Springboot+MongoDB的五种操作方式

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

spring:
    mongodb:
      host: 192.168.56.10
      port: 27017
      database: share #指定操作的数据库

@Data
@Schema(description = "站点位置")
public class StationLocation
{

    @Schema(description = "id")
    @Id
    private String id;

    @Schema(description = "站点id")
    private Long stationId;

    @Schema(description = "经纬度")
    private GeoJsonPoint location;

    @Schema(description = "创建时间")
    private Date createTime;
}

import org.springframework.data.geo.Circle;
import org.springframework.data.geo.Distance;
import org.springframework.data.geo.Metrics;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.geo.GeoJsonPoint;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;  

  // 注入
  @Autowired
  private MongoTemplate mongoTemplate;

  // 调用mongoTemplate，查询周边数据

// 查询指定经纬度附近的站点
public List<StationLocation> nearbyStation(String latitude, String longitude) {
	//确定中心点，根据经纬度获取站点信息
	GeoJsonPoint point = new GeoJsonPoint(Double.parseDouble(longitude), Double.parseDouble(latitude));
	//设置查询半径，查询站点周边50公里范围的信息
	Distance distance = new Distance(50, Metrics.KILOMETERS);
	//画圆 确定查询范围
	Circle circle = new Circle(point, distance);
	//查询MongoDB数据库中站点信息
	Query query = new Query(Criteria.where("location").withinSphere(circle));
	List<StationLocation> stations = mongoTemplate.find(query, StationLocation.class);
}

  
   

//StationLocation为要查询的文档对应的实体类，String为实体类StationLocation主键的类型
public interface StationLocationRepository extends MongoRepository<StationLocation, String> {
    
	//方法要规范命名，mongodb才能按图索骥找到对应的数据
    StationLocation getByStationId(Long id);

}

 @Autowired
 private StationLocationRepository stationLocationRepository;
 
 public int saveStation(Station station) {
        String provinceName = regionService.getNameByCode(station.getProvinceCode());
        String cityName = regionService.getNameByCode(station.getCityCode());
        String districtName = regionService.getNameByCode(station.getDistrictCode());
        station.setFullAddress(provinceName + cityName + districtName + station.getAddress());
        int rows = stationMapper.insert(station);

        StationLocation stationLocation = new StationLocation();
        stationLocation.setId(ObjectId.get().toString());
        stationLocation.setStationId(station.getId());
        stationLocation.setLocation(new GeoJsonPoint(station.getLongitude().doubleValue(), station.getLatitude().doubleValue()));
        stationLocation.setCreateTime(new Date());
        stationLocationRepository.save(stationLocation);

        return rows;
    }

@Autowired
private StationLocationRepository stationLocationRepository;

public int updateStation(Station station) {

	StationLocation stationLocation = stationLocationRepository.getByStationId(station.getId());
	stationLocation.setLocation(new GeoJsonPoint(station.getLongitude().doubleValue(), station.getLatitude().doubleValue()));
	stationLocationRepository.save(stationLocation);
	return rows;
}

@Autowired
private ReactiveMongoTemplate reactiveMongoTemplate;

public Mono<User> findUserById(String id) {
    return reactiveMongoTemplate.findById(id, User.class);
}

// 创建ReactiveRepository
public interface UserReactiveRepository extends ReactiveMongoRepository<User, String> {
    Flux<User> findByName(String name);
}

// 使用
@Autowired
private UserReactiveRepository userReactiveRepository;

@Autowired
private MongoClient mongoClient;

public void insertUser(User user) {
    MongoDatabase database = mongoClient.getDatabase("test");
    MongoCollection<Document> collection = database.getCollection("users");
    collection.insertOne(new Document("name", user.getName())
        .append("age", user.getAge()));
}