SpringBoot实现多数据源

基于上次的SpringBoot初识

1.配置文件

spring.datasource.primary.driverClassName=com.mysql.jdbc.Driver
spring.datasource.primary.url=jdbc:mysql://10.10.10.110:3306/dbName?characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true
spring.datasource.primary.username=root
spring.datasource.primary.password=pwd
spring.datasource.primary.test-on-borrow=true
spring.datasource.primary.validation-query=select 1
spring.datasource.primary.test-while-idle=true
spring.datasource.primary.max-idle=20
spring.datasource.primary.max-wait=10000
spring.datasource.primary.min-idle=10
spring.datasource.primary.initial-size=10
spring.datasource.primary.max-active=100

spring.datasource.secondary.driverClassName=org.postgresql.Driver
spring.datasource.secondary.url=jdbc:postgresql://10.10.10.110:5432/dbName
spring.datasource.secondary.username=root
spring.datasource.secondary.password=pwd
spring.datasource.secondary.test-on-borrow=true
spring.datasource.secondary.validation-query=select 1
spring.datasource.secondary.test-while-idle=true
spring.datasource.secondary.max-idle=5
spring.datasource.secondary.max-wait=10000
spring.datasource.secondary.min-idle=1
spring.datasource.secondary.initial-size=5
spring.datasource.secondary.max-active=5

2.数据库配置类

/**
 * 主数据库配置
 * @author
 */
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(enableDefaultTransactions = false, entityManagerFactoryRef = "primaryLocalContainerEntityManagerFactoryBean", transactionManagerRef = "primaryPlatformTransactionManager", basePackages = {"com.navi.loaddata.core.repository.impl"})
public class SpringBootConfiguration5DBPrimary {

	/** 数据源 */
	@Autowired
	@Qualifier("primaryDataSource")
	@Lazy
	private DataSource dataSource;

	/** JPA配置属性 */
	@Autowired
	private JpaProperties jpaProperties;


	/**
	 * 构建主数据源
	 * @return 数据源
	 */
	@Bean(name = "primaryDataSource")
	@Qualifier(value = "primaryDataSource")
	@ConfigurationProperties(prefix = "spring.datasource.primary")
	@Primary
	public DataSource buildPrimaryDataSource() {
		return DataSourceBuilder.create().build();
	}


	/**
	 * 定义实体类管理对象
	 * @param builder 实体类管理对象工厂
	 * @return 实体类管理对象
	 */
	@Primary
	@Bean(name = "primaryEntityManager")
	public EntityManager primaryEntityManager(final EntityManagerFactoryBuilder builder) {
		return primaryLocalContainerEntityManagerFactoryBean(builder).getObject().createEntityManager();
	}


	/**
	 * 配置实体类管理对象工厂
	 * @param builder 实体类管理对象工厂
	 * @return 实体类管理对象工厂
	 */
	@Primary
	@Bean(name = "primaryLocalContainerEntityManagerFactoryBean")
	public LocalContainerEntityManagerFactoryBean primaryLocalContainerEntityManagerFactoryBean(final EntityManagerFactoryBuilder builder) {
		return builder.dataSource(dataSource).properties(jpaProperties.getHibernateProperties(dataSource)).packages("com.navi.**.mysqlEntity").persistenceUnit("primaryPersistenceUnit").build();
	}


	/**
	 * 定义事务管理对象
	 * @param builder 实体类管理对象工厂
	 * @return 事务管理对象
	 */
	@Primary
	@Bean(name = "primaryPlatformTransactionManager")
	public PlatformTransactionManager primaryPlatformTransactionManager(final EntityManagerFactoryBuilder builder) {
		final JpaTransactionManager transactionManager = new JpaTransactionManager(primaryLocalContainerEntityManagerFactoryBean(builder).getObject());
		return transactionManager;
	}

}

3.配置实体类管理类

@Repository("daomes")
public class MesRepositoryImpl extends NaviRepositoryImpl {
    /** 实体类管理类对象 */
    @PersistenceContext(unitName = "mesPersistenceUnit")
    private EntityManager entityManager;


    @Override
    public EntityManager getEntityManager() {
        return entityManager;
    }

//获取事务Session
    public Session getEntityManagerSession() {
        HibernateEntityManager hEntityManager = (HibernateEntityManager)entityManager;
        Session session = hEntityManager.getSession();
        return session;
    }
}

4.使用