Java mysql详细讲解双数据源配置使用

package com.zkhx.config;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
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.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
@Configuration
// 配置mybatis的接口类放的地方
@MapperScan(basePackages = "com.zkhx.dao.master", sqlSessionFactoryRef = "dbSqlSessionFactory")
public class DataSourceConfig {
    @Bean(name = "db")
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource.db1")
    public DataSource getDateSource1() {
        return DataSourceBuilder.create().build();
    }
    @Bean
    @ConfigurationProperties(prefix = "mybatis.configuration")
    public org.apache.ibatis.session.Configuration configuration() {
        return new org.apache.ibatis.session.Configuration();
    }
    @Bean(name = "dbSqlSessionFactory")
    @Primary
    public SqlSessionFactory test1SqlSessionFactory(@Qualifier("db") DataSource datasource, org.apache.ibatis.session.Configuration configuration)
            throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(datasource);
        bean.setConfiguration(configuration);
        bean.setMapperLocations(
                // 设置mybatis的xml所在位置
                new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/master/*.xml"));
        return bean.getObject();
    }
    @Bean("dbSqlSessionTemplate")
    // 表示这个数据源是默认数据源
    @Primary
    public SqlSessionTemplate test1sqlsessiontemplate(
            @Qualifier("dbSqlSessionFactory") SqlSessionFactory sessionfactory) {
        return new SqlSessionTemplate(sessionfactory);
    }
}

package com.zkhx.config;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Configuration;
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.core.io.support.PathMatchingResourcePatternResolver;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.zkhx.dao.vice", sqlSessionFactoryRef = "db2SqlSessionFactory")
public class DataSourceViceConfig {
    @Bean(name = "db2")
    @ConfigurationProperties(prefix = "spring.datasource.db2")
    public DataSource getDateSource2() {
        return DataSourceBuilder.create().build();
    }
    @Bean(name = "db2SqlSessionFactory")
    public SqlSessionFactory test2SqlSessionFactory(@Qualifier("db2") DataSource datasource)
            throws Exception {
        SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
        bean.setDataSource(datasource);
        bean.setMapperLocations(
                new PathMatchingResourcePatternResolver().getResources("classpath*:mapper/vice/*.xml"));
        return bean.getObject();
    }
    @Bean("db2SqlSessionTemplate")
    public SqlSessionTemplate test2sqlsessiontemplate(
            @Qualifier("db2SqlSessionFactory") SqlSessionFactory sessionfactory) {
        return new SqlSessionTemplate(sessionfactory);
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zkhx.dao.vice.StDBDataDao">
</mapper>