java - Spring Boot Hibernate 中的 H2 DB 不生成 Db Schema

Question

我希望我的 Spring 应用程序自动生成数据库模式和表...我已阅读有关该主题的一些问答，并将我的数据库 URL 设置为:

H2DataSource.setUrl("jdbc:h2:mem:tmp.db;INIT=CREATE SCHEMA IF NOT EXISTS GPSTRACKER");

并且我已经像这样注释了我的实体:

@Entity
@Table(name="tblGps", schema= "GPSTRACKER")

但数据库架构仍未创建。

这是我的日志输出。 Hibernate 正在尝试创建表，但找不到架构!

我做错了什么？有什么建议吗？

日志输出

2015-04-20 22:29:38.211  INFO 7056 --- [ost-startStop-1] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [
    name: default
    ...]
2015-04-20 22:29:38.356  INFO 7056 --- [ost-startStop-1] org.hibernate.Version                    : HHH000412: Hibernate Core {4.3.8.Final}
2015-04-20 22:29:38.360  INFO 7056 --- [ost-startStop-1] org.hibernate.cfg.Environment            : HHH000206: hibernate.properties not found
2015-04-20 22:29:38.362  INFO 7056 --- [ost-startStop-1] org.hibernate.cfg.Environment            : HHH000021: Bytecode provider name : javassist
2015-04-20 22:29:38.745  INFO 7056 --- [ost-startStop-1] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2015-04-20 22:29:38.899  INFO 7056 --- [ost-startStop-1] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect
2015-04-20 22:29:39.202  INFO 7056 --- [ost-startStop-1] o.h.h.i.ast.ASTQueryTranslatorFactory    : HHH000397: Using ASTQueryTranslatorFactory
2015-04-20 22:29:39.795  INFO 7056 --- [ost-startStop-1] org.hibernate.tool.hbm2ddl.SchemaExport  : HHH000227: Running hbm2ddl schema export
2015-04-20 22:29:39.801 ERROR 7056 --- [ost-startStop-1] org.hibernate.tool.hbm2ddl.SchemaExport  : HHH000389: Unsuccessful: drop table GPSTRACKER.tbl_gps if exists
2015-04-20 22:29:39.801 ERROR 7056 --- [ost-startStop-1] org.hibernate.tool.hbm2ddl.SchemaExport  : Schema "GPSTRACKER" nicht gefunden
Schema "GPSTRACKER" not found; SQL statement:
drop table GPSTRACKER.tbl_gps if exists [90079-185] 

实体管理器工厂

@Bean
    public EntityManagerFactory entityManagerFactory() {

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(true);
        vendorAdapter.setShowSql(true);
        vendorAdapter.setDatabasePlatform(MyAppSettings.getDbPlattform());

        HibernateJpaDialect jpd = new HibernateJpaDialect();
        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();

        factory.setJpaDialect(jpd);
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan(MyAppSettings.packagesToScan);
        factory.setDataSource(MyDataSource());

        return factory.getObject();
    }

数据源

DriverManagerDataSource H2DataSource = new DriverManagerDataSource();
                H2DataSource.setDriverClassName("org.h2.Driver");
                H2DataSource.setUrl("jdbc:h2:mem:tmp.db;INIT=CREATE SCHEMA IF NOT EXISTS GPSTRACKER");

                H2DataSource.setUsername("sa");
                H2DataSource.setPassword("");

@pvgoddijn 我记不清了，我现在找不到代码。但我想是我需要返回 LocalEntityManagerFactory 而不是 EntityManagerFactory... 或类似的东西。祝你好运!也许我可以在接下来的几天找到代码...

Answer 1

创建数据源时，您需要设置 hbm2ddl.auto 属性，以便在启动时创建/更新数据库。

    Properties properties = new Properties();
    properties.put("hibernate.hbm2ddl.auto", "update");
    H2DataSource.setConnectionProperties(properties);

您还可以在 hibernate.cfg.xml 文件中设置该属性

其他可能的值是:验证 |更新 |创建 |创建下降

有关此属性和其他属性的其他信息，请访问:http://docs.jboss.org/hibernate/core/3.3/reference/en/html/session-configuration.html#configuration-optional