java - Spring实体管理器无法启动: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

Question

作为开发人员我想开发一个 Spring JPA 来访问 Oracle 9i 数据库以通过存储过程获取记录我想通过 application.yml 连接到数据库，但我使用配置文件 application.properties 启动项目

我在 application.properties 中声明了这一点

    spring.datasource.driver-class-name=oracle.jdbc.OracleDriver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.hibernate.dialect=org.hibernate.dialect.Oracle9iDialect
spring.jpa.database=default
spring.main.allow-bean-definition-overriding=true 
spring.datasource.driverClassName=oracle.jdbc.OracleDriver
spring.jpa.database-platform=org.hibernate.dialect.Oracle9iDialect

以及 application.yml

 jpa:
    hibernate:
      ddl-auto: none

      naming:
        physical-strategy: org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy
        implicit-strategy: org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy
    properties:
      hibernate:
        proc.param_null_passing: true
        dialect: org.hibernate.dialect.Oracle9iDialect
    show-sql: true 

执行时，会引发以下异常

Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

您能告诉我还有什么其他方法可以修改类或配置文件吗？这是我的配置类代码:

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.boot.orm.jpa.hibernate.SpringImplicitNamingStrategy;
import org.springframework.boot.orm.jpa.hibernate.SpringPhysicalNamingStrategy;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
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
@EnableAutoConfiguration(exclude = {DataSourceAutoConfiguration.class, HibernateJpaAutoConfiguration.class,
        DataSourceTransactionManagerAutoConfiguration.class})
@EnableTransactionManagement
@EnableJpaRepositories(
         entityManagerFactoryRef = "productEntityManagerFactory",
         transactionManagerRef = "productTransactionManager",
        basePackages = {"com.pccw.ruby.repository"})

public class DBConfiguration {

    @Primary
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Primary
    @Bean
    LocalContainerEntityManagerFactoryBean entityManagerFactory() {

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(false);
        vendorAdapter.setShowSql(true);

        LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
        factoryBean.setDataSource(dataSource());
        factoryBean.setJpaVendorAdapter(vendorAdapter);
        factoryBean.setPackagesToScan("com.pccw.ruby.domain");

        Properties jpaProperties = new Properties();
        jpaProperties.put("hibernate.proc.param_null_passing", new Boolean(true));
        jpaProperties.put("hibernate.implicit_naming_strategy", SpringImplicitNamingStrategy.class.getName());
        jpaProperties.put("hibernate.physical_naming_strategy", SpringPhysicalNamingStrategy.class.getName());
        factoryBean.setJpaProperties(jpaProperties);

        return factoryBean;
    }

    @Primary
    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }
}

这是我的 Oracle 数据库版本:

Oracle9i 企业版版本 9.2.0.6.0 - 64 位生产

Answer 1

    Properties jpaProperties = new Properties();
    jpaProperties.put("hibernate.proc.param_null_passing", new Boolean(true));
    jpaProperties.put("hibernate.implicit_naming_strategy", SpringImplicitNamingStrategy.class.getName());
    jpaProperties.put("hibernate.physical_naming_strategy", SpringPhysicalNamingStrategy.class.getName());
    jpaProperties.put("hibernate.dialect", "org.hibernate.dialect.Oracle9iDialect");

尝试在这里设置。