使用两个数据库创建名称为“ EntityManagerFactory”的应用程序时出错

时间：2019-10-07 17:12:39

标签： postgresql spring-boot

我想在项目中使用两个数据库，所以我已经完成了guide。 并且它工作正常，但是我想使用Spring 2.1.8，而在本指南中使用1.5.3。 但是，当我在pom.xml中更改spring的版本时，它不再起作用。谁能告诉我，为什么它不能在新版本的Spring Boot中使用？

我正在使用两个postgre数据库，而我的app.properties在这里：

# PostgreSQL DB - "foo"
spring.datasource.url=jdbc:postgresql://localhost:5432/newdb?currentSchema=public
spring.datasource.username=postgres
spring.datasource.password=postgres
spring.datasource.driver-class-name=org.postgresql.Driver

# PostgreSQL DB - "bar"
bar.datasource.url=jdbc:postgresql://localhost:5432/secdb?currentSchema=public
bar.datasource.username=postgres
bar.datasource.password=postgres
bar.datasource.driver-class-name=org.postgresql.Driver

pom.xml中的依赖项：

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
            <scope>runtime</scope>
        </dependency>

实体一：

@Entity
@Table(name = "bar")
public class Bar {
  @Id
  @GeneratedValue(strategy = GenerationType.SEQUENCE, generator="bar_id_seq")
  @SequenceGenerator(name="bar_id_seq", sequenceName="bar_id_seq", allocationSize=1)
  @Column(name = "ID")
  private Long id;
  @Column(name = "BAR")
  private String bar;
//
}

实体二：

@Entity
@Table(name = "foo")
public class Foo {
  @Id
  @GeneratedValue(strategy = GenerationType.SEQUENCE, generator="foo_id_seq")
  @SequenceGenerator(name="foo_id_seq", sequenceName="foo_id_seq", allocationSize=1)
  @Column(name = "ID")
  private Long id;
  @Column(name = "FOO")
  private String foo;
//
}

存储库在这里，第二个实体相同。 在这里，如果我们使用spring 2.1.8，我们只能返回“ optional”，但它很容易修复，我想问题不在这里

@Repository
public interface BarRepository extends JpaRepository<Bar, Long> {
  Bar findById(Long id);
}

第一个数据库的配置类（第二个实体的配置类几乎相同）： 在这里，在导入中，如果使用1.5.3，则必须从org.springframework.boot.autoconfigure.jdbc中导入DataSourceBuilder。 ，但如果使用2.1.8，则应为org.springframework.boot.jdbc。 ，这是代码之间的第二个也是最后一个区别

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "barEntityManagerFactory",
    transactionManagerRef = "barTransactionManager", basePackages = {"com.foobar.bar.repo"})
public class BarDbConfig {
  @Bean(name = "barDataSource")
  @ConfigurationProperties(prefix = "bar.datasource")
  public DataSource dataSource() {
    return DataSourceBuilder.create().build();
  }
  @Bean(name = "barEntityManagerFactory")
  public LocalContainerEntityManagerFactoryBean barEntityManagerFactory(
      EntityManagerFactoryBuilder builder, @Qualifier("barDataSource") DataSource dataSource) {
    return builder.dataSource(dataSource).packages("com.foobar.bar.domain").persistenceUnit("bar")
        .build();
  }
  @Bean(name = "barTransactionManager")
  public PlatformTransactionManager barTransactionManager(
      @Qualifier("barEntityManagerFactory") EntityManagerFactory barEntityManagerFactory) {
    return new JpaTransactionManager(barEntityManagerFactory);
  }
}

日志：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'barEntityManagerFactory' defined in class path resource [com/foobar/BarDbConfig.class]: Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1694) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:573) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1087) ~[spring-context-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:857) ~[spring-context-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:548) ~[spring-context-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:307) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1242) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1230) ~[spring-boot-2.0.6.RELEASE.jar:2.0.6.RELEASE]
    at com.foobar.Application.main(Application.java:10) ~[classes/:na]
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:271) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:233) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:51) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:94) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:242) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:210) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.handleTypes(MetadataBuildingProcess.java:352) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:111) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:861) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1753) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1690) ~[spring-beans-5.0.10.RELEASE.jar:5.0.10.RELEASE]
    ... 16 common frames omitted
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:100) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:54) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:88) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:259) ~[hibernate-core-5.2.17.Final.jar:5.2.17.Final]
    ... 33 common frames omitted

任何帮助，谢谢

0 个答案:

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