springboot mybatis druid multi data source configuration

Multiple Data Source Configuration

Project structure

Recent project uses multiple data sources, where the record about the specific configuration information.

Currently two databases, and PaaS robot, according to the database, the project is divided into the packet structure shown below, to facilitate the management and maintenance after.

Project Pictures

Project Configuration

The main configuration file application.properties

# Connection pool configuration 
spring.datasource.type = com.alibaba.druid.pool.DruidDataSource 
spring.datasource.driverClassName = com.mysql.jdbc.Driver

#robot库
spring.datasource.robot.url=jdbc:mysql://localhost:3306/robot?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.robot.username=root
spring.datasource.robot.password=
spring.datasource.robot.initialSize=1
spring.datasource.robot.maxActive=20
spring.datasource.robot.minIdle=1
spring.datasource.robot.maxWait=60000
spring.datasource.robot.timeBetweenEvictionRunsMillis=60000
spring.datasource.robot.minEvictableIdleTimeMillis=300000
spring.datasource.robot.validationQuery=select 1
spring.datasource.robot.testWhileIdle=true

#pass库
spring.datasource.paas.url=jdbc:mysql://localhost:3306/paas?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.paas.username=root
spring.datasource.paas.password=
spring.datasource.paas.initialSize=1
spring.datasource.paas.maxActive=20
spring.datasource.paas.minIdle=1
spring.datasource.paas.maxWait=60000
spring.datasource.paas.timeBetweenEvictionRunsMillis=60000
spring.datasource.paas.minEvictableIdleTimeMillis=300000
spring.datasource.paas.validationQuery=select 1
spring.datasource.paas.testWhileIdle=true


#实体类扫描路径
mybatis.type-aliases-package=com.huayunworld.parser.flowChart.model.db
#mybatis配置文件路径
mybatis.config-location=classpath:mybatis-config.xml

数据源robot配置


@MapperScan(basePackages = "com.huayunworld.parser.flowChart.dao.robot", sqlSessionFactoryRef = "robotSqlSessionFactory")
public class  {

    private static final String MAPPER = "classpath:mapping/robot/*.xml";


    @ConfigurationProperties("spring.datasource.robot")
    @Primary
    @Bean(name = "robotDataSource")
    public DruidDataSource robotDataSource() {
        return new DruidDataSource();
    }


    @Bean(name = "robotTransactionManager")
    @Primary
    public DataSourceTransactionManager robotTransactionManager() {
        return new DataSourceTransactionManager(robotDataSource());
    }


    @Bean(name = "robotSqlSessionFactory")
    @Primary
    public SqlSessionFactory masterSqlSessionFactory(@Qualifier("robotDataSource") DataSource dataSource) throws Exception {
        final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER));
        return sessionFactoryBean.getObject();
    }

}

数据源paas配置


@MapperScan(basePackages = "com.huayunworld.parser.flowChart.dao.paas", sqlSessionFactoryRef = "paasSqlSessionFactory")
public class PaasDruidConfig {

    private static final String MAPPER = "classpath:mapping/paas/*.xml";


    @ConfigurationProperties("spring.datasource.paas")
    @Bean(name = "paasDataSource")
    public DruidDataSource paasDataSource() {
        return new DruidDataSource();
    }


    @Bean(name = "paasTransactionManager")
    public DataSourceTransactionManager masterTransactionManager() {
        return new DataSourceTransactionManager(paasDataSource());
    }


    @Bean(name = "paasSqlSessionFactory")
    public SqlSessionFactory masterSqlSessionFactory(@Qualifier("paasDataSource") DataSource dataSource) throws Exception {
        final SqlSessionFactoryBean sessionFactoryBean = new SqlSessionFactoryBean();
        sessionFactoryBean.setDataSource(dataSource);
        sessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources(MAPPER));
        return sessionFactoryBean.getObject();
    }

}

测试

使用时，与之前的mybatis的使用方法一样，直接注入dao层对象即可。spring会根据不同包下的dao，连接不同的数据库。

测试代码：


@RunWith(SpringRunner.class)
@SpringBootTest(classes = RbcParserApplication.class)
@Transactional
public class RbcParserApplicationTests {
	
    @Resource
	private AttrMapper attrMapper;
    
    // paas库
	@Resource
	private CallRecBotMapper callRecBotMapper;


	/ ** 
	 * two database query simultaneously tested 
	 * / @Test public void allDataSourceSelectTest () { 		System.out.println (attrMapper.selectAllData ()); 		System.out.println (callRecBotMapper.selectAllData ()); 	}

Output:

Test code

Test can be seen, the two libraries are connected to success.

Original: Big Box springboot mybatis druid multi data source configuration