mongoDB地理位置检索_mongotemplate.geonear

查询附近

@Test
public void testNear() {
    //构造坐标点
    GeoJsonPoint point = new GeoJsonPoint(116.404, 39.915);
    //构造半径
    Distance distanceObj = new Distance(1, Metrics.KILOMETERS);
    //画了一个圆圈
    Circle circle = new Circle(point, distanceObj);
    //构造query对象
    Query query = Query.query(Criteria.where("location").withinSphere(circle));
   
    List<Places> list = mongoTemplate.find(query, Places.class);
    list.forEach(System.out::println);
}

查询并获取距离

我们假设需要以当前坐标为原点，查询附近指定范围内的餐厅，并直接显示距离

//查询附近且获取间距
@Test
public void testNear1() {
    //1、构造中心点(圆点)
    GeoJsonPoint point = new GeoJsonPoint(116.404, 39.915);
    //2、构建NearQuery对象
    NearQuery query = NearQuery.near(point, Metrics.KILOMETERS).maxDistance(1, Metrics.KILOMETERS);
    //3、调用mongoTemplate的geoNear方法查询
    GeoResults<Places> results = mongoTemplate.geoNear(query, Places.class);
    //4、解析G