Spring data jpa 配置多数据源

一、数据源配置文件

AlertDbConfig

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryAlert",
        transactionManagerRef = "transactionManagerAlert",
        basePackages = {"com.dianhun.multipledatasources.repository.alert"})
public class AlertDbConfig {
    @Autowired
    @Qualifier("alertDataSource")
    private DataSource alertDataSource;

    @Autowired
    private JpaProperties jpaProperties;

    @Autowired
    private HibernateProperties hibernateProperties;

    @Bean(name = "entityManagerAlert")
    public EntityManager entityManagerAlert(EntityManagerFactoryBuilder builder) {
        return entityManagerFactoryAlert(builder).getObject().createEntityManager();
    }

    @Bean(name = "entityManagerFactoryAlert")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryAlert(EntityManagerFactoryBuilder builder) {
        return builder
                .dataSource(alertDataSource)
                .packages("com.dianhun.multipledatasources.model.alert")
                .persistenceUnit("alertPersistenceUnit")
                .properties(getVendorProperties())
                .build();
    }

    private Map<String, Object> getVendorProperties() {
        return hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(), new HibernateSettings());
    }

    @Bean(name = "transactionManagerAlert")
    public PlatformTransactionManager transactionManagerAlert(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryAlert(builder).getObject());
    }
}

AppDbConfig

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryApp",
        transactionManagerRef = "transactionManagerApp",
        basePackages = {"com.dianhun.multipledatasources.repository.app"})
public class AppDbConfig {
    @Autowired
    @Qualifier("appDataSource")
    private DataSource appDataSource;

    @Autowired
    private JpaProperties jpaProperties;

    @Autowired
    private HibernateProperties hibernateProperties;

    @Primary
    @Bean(name = "entityManagerApp")
    public EntityManager entityManager(EntityManagerFactoryBuilder builder) {
        return entityManagerFactoryApp(builder).getObject().createEntityManager();
    }

    @Primary
    @Bean(name = "entityManagerFactoryApp")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryApp(EntityManagerFactoryBuilder builder) {
        return builder
                .dataSource(appDataSource)
                .packages("com.dianhun.multipledatasources.model.app")
                .persistenceUnit("appPersistenceUnit")
                .properties(getVendorProperties())
                .build();
    }

    private Map<String, Object> getVendorProperties() {
        return hibernateProperties.determineHibernateProperties(jpaProperties.getProperties(), new HibernateSettings());
    }

    @Primary
    @Bean(name = "transactionManagerApp")
    public PlatformTransactionManager transactionManagerApp(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryApp(builder).getObject());
    }
}

DataSourceConfig

@Configuration
public class DataSourceConfig {

    @Bean
    @Primary
    @ConfigurationProperties("com.dianhun.sharding.datasource.app")
    public DataSourceProperties appDataSourceProperties() {
        return new DataSourceProperties();
    }

    @Bean
    @Primary
    @ConfigurationProperties("com.dianhun.sharding.datasource.app.configuration")
    public HikariDataSource appDataSource() {
        return appDataSourceProperties().initializeDataSourceBuilder().type(HikariDataSource.class).build();
    }

    @Bean
    @ConfigurationProperties("com.dianhun.sharding.datasource.alert")
    public DataSourceProperties alertDataSourceProperties() {
        return new DataSourceProperties();
    }

    @Bean
    @ConfigurationProperties("com.dianhun.sharding.datasource.alert.configuration")
    public HikariDataSource alertDataSource() {
        return alertDataSourceProperties().initializeDataSourceBuilder().type(HikariDataSource.class).build();
    }
}

二、项目配置文件

spring:
  jpa:
    show-sql: true
com:
  dianhun:
    sharding:
      datasource:
        app:
          url: jdbc:mysql://127.0.0.1:3309/multipledatasources?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2b8&zeroDateTimeBehavior=convertToNull
          username: root
          password: 123456
          driver-class-name: com.mysql.cj.jdbc.Driver
          configuration:
            maximum-pool-size: 30
        alert:
          url: jdbc:mysql://127.0.0.1:3310/multipledatasources?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2b8&zeroDateTimeBehavior=convertToNull
          username: root
          password: 123456
          driver-class-name: com.mysql.cj.jdbc.Driver
          configuration:
            maximum-pool-size: 30
logging:
  level:
    root: INFO

三、实体类和接口文件

AppEntity

@DynamicInsert
@DynamicUpdate
@EqualsAndHashCode()
@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
@Table(name = "app", schema = "multipledatasources", catalog = "")
public class AppEntity {
    @Id
    @Column(name = "id", nullable = false)
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String name;
}


@Repository
public interface AppRepository extends JpaRepository<AppEntity, Integer> {
}

三、测试文件

@RunWith(SpringRunner.class)
@SpringBootTest
public class MultipleDataSourcesApplicationTest {
    @Autowired
    AppRepository repository;
    @Autowired
    AlertRepository alertRepository;

    @Test
    public void testApp() {
        repository.save(new AppEntity(1, "app"));
    }

    @Test
    public void testAlert() {
        alertRepository.save(new AlertEntity(2, "testAlert"));
    }
}

本文地址：https://blog.csdn.net/qq_41291945/article/details/111974732