SpringBoot中如何动态切换Sqlite3数据库

SpringBoot中访问Sqlite数据库的数据源配置类如下：

package com.yuanjingyan.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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.sqlite.SQLiteDataSource;

import javax.sql.DataSource;

//表示这个类是一个配置类
@Configuration
//配置mybatis接口类放置的地方
@MapperScan(basePackages = "com.yuanjingyan.mappersqlite", sqlSessionFactoryRef = "sqliteSqlSessionFactory")
public class SqliteDataSourceConfig {
    //将这个对象放入Spring容器中
    @Bean(name = "sqliteDataSource")
    //读取yml中的数据库配置参数，映射成为一个对象，prefix表示参数的前缀
    @ConfigurationProperties(prefix="spring.sqlitedatasource") //告诉自动加载配置的属性
    public DataSource sqlserverDataSource() {
        SQLiteDataSource ds=new SQLiteDataSource();
        return ds;
    }

    @Bean(name = "sqliteDataSource")
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.sqlite.JDBC");
        //初始化时指定一个sqlite数据库路径，后面可以进行修改
        dataSource.setUrl("jdbc:sqlite:C:\\Users\\Administrator\\Desktop\\test.db");
        dataSource.setUsername("");
        dataSource.setPassword("");

        return dataSource;
    }

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

    @Bean("sqliteSqlSessionTemplate")
    public SqlSessionTemplate sqlitesqlsessiontemplate(
            @Qualifier("sqliteSqlSessionFactory") SqlSessionFactory sessionfactory) {
        return new SqlSessionTemplate(sessionfactory);
    }
}

在使用的时候，使用DriverManagerDataSource的setUrl方法设置新的sqlite数据源的路径即可切换数据库。

@Autowired
private DriverManagerDataSource dataSource;

dataSource.setUrl("jdbc:sqlite:" + newFilePath);

//可以操作新的数据库

...