springboot 获取SqlSessionFactory 列表

根据提供的引用内容，获取Spring Boot中的SqlSessionFactory实例的步骤如下：

1. 首先，确保在pom.xml文件中添加了相关的依赖版本，如下所示：

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.mybatis.spring.boot</groupId>
        <artifactId>mybatis-spring-boot-starter</artifactId>
    </dependency>
    <!-- 其他依赖 -->
</dependencies>

2. 在Spring Boot的配置文件（application.properties或application.yml）中配置数据源信息，例如：

spring.datasource.url=jdbc:mysql://localhost:3306/mydatabase
spring.datasource.username=root
spring.datasource.password=123456

3. 创建一个配置类，用于配置MyBatis的SqlSessionFactory实例，例如：

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DriverManagerDataSource;

import javax.sql.DataSource;

@Configuration
public class MyBatisConfig {

    @Autowired
    private DataSource dataSource;

    @Bean
    public SqlSessionFactory sqlSessionFactory() throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        sessionFactory.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*.xml"));
        return sessionFactory.getObject();
    }

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");        dataSource.setUrl("jdbc:mysql://localhost:3306/mydatabase");
        dataSource.setUsername("root");
        dataSource.setPassword("123456");
        return dataSource;
    }
}

4. 在需要使用SqlSessionFactory的地方，注入SqlSessionFactory实例，并使用它来获取mapper接口实例，例如：

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

@Repository
public class MyRepository {

    private final SqlSessionTemplate sqlSessionTemplate;

    @Autowired
    public MyRepository(SqlSessionFactory sqlSessionFactory) {
        this.sqlSessionTemplate = new SqlSessionTemplate(sqlSessionFactory);
    }

    public void doSomething() {
        MyMapper myMapper = sqlSessionTemplate.getMapper(MyMapper.class);
        // 使用myMapper进行数据库操作
    }
}

以上是获取Spring Boot中的SqlSessionFactory实例的步骤。通过配置数据源和SqlSessionFactory，我们可以使用MyBatis的mapper接口实例来操作数据库。