SpringBoot配置JPA和mybatis双数据源

JPA配置为spring.datasource前缀，mybatis为spring.datasource.eps开头

1.创建DataSourceConfig配置类，来定义数据源 其实 @Primary表示默认，如果使用了JPA则默认使用该数据源

package com.xinyuan.core.config;

import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;

import javax.sql.DataSource;

@Configuration
public class DataSourceConfig {

    @Bean(name = "tenderDataSource")
    @Qualifier("tenderDataSource")
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource")
    public DataSource primaryDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "epsDataSource")
    @Qualifier("epsDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.eps")
    public DataSource secondaryDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "epsJdbcTemplate")
    @Primary
    @Qualifier("epsJdbcTemplate")
    public NamedParameterJdbcTemplate primaryJdbcTemplate(
            @Qualifier("epsDataSource") DataSource dataSource) {
        return new NamedParameterJdbcTemplate(dataSource);
    }

}

2.配置MyBatis

package com.xinyuan.core.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.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import javax.sql.DataSource;

/**
 * @author gaoyuzhe
 * @date 2018/1/16.
 */
@Configuration
@MapperScan(basePackages = {"com.xinyuan.tender.mapper"}, sqlSessionFactoryRef = "sqlSessionFactory")
public class MyBatisConfig {

    @Autowired
    @Qualifier("epsDataSource")
    private DataSource mybaitsDs;

    @Bean
    public SqlSessionFactory sqlSessionFactory() throws Exception {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        // 使用epsDataSource数据源, 连接业务库
        factoryBean.setDataSource(mybaitsDs);
        Resource[] mapperLocations = new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*.xml");
        factoryBean.setMapperLocations(mapperLocations);
        return factoryBean.getObject();

    }
    @Bean
    public SqlSessionTemplate sqlSessionTemplate() throws Exception {
        // 使用上面配置的Factory
        SqlSessionTemplate template = new SqlSessionTemplate(sqlSessionFactory());
        return template;
    }
}