SpringBoot + MyBatis配置连接MySQL、SQL Server、Oracle数据库_springboot 同时连接sql server与oracle

在Spring Boot中配置连接多个数据库，你需要定义多个数据源并为每个数据源创建对应的SqlSessionFactory和MapperScanner。以下是一个配置示例：

@Configuration
public class DataSourceConfig {
 
    @Bean
    @Primary
    @ConfigurationProperties(prefix = "spring.datasource.mysql")
    public DataSource mysqlDataSource() {
        return DataSourceBuilder.create().build();
    }
 
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource.sqlserver")
    public DataSource sqlServerDataSource() {
        return DataSourceBuilder.create().build();
    }
 
    @Bean
    @ConfigurationProperties(prefix = "spring.datasource.oracle")
    public DataSource oracleDataSource() {
        return DataSourceBuilder.create().build();
    }
 
    @Bean
    public SqlSessionFactory mysqlSqlSessionFactory(@Qualifier("mysqlDataSource") DataSource mysqlDataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(mysqlDataSource);
        return sessionFactory.getObject();
    }
 
    @Bean
    public SqlSessionFactory sqlServerSqlSessionFactory(@Qualifier("sqlServerDataSource") DataSource sqlServerDataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(sqlServerDataSource);
        return sessionFactory.getObject();
    }
 
    @Bean
    public SqlSessionFactory oracleSqlSessionFactory(@Qualifier("oracleDataSource") DataSource oracleDataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(oracleDataSource);
        return sessionFactory.getObject();
    }
 
    @Bean
    public MapperScannerConfigurer mysqlMapperScannerConfigurer(@Qualifier("mysqlSqlSessionFactory") SqlSessionFactory sqlSessionFactory) {
        MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
        mapperScannerConfigurer.setSqlSessionFactoryBeanName("mysqlSqlSessionFactory");
        mapperScannerConfigurer.setBasePackage("com.example.mapper.mysql");
        re