阿咚的多数据实现是使用配置类，以及yml文件的方式，ORM使用mybatis 话不多说直接上代码。

数据源1配置类

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import tk.mybatis.spring.annotation.MapperScan;
数据源1@Configuration@MapperScan(basePackages = "com.**.mapper.aDong1",sqlSessionFactoryRef = "aDong1SqlSessionFactory")public class aDong1DataSourceConfig {@Primary //默认数据源@Bean("DaibaiDataSource")@ConfigurationProperties(prefix = "spring.datasource.dynamic.aDong1") //yml配置文件public DataSource getaDong1DataSource(){return DataSourceBuilder.*create*().build();}@Primary@Bean("aDong1SqlSessionFactory")public SqlSessionFactory aDong1SqlSessionFactory(@Qualifier("DaibaiDataSource") DataSource dataSource) throws Exception {SqlSessionFactoryBean bean = new SqlSessionFactoryBean();bean.setDataSource(dataSource);// mapper的xml形式文件位置必须要配置，不然将报错：no statement （这种错误也可能是mapper的xml中，namespace与项目的路径不一致导致）bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:com/mapper/aDong1/**/*.xml"));return bean.getObject();}@Primary@Bean("aDong1SqlSessionTemplate")public SqlSessionTemplate db1SqlSessionTemplate(@Qualifier("aDong1SqlSessionFactory") SqlSessionFactory sqlSessionFactory){return new SqlSessionTemplate(sqlSessionFactory);}}

数据源2

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import tk.mybatis.spring.annotation.MapperScan; 
//数据源2@Configuration@MapperScan(basePackages = "com.*.mapper.sso",sqlSessionFactoryRef = "ssoSqlSessionFactory")public class aDong2SourceConfig {@Primary //默认数据源@Bean("aDong2Source")@ConfigurationProperties(prefix = "spring.datasource.dynamic.sso") //yml配置文件public DataSource getaDong1DataSource(){return DataSourceBuilder.*create*().build();}@Primary@Bean("aDong2SqlSessionFactory")public SqlSessionFactory aDong2SqlSessionFactory(@Qualifier("aDong2Source") DataSource dataSource) throws Exception {SqlSessionFactoryBean bean = new SqlSessionFactoryBean();bean.setDataSource(dataSource);// mapper的xml形式文件位置必须要配置，不然将报错：no statement （这种错误也可能是mapper的xml中，namespace与项目的路径不一致导致）bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:com/mapper/aDong2/**/*.xml"));return bean.getObject();}@Bean("aDong2SqlSessionTemplate")public SqlSessionTemplate db1SqlSessionTemplate(@Qualifier("aDong2SqlSessionFactory") SqlSessionFactory sqlSessionFactory){return new SqlSessionTemplate(sqlSessionFactory);}}

yml文件配置： 根据自己情况填上 信息

datasource:dynamic:primary: dabai *#**设置默认数据源
\*   dabai:jdbc-url: driver-class-name: com.mysql.cj.jdbc.Driverusername: password: sso:jdbc-url: driver-class-name: com.mysql.cj.jdbc.Driverusername: password: 

使用的时候跟单数据源一样，只要直接使用对应表的mapper就直接可以。