mongodb查找附近的单车为空

GeoResults: [averageDistance: 0.0 KILOMETERS, results: ]

下面是代码：

@Override
	public GeoResults<Bikes> findNear(double longitude, double latitude) {
		//查找附件500米的未使用的单车，要求只显示最近的10辆
		NearQuery nearQuery = NearQuery.near(longitude, latitude, Metrics.KILOMETERS);
		nearQuery.maxDistance(0.2).query(new Query().addCriteria(Criteria.where("status").is(0)).limit(10));

		//GeoReslut不但封装了要查找的单车数据，还封装了距离
		GeoResults<Bikes> bikes = mongoTemplate.geoNear(nearQuery, Bikes.class);
		return bikes;
	}