springboot 多数据源的实现

相关的依赖

yml配置

java配置类：

DataSourceConfigurerjava

/**
 * Created by zhiqi.shao on 2017/11/20.
 */
@Configuration
public class DataSourceConfigurer {

    @Bean
    @ConfigurationProperties("datasource.order")
    public DataSourceProperties orderDataSourceProperties() {
        return new DataSourceProperties();
    }

    @Bean
    @ConfigurationProperties("datasource.order")
    public DataSource orderDataSource() {
        return orderDataSourceProperties().initializeDataSourceBuilder().build();
    }

    @Bean
    @Primary
    @ConfigurationProperties("datasource.order-query")
    public DataSourceProperties orderQueryDataSourceProperties() {
        return new DataSourceProperties();
    }

    @Bean
    @Primary
    @ConfigurationProperties("datasource.order-query")
    public DataSource orderQueryDataSource() {
        return orderQueryDataSourceProperties().initializeDataSourceBuilder().build();
    }

}

OrderDataSourceConfigurer.java

/**
 * Created by zhiqi.shao on 2017/11/20.
 */
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryOrder",
        transactionManagerRef = "transactionManagerOrder",
        basePackages = {"com.hpe.ordersynchro.ordersEntity"}
)
public class OrderDataSourceConfigurer {

    @Autowired
    @Qualifier("orderDataSource")
    private DataSource orderDataSource;

    @Bean(name = "entityManagerOrder")
    public EntityManager entityManager(EntityManagerFactoryBuilder builder){
          return entityManagerFactoryOrder(builder).getObject().createEntityManager();
    }

    @Bean(name= "entityManagerFactoryOrder")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryOrder(EntityManagerFactoryBuilder builder){
        return builder
                .dataSource(orderDataSource)
                .properties(getVendorProperties(orderDataSource))
                .packages(new String[]{"com.hpe.ordersynchro.ordersEntity"})
                .persistenceUnit("orderPersistenceUnit")
                .build();

    }

    @Autowired
    private JpaProperties jpaProperties;

    private Map<String,String> getVendorProperties(DataSource dataSource){
        return jpaProperties.getHibernateProperties(dataSource);
    }

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

OrderQueryDataSourceConfigurer.java

/**
 * Created by zhiqi.shao on 2017/11/20.
 */
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(
        entityManagerFactoryRef = "entityManagerFactoryOrderQuery",
        transactionManagerRef = "transactionManagerOrderQuery",
        basePackages = {"com.hpe.ordersynchro.ordersQueryEntity"}
)
public class OrderQueryDataSourceConfigurer {

    @Autowired
    @Qualifier("orderQueryDataSource")
    private DataSource orderQueryDataSource;

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

    @Primary
    @Bean(name= "entityManagerFactoryOrderQuery")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryOrderQuery(EntityManagerFactoryBuilder builder){
        return builder
                .dataSource(orderQueryDataSource)
                .properties(getVendorProperties(orderQueryDataSource))
                .packages(new String[]{"com.hpe.ordersynchro.ordersQueryEntity"})
                .persistenceUnit("orderQueryPersistenceUnit")
                .build();

    }

    @Autowired
    private JpaProperties jpaProperties;

    private Map<String,String> getVendorProperties(DataSource dataSource){
        return jpaProperties.getHibernateProperties(dataSource);
    }

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

}

注解：加了@primary就是默认数据源

分别是jpa和jpa对应实体的位置，我这里还是将它们放在了一个包下，所以上面配置的扫描路劲相同：