多数据源配置

package com.wzxl.assess.base.dataSource;

import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.annotation.MapperScan;
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 org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;


/**
 * Author: ljf
 * Date: 2019-12-23 11:58
 **/
@Configuration
@MapperScan(basePackages = "com.wzxl.assess.modules.*.mapper",sqlSessionFactoryRef = "dataSource1SqlSessionFactory")
public class DataSource1Config {


    // 表示这个数据源是默认数据源
    @Primary
    @Bean(name = "dataSource1")
    @ConfigurationProperties(prefix = "spring.datasource.datasource1")
    public DataSource getDateSource1() {
        return DataSourceBuilder.create().build();
    }


    @Bean(name = "dataSource1SqlSessionFactory")
    // @Qualifier表示查找Spring容器中名字为test1DataSource的对象
    public SqlSessionFactory dataSource1SqlSessionFactory(@Qualifier("dataSource1") DataSource datasource)
            throws Exception {
        MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
        bean.setDataSource(datasource);
        bean.setMapperLocations(
                // 设置mybatis的xml所在位置
                new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/*/*.xml"));
        return bean.getObject();
    }

    @Bean(name = "dataSource1TransactionManager")
    public DataSourceTransactionManager dataSourceTransactionManager(@Qualifier("dataSource1") DataSource datasource){
        return new DataSourceTransactionManager(datasource);
    }

//    @Bean("dataSource1SqlSessionTemplate")
//    // 表示这个数据源是默认数据源
//    @Primary
//    public SqlSessionTemplate dataSource1SqlSessionTemplate(
//            @Qualifier("dataSource1SqlSessionFactory") SqlSessionFactory sessionFactory)
//    {
//        return new SqlSessionTemplate(sessionFactory, ExecutorType.BATCH);
//    }


}

---

package com.wzxl.assess.base.dataSource;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean;
import org.apache.ibatis.plugin.Interceptor;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
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.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import javax.sql.DataSource;

/**
 * @author yanxu
 * @version V1.0
 * @Description: TODO
 * @package com.wzxl.bigdata.base.dataSource
 * @date 16/10/2020
 * @classname OpinionDataSource
 */
@Configuration
@MapperScan(basePackages = "com.wzxl.assess.modules.opinion.shyq.mapper",sqlSessionFactoryRef = "publicOpinionDataSourceSqlSessionFactory")
public class OpinionDataSource {

    // 读取application.properties中的配置参数映射成为一个对象
    // prefix表示参数的前缀
    @Bean(name = "publicOpinionDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.opinion")
    public DataSource getQuartzDataSource() {
        return DataSourceBuilder.create().build();
    }


    @Bean
    public SqlSessionFactory publicOpinionDataSourceSqlSessionFactory(@Qualifier("publicOpinionDataSource") DataSource datasource)
            throws Exception {
        MybatisSqlSessionFactoryBean bean = new MybatisSqlSessionFactoryBean();
        bean.setDataSource(datasource);
        bean.setPlugins(new Interceptor[]{paginationInterceptor()});
        bean.setMapperLocations(
                // 设置mybatis的xml所在位置
                new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*/*.xml"));
        return bean.getObject();
    }

    @Bean(name = "publicOpinionDataSourceTransactionManager")
    public DataSourceTransactionManager dataSourceTransactionManager(@Qualifier("publicOpinionDataSource") DataSource datasource){
        return new DataSourceTransactionManager(datasource);
    }

    @Bean("publicOpinionDataSourceSqlSessionTemplate")
    public SqlSessionTemplate publicOpinionDataSourceSqlSessionTemplate(
            @Qualifier("publicOpinionDataSourceSqlSessionFactory") SqlSessionFactory sessionFactory)
    {
        return new SqlSessionTemplate(sessionFactory, ExecutorType.BATCH);
    }

    // 分页拦截器
    @Bean
    public PaginationInterceptor paginationInterceptor(){
        return new PaginationInterceptor();
    }
    
}