多数据源

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>dynamic-datasource-spring-boot-starter</artifactId>
            <version>3.0.0</version>
        </dependency>

spring:
  datasource:
    dynamic:
      primary: master #设置默认的数据源或者数据源组,默认值即为master
      datasource:
        master:
          username: root
          password: root
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/dp?serverTimezone=Asia/Shanghai
        slave_1:
          username: root
          password: root
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/cs?serverTimezone=Asia/Shanghai
        slave_2:
          username: root
          password: root
          driver-class-name: com.mysql.jdbc.Driver
          url: jdbc:mysql://localhost:3306/pdbs?serverTimezone=Asia/Shanghai

@Controller
public class MyController {

    @Autowired
    JdbcTemplate jdbcTemplate;

    @GetMapping("find")
    @ResponseBody
    public List<Map<String, Object>> find(){
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from menu");
        return  list;
    }

    @DS(value = "slave_1")
    @GetMapping("find1")
    @ResponseBody
    public List<Map<String, Object>> find1(){
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from qiye");
        return  list;
    }

    @DS(value = "slave_2")
    @GetMapping("find2")
    @ResponseBody
    public List<Map<String, Object>> find2(){
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * from pdbs_admin");
        return  list;
    }
}