据客户端选择架构。 然后，我取消注释前面提供的第一个类中的 bean：

@Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory(
//        DataSource dataSource,
        MultiTenantConnectionProvider multiTenantConnectionProviderImpl,
        CurrentTenantIdentifierResolver currentTenantIdentifierResolverImpl
    ) {

        Map<String, Object> jpaPropertiesMap = createJpaPropertiesMap(multiTenantConnectionProviderImpl, currentTenantIdentifierResolverImpl);

        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();

        factoryBean.setDataSource(customDataSource(dataSourceProperties));
        factoryBean.setPackagesToScan("com.sample.billing*");
        factoryBean.setJpaVendorAdapter(this.jpaVendorAdapter());
        factoryBean.setJpaPropertyMap(jpaPropertiesMap);

        return factoryBean;
    }

在取消注释 bean 的情况下，我得到了提供的错误：

2020-11-24 18:03:24.602 ERROR 31729 --- [   scheduling-1] o.h.engine.jdbc.spi.SqlExceptionHelper   : ERROR: relation "account" does not exist
  Position: 515
2020-11-24 18:03:24.603  INFO 31729 --- [   scheduling-1] c.m.b.m.c.d.TenantConnectionProvider     : Release connection for tenant public
2020-11-24 18:03:24.608 ERROR 31729 --- [   scheduling-1] o.s.s.s.TaskUtils$LoggingErrorHandler    : Unexpected error occurred in scheduled task

org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259) ~[spring-orm-5.3.1.jar:5.3.1]
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233) ~[spring-orm-5.3.1.jar:5.3.1]

出现SQLGrammarException错误是因为模式中的表没有被创建，但表确实在没有这个 bean 的情况下创建。

这里有什么问题，我该如何解决？

Answer 1

ohengine.jdbc.spi.SqlExceptionHelper：错误：关系“帐户”不存在，您的表帐户不存在。

我不知道如何在您的逻辑中创建表，但通常当我使用 Hibernate 时，我使用 hibernate.hbm2ddl.auto 可能的选项：validate | 更新 | 创建 | 创建删除

也许尝试为这个数据源创建它会解决这个问题？

https://docs.spring.io/spring-boot/docs/1.1.0.M1/reference/html/howto-database-initialization.html