Java 在Spring容器中为jpa在xml中查找id生成器

实体使用表id生成器策略：

@Id
@TableGenerator(name = "id_gen",
        table = "id_gen",
        pkColumnName = "gen_name",
        valueColumnName = "gen_val",
        pkColumnValue = "shared_id_generator", /*same as generator name by default*/
        initialValue = 10, /*0 by default*/
        allocationSize = 100 /*50 by default*/)
@GeneratedValue(strategy = GenerationType.TABLE, generator = "id_gen")
private long id;

所有实体都使用相同的策略和相同的生成器，所以我将表生成器defentition移动到jpa映射xml文件中。maven项目中的位置：

main/resources/db/jpa/orm.xml

生成器现在在jpa映射xml文件中定义为：

<table-generator name="id_shared_generator"
                 table="id_gen"
                 pk-column-name="gen_name"
                 pk-column-value="shared_id_value"
                 value-column-name="gen_val"
                 initial-value="10"
                 allocation-size="100" />

我根本不使用persistence.xml文件，而是配置entityManagerFactory：

    @Bean
    @DependsOn("liquibase")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
        LocalContainerEntityManagerFactoryBean emfb = new LocalContainerEntityManagerFactoryBean();
        emfb.setDataSource(dataSource);
//        emfb.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
        emfb.setPackagesToScan(new String[]{"com.savdev.springmvcexample.domain"});
        emfb.setMappingResources("db/jpa/orm.xml");
        emfb.setJpaVendorAdapter(jpaVendorAdapter());
        emfb.setJpaProperties( new Properties(){{
            put("hibernate.hbm2ddl.auto", "validate");
            put("hibernate.format_sql", "true");
            put("hibernate.show_sql", "true");
        }});
        emfb.setPersistenceUnitName("springmvcexample");
        return emfb;
    }

现在，我在尝试加载spring应用程序上下文时遇到以下异常：

原因：org.springframework.beans.factory.BeanCreationException: 创建类中定义的名为“entityManagerFactory”的bean时出错 路径资源[spring/repository config.xml]：初始化的调用 方法失败；嵌套异常是 javax.persistence.PersistenceException:[PersistenceUnit:default] 无法生成EntityManagerFactory。。。原因： org.hibernate.AnnotationException:未知Id.generator: id\u共享\u生成器

请告诉我，我做错了什么？

---

是否允许通过

emfb.setMappingResources（“db/jpa/orm.xml”）设置额外的jpa映射xml文件调用？
您确定映射文件位置正确吗
main/resources/jpa/orm.xml
vs
db/jpa/orm.xml
？main/resources/db/jpa/orm.xml-文件夹中的位置。但是资源文件夹在类路径中，所以我只传递“db/jpa/orm.xml”字符串
    @Bean
    @DependsOn("liquibase")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource) {
        LocalContainerEntityManagerFactoryBean emfb = new LocalContainerEntityManagerFactoryBean();
        emfb.setDataSource(dataSource);
//        emfb.setPersistenceXmlLocation("classpath:META-INF/persistence.xml");
        emfb.setPackagesToScan(new String[]{"com.savdev.springmvcexample.domain"});
        emfb.setMappingResources("db/jpa/orm.xml");
        emfb.setJpaVendorAdapter(jpaVendorAdapter());
        emfb.setJpaProperties( new Properties(){{
            put("hibernate.hbm2ddl.auto", "validate");
            put("hibernate.format_sql", "true");
            put("hibernate.show_sql", "true");
        }});
        emfb.setPersistenceUnitName("springmvcexample");
        return emfb;
    }