springboot定时同步数据,从sqlserver到mysql

定时同步数据,从sqlserver到mysql
 
注意事项:
一.primary: master #设置默认的数据源或者数据源组,默认值即为master
二.@Scheduled() 和 @DS("slave_1")注解
 
步骤:
1.在原先运行的程序外,新建多加一个springboot程序
 
2.配置好yml,连接两个数据库,全局配置一个开始时间(主从数据源)
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: root password: root driver-class-name: com.microsoft.sqlserver.jdbc.SQLServerDriver
time: 2020-01-01 00:00:00
 
3.写好两个实体类,一个sqlserver的表,一个mysql的表
 
4.写好转移的逻辑业务(HelloService中)
@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); }

 

 

posted @ 2022-08-29 17:22  Sjh_code  阅读(1146)  评论(0编辑  收藏  举报