dynamic:
      primary: master #设置默认的数据源或者数据源组,默认值即为master
      strict: false #设置严格模式,默认false不启动. 启动后在未匹配到指定数据源时候会抛出异常,不启动则使用默认数据源.
      datasource:
        master:
          url: jdbc:mysql://ip:端口/库名?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=Asia/Shanghai
          username: root
          password: root
          driver-class-name: com.mysql.cj.jdbc.Driver # 3.2.0开始支持SPI可省略此配置
        slave_1:
          url: jdbc:sqlserver://ip:端口;DatabaseName=ykt
          username: sa
          password: 123
          driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
time: 2020-01-01 00:00:00

@Service
@Slf4j
public class HelloService {
    @Autowired
    private DataMapper dataMapper;

    @Autowired
    private ParkRecordMapper parkRecordMapper;

    @Value("${time}")
    @JsonFormat(timezone = "GMT+8",pattern = "yyyy-MM-dd HH:mm:ss")
    @DateTimeFormat(pattern="yyyy-MM-dd HH:mm:ss")
    private Date starTime;
    
    public void saveData() throws ParseException {
//以下为具体业务，根据自己需求修改
        log.info("进入数据转存定时任务");
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date endTime = new Date();
        List<ComeCar> comeCars = dataMapper.selectByTime(starTime,endTime);
        if (comeCars!=null && comeCars.isEmpty()){
            return;
        }
        for (int i = 0; i < comeCars.size(); i++) {
            ComeCar comeCar = comeCars.get(i);
            log.info("正在转存数据");
            ParkRecord parkRecord = new ParkRecord();
            parkRecord.setCreateDate(formatter.parse(comeCar.getComeDate()));
            parkRecord.setPhoto(comeCar.getComePic());
            log.info("单条数据为"+parkRecord);
            parkRecordMapper.insert(parkRecord);
        }
        starTime = endTime;
        log.info("刷新数据成功");
    }
}

5.创建一个定时器（SchedulingTask）

@Component
@Async
@Slf4j
public class SchedulingTask {

    private final long TEN_MINUTES = 600000;

    @Autowired
    HelloService helloService;

    /**
     * 每10分钟刷新一下数据
     */
    @Scheduled(fixedRate = TEN_MINUTES)
    public void refreshData() {
        try {
            helloService.saveData();
            log.info("定时任务开启，每10分钟刷新一下数据");
        } catch (ParseException e) {
            log.error("刷新数据失败,sql Server数据库有可能挂了");
            e.printStackTrace();
        }
    }
}

6.HelloController

@RestController
public class HelloController {
    @Autowired
    HelloService helloService;

    @GetMapping("hello")
    public String hello() throws ParseException {
        helloService.saveData();
        return "hello";
    }
}

7.运行测试没问题，修改模拟数据库地址，maven导出jar包，再到云服务器上运行就可以了！

8.具体业务其中一个mapper（sqlserver表）

@Mapper
public interface DataMapper {

    @DS("slave_1")
    List<ComeCar> selectByTime(@Param("star_time") Date starTime,@Param("end_time")Date endTime);
}