一、SpringDataMongoDB

SpringData家族成員之一，用於操作MongoDB的持久層框架，封裝了底層的mongodb-driver

1. 匯入依賴

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

2. 建立.yml 和 建立啟動類
3. dao

public interface SpitDao extends MongoRepository<Spit,String> {
}

4. service

@Service
@Transactional
public class SpitService {//因為是微服務，所以就直接介面和實現寫在一起了，利用架構解耦就可以了
    @Autowired
    private SpitDao spitDao;
    @Autowired
    private IdWorker idWorker;

    public List<Spit> findAll
 
(){
        return  spitDao.findAll();
    }

    public Spit finfById(String id){
        //springboot2.0.1 下data jpa的findOne版本限制。
        return spitDao.findById(id).get();
    }

    public void save(Spit spit){
        spit.set_id(idWorker.nextId()+"");
        spitDao.save(spit);
    }

    public
 
 void update(Spit spit){
        spitDao.save(spit);
    }

    public void deleteById(String id){
        spitDao.deleteById(id);

    }
 }

5. controller

@RestController
@CrossOrigin    //跨域
@RequestMapping("/spit")
public class SpitController {
    @Autowired
    private SpitService spitService;

    @RequestMapping(method= RequestMethod.GET)
    public Result findAll(){
        return new Result(true, StatusCode.OK,"查詢成功",spitService.findAll());
    }

    @RequestMapping(value = "/{spitId}",method = RequestMethod.GET)
    public Result findById(@PathVariable String spitId){
        return new Result(true,StatusCode.OK,"查詢成功",spitService.finfById(spitId));
    }

    @RequestMapping(method= RequestMethod.GET)
    public Result save(@RequestBody Spit spit){
        spitService.save(spit);
        return new Result(true,StatusCode.OK,"儲存成功");
    }

    @RequestMapping(value = "/{spitId}", method= RequestMethod.PUT)
    public Result update(@PathVariable String spitId,@RequestBody Spit spit){
        spit.set_id(spitId);
        spitService.update(spit);
        return new Result(true,StatusCode.OK,"修改成功");
    }

    @RequestMapping(value = "/{spitId}",method= RequestMethod.DELETE)
    public Result delete(@PathVariable String spitId){
        spitService.deleteById(spitId);
        return new Result(true,StatusCode.OK,"刪除成功");
    }
}