<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
    <version>${version}</version>
</dependency>

<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>dynamic-datasource-spring-boot3-starter</artifactId>
    <version>${version}</version>
</dependency>

spring:
  datasource:
    dynamic:
      enabled: true #啟用動態(tài)數(shù)據(jù)源，默認true
      primary: master #設置默認的數(shù)據(jù)源或者數(shù)據(jù)源組,默認值即為master
      strict: false #嚴格匹配數(shù)據(jù)源,默認false. true未匹配到指定數(shù)據(jù)源時拋異常,false使用默認數(shù)據(jù)源
      grace-destroy: false #是否優(yōu)雅關閉數(shù)據(jù)源，默認為false，設置為true時，關閉數(shù)據(jù)源時如果數(shù)據(jù)源中還存在活躍連接，至多等待10s后強制關閉
      datasource:
        master:
          url: jdbc:mysql://xx.xx.xx.xx:3306/dynamic
          username: root
          password: 123456
          driver-class-name: com.mysql.jdbc.Driver # 3.2.0開始支持SPI可省略此配置
        slave_1:
          url: jdbc:mysql://xx.xx.xx.xx:3307/dynamic
          username: root
          password: 123456
          driver-class-name: com.mysql.jdbc.Driver
        slave_2:
          url: ENC(xxxxx) # 內置加密,使用請查看詳細文檔
          username: ENC(xxxxx)
          password: ENC(xxxxx)
          driver-class-name: com.mysql.jdbc.Driver
        #......省略
        #以上會配置一個默認庫master，一個組slave下有兩個子庫slave_1,slave_2

spring:
  datasource:
    dynamic:
      datasource:
        master_1:
        master_2:
        slave_1:
        slave_2:
        slave_3:

spring:
  datasource:
    dynamic:
      datasource:
        mysql:
        oracle:
        sqlserver:
        postgresql:
        h2:

spring:
  datasource:
    dynamic:
      datasource:
        master:
        slave_1:
        slave_2:
        oracle_1:
        oracle_2:

@Service
@DS("slave")
public class UserServiceImpl implements UserService {
    @Autowired
    private JdbcTemplate jdbcTemplate;
    public List selectAll() {
        return jdbcTemplate.queryForList("select * from user");
    }
    @Override
    @DS("slave_1")
    public List selectByCondition() {
        return jdbcTemplate.queryForList("select * from user where age >10");
    }
}

// 切換到slave數(shù)據(jù)庫
DynamicDataSourceContextHolder.push("slave");

@Resource
private DataSource dataSource;
@Resource
private DefaultDataSourceCreator dataSourceCreator;
public void add(){
    DynamicRoutingDataSource ds = (DynamicRoutingDataSource) dataSource;
    // 配置數(shù)據(jù)源
    DataSourceProperty dataSourceProperty = new DataSourceProperty();
    dataSourceProperty.setLazy(true);
    dataSourceProperty.setUsername("root");
    dataSourceProperty.setPassword("123456");
    dataSourceProperty.setUrl(url);
    dataSourceProperty.setDriverClassName(driverClassName);
    // 添加數(shù)據(jù)源
    ds.addDataSource(key, dataSourceCreator.createDataSource(dataSourceProperty));
}  

@Mapper
public interface DatabaseMapper {
    @Select("CREATE DATABASE IF NOT EXISTS ${databaseName}")
    void createDatabase( String databaseName);
}

 // 配置數(shù)據(jù)源
DataSourceProperty dataSourceProperty = new DataSourceProperty();
dataSourceProperty.setLazy(true);
dataSourceProperty.setUsername(username);
dataSourceProperty.setPassword(password);
dataSourceProperty.setUrl(url);
dataSourceProperty.setDriverClassName(driverClassName);
// 創(chuàng)建sqlSessionFactory，配置mapper類
MybatisSqlSessionFactoryBean sqlSessionFactoryBean = new MybatisSqlSessionFactoryBean();
MybatisConfiguration configuration = new MybatisConfiguration();
configuration.addMapper(DatabaseMapper.class);
sqlSessionFactoryBean.setConfiguration(configuration);
        sqlSessionFactoryBean.setDataSource(dataSourceCreator.createDataSource(dataSourceProperty));
// 獲取sqlSession
SqlSession sqlSession = Objects.requireNonNull(sqlSessionFactoryBean.getObject()).openSession();
DatabaseMapper mapper = sqlSession.getMapper(DatabaseMapper.class);
// 初始化數(shù)據(jù)庫，參數(shù)為數(shù)據(jù)庫名注意要使用 `` 包裹起來。
mapper.createDatabase("`databaseName`");

ResourceDatabasePopulator popular = new ResourceDatabasePopulator();
// xxx.sql 為resource目錄下文件。
popular.addScript(new ClassPathResource("xxx.sql"));
// 傳入數(shù)據(jù)源執(zhí)行sql腳本。
popular.execute(dataSource);