import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.mongodb.core.geo.GeoJsonPolygon;@Data
@NoArgsConstructor
@AllArgsConstructor
public class Area {private String name;private GeoJsonPolygon geoJsonPolygon;
}

{"name": "AAAA","geoJsonPolygon": {"points": [{"x": 3.4,"y": 3.9}, {"x": 6.2,"y": 8.1}, {"x": 9.8,"y": 3.1}, {"x": 3.4,"y": 3.9}],"coordinates": [{"type": "LineString","coordinates": [{"x": 3.4,"y": 3.9}, {"x": 6.2,"y": 8.1}, {"x": 9.8,"y": 3.1}, {"x": 3.4,"y": 3.9}]}],"type": "Polygon"}
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.data.geo.Point;
import org.springframework.data.mongodb.core.geo.GeoJsonPolygon;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;import java.util.ArrayList;
import java.util.List;@RestController
public class SendController {@Autowiredprivate RestTemplate restTemplate;@GetMapping(value = "/send")@ResponseBodypublic List sendArea(){Point point1 = new Point(3.4, 3.9);Point point2 = new Point(6.2, 8.1);Point point3 = new Point(9.8, 3.1);Point point4 = new Point(3.4, 3.9);List<Point> points = new ArrayList<>();points.add(point1);points.add(point2);points.add(point3);points.add(point4);List<Area> areaList = new ArrayList<>();areaList.add(new Area("AAAA",new GeoJsonPolygon(points)));areaList.add(new Area("BBBB",new GeoJsonPolygon(points)));areaList.add(new Area("CCCC",new GeoJsonPolygon(points)));String url = ReceiveController.BASE_URL+ReceiveController.POST_MAPPING;ResponseEntity entity = restTemplate.postForEntity(url, areaList,List.class);List body = (List) entity.getBody();return body;}@Beanpublic RestTemplate restTemplate(){return  new RestTemplate();}
}

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.TypeReference;
import org.springframework.data.geo.Point;
import org.springframework.data.mongodb.core.geo.GeoJsonPolygon;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;import java.util.ArrayList;
import java.util.List;@RestController
public class ReceiveController {public static final String BASE_URL = "http://localhost:8080";public static final String POST_MAPPING = "/receive";@PostMapping(value = POST_MAPPING)@ResponseBodypublic List areaList(@RequestBody String areaList){List<Area> list = new ArrayList<>();if(areaList == null ){return list;}/*** List<Area> listString = JSON.parseObject(areaList, new TypeReference<List<Area>>(){});* 注意这样写是错误的，Area包含属性GeoJsonPolygon，解析不了* 只好吧List的泛型写成String*/List<String> listString = JSON.parseObject(areaList, new TypeReference<List<String>>(){});JSONObject jsonObject = null;JSONObject polygonJsonObject = null;GeoJsonPolygon geoJsonPolygon = null;for (int i=0; i < listString.size(); i++){String s = listString.get(i);jsonObject = JSONObject.parseObject(s);//通过JSONObject对象获取key对应的valueString name = jsonObject.getString("name");//解析复杂的GeoJsonPolygon属性String geoJsonPolygonString = jsonObject.getString("geoJsonPolygon");polygonJsonObject = JSONObject.parseObject(geoJsonPolygonString);String pointsString = polygonJsonObject.getString("points");List<Point> points = JSON.parseObject(pointsString, new TypeReference<List<Point>>() {});geoJsonPolygon = new GeoJsonPolygon(points);Area area = new Area();area.setName(name);area.setGeoJsonPolygon(geoJsonPolygon);list.add(area);}return list;}
}