java – 应该在spring boot中定义Entity模型类

2023年3月31日 353次阅读

我戴了一个基于
java的应用程序并使用了
Spring Boot

这是模型：

@Entity
@Table(name = "task_list")
public class Task implements Serializable

这是Spring启动使用它启动的Config类：

@Configuration
@EnableAutoConfiguration
@EnableJpaRepositories
@EnableTransactionManagement
@ComponentScan(basePackages = {"controller", "dao", "service"})
class Config {


    @Bean(name = "dataSource")
    public DataSource dataSource() {
        EmbeddedDatabaseBuilder builder = new EmbeddedDatabaseBuilder();
        return builder.setType(EmbeddedDatabaseType.HSQL).build();
    }

    @Bean(name = "entityManager")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setDatabase(Database.HSQL);
        vendorAdapter.setGenerateDdl(true);

        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan(getClass().getPackage().getName());
        factory.setDataSource(dataSource());

        return factory;
    }

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

这是应用程序：

@SpringBootApplication()
public class Application {

    public static void main(String[] args) {

        SpringApplication.run(Config.class);

    }
}

因此,当我运行应用程序时,它可以工作并创建所有bean但是
当我想与数据库交互时,Hibernate得到了这个错误

org.hibernate.MappingException: Unknown entity: model.Task

我认为这是因为没有任何persistence.xml要映射
模特班,

那么我应该在Spring启动应用程序中做什么？
应该把那个xml放在哪里？
是否有任何Annotation告诉spring boot来映射模型类？

提前致谢 .

最佳答案 感谢Xtreme Biker,我解决了这个问题

我只是在LocalContainerEntityManagerFactoryBean中添加模型包.

@Bean(name = "entityManager")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setDatabase(Database.HSQL);
        vendorAdapter.setGenerateDdl(true);

        LocalContainerEntityManagerFactoryBean factory = new     LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan("model");
        factory.setDataSource(dataSource());

        return factory;
    }
点赞