mybatis使用多数据源配置

一个项目想要连接两个不同的数据库，通过mybatis的多数据源配置即可实现,配置如下。

主数据源配置如下：

@Configuration
@MapperScan(basePackages = "com.ke.dao.primary", sqlSessionFactoryRef = "primarySqlSessionFactory")
public class PrimaryDataSourceConfig {
    @Bean(name = "primaryDataSource")
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource.primary")
    public DataSource primaryDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "primarySqlSessionFactory")
    public SqlSessionFactory primarySqlSessionFactory(@Qualifier("primaryDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        org.apache.ibatis.session.Configuration cfg = new org.apache.ibatis.session.Configuration();
        cfg.setMapUnderscoreToCamelCase(true);
        factoryBean.setConfiguration(cfg);
        factoryBean.setDataSource(dataSource);
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        factoryBean.setMapperLocations(resolver.getResources("classpath*:mapper/primary/**.xml"));
        return factoryBean.getObject();
    }

    @Bean(name = "primarySqlSessionTemplate")
    public SqlSessionTemplate primarySqlSessionTemplate(@Qualifier("primarySqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

　　

工程结构图

 从数据源配置如下：

@Configuration
@MapperScan(basePackages = "com.ke.sinan.dao.secondary", sqlSessionFactoryRef = "secondarySqlSssionFactory")
public class SecondaryDataSourceConfig {
    private static Logger LOGGER = LoggerFactory.getLogger(SecondaryDataSourceConfig.class);
    @Bean(name = "secondaryDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.secondary")
    public DataSource secondaryDataSource() {
        return DataSourceBuilder.create().build();
    }


    @Bean(name = "secondarySqlSssionFactory")
    public SqlSessionFactory secondarySqlSssionFactory(@Qualifier("secondaryDataSource") DataSource dataSource) throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        org.apache.ibatis.session.Configuration cfg = new org.apache.ibatis.session.Configuration();
        cfg.setMapUnderscoreToCamelCase(true);
        factoryBean.setConfiguration(cfg);
        factoryBean.setDataSource(dataSource);
        PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
        factoryBean.setMapperLocations(resolver.getResources("classpath*:mapper/secondary/**.xml"));
        LOGGER.info("SecondaryDataSourceConfig - factoryBean:{}",factoryBean);
        return factoryBean.getObject();
    }

    @Bean(name = "secondSqlSessionTemplate")
    public SqlSessionTemplate secondSqlSessionTemplate(@Qualifier("secondarySqlSssionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
        return new SqlSessionTemplate(sqlSessionFactory);
    }
}

工程结构图

　　

db的yml文件配置

spring:
  datasource:
    primary:
      driver-class-name: com.mysql.jdbc.Driver
      url: xxx
      username: xxx
      password: xxx
      validationQuery: select 1
      testOnBorrow: true
      initialSize: 50
      minIdle: 50
      maxActive: 100
    secondary:
      driver-class-name: com.mysql.jdbc.Driver
      url: xxx
      username: xxx
      password: xxx
      validationQuery: select 1
      testOnBorrow: true
      initialSize: 50
      minIdle: 50
      maxActive: 100

　　

 本人亲用有效，感谢支持！