调用高德地图api获取全国行政区域及经纬度

package china;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.swagger.annotations.ApiModelProperty;
import org.springframework.http.ResponseEntity;
import org.springframework.util.CollectionUtils;
import org.springframework.web.client.RestTemplate;

import java.util.*;
import java.util.concurrent.atomic.AtomicInteger;


public class ChinaRegionalTest {
    public static void main(String[] args) throws Exception {
        String url = "https://restapi.amap.com/v3/config/district?keywords=100000&subdistrict=3&key=<用户的key>";
        RestTemplate restTemplate = new RestTemplate();
        ResponseEntity forEntity = restTemplate.getForEntity(url, String.class);
        String body = forEntity.getBody();
        ObjectMapper objectMapper = new ObjectMapper();
        Map value = objectMapper.readValue(body, new TypeReference>() {
        });
        Object districts = value.get("districts");
        List country = objectMapper.convertValue(districts, new TypeReference>() {
        });

        ChinaRegionalBean china = country.get(0);
        Deque regionalDeque = new ArrayDeque<>();
        regionalDeque.add(china);
        List chinaRegionals = new ArrayList<>();
        String streetLevel = "street";
        AtomicInteger atomicInteger = new AtomicInteger();
        ChinaRegionalBean regional;
        while ((regional = regionalDeque.pollFirst()) != null) {
            atomicInteger.set(0);
            String adcode = regional.getAdcode();
            String level = regional.getLevel();
            Object citycode = regional.getCitycode();
            if (citycode instanceof String) {
                regional.setCitycode(String.valueOf(citycode));
            }

            Integer hierarchy = null;
            switch (level) {
                case "country":
                    hierarchy = 0;
                    break;
                case "province":
                    hierarchy = 1;
                    break;
                case "city":
                    hierarchy = 2;
                    break;
                case "district":
                    hierarchy = 3;
                    break;
                case "street":
                    hierarchy = 3;
                    break;
                default:
                    break;

            }
            regional.setHierarchy(hierarchy);

            chinaRegionals.add(regional);
            List child = regional.getDistricts();
            if (CollectionUtils.isEmpty(child)) {
                continue;
            }

            child.forEach(chinaRegionalBean -> {
                chinaRegionalBean.setParentcode(adcode);
                //解决省直辖县级行政区域没有区县信息导致区域编码重复问题
                if (streetLevel.equals(chinaRegionalBean.getLevel())) {
                    String formatStr = String.format("%02d", atomicInteger.incrementAndGet());
                    chinaRegionalBean.setAdcode(chinaRegionalBean.getAdcode() + formatStr);
                }
                regionalDeque.add(chinaRegionalBean);
            });
            regional.setDistricts(null);
        }

        System.out.println(chinaRegionals.size());
    }

}

@JsonIgnoreProperties(ignoreUnknown = true)
class ChinaRegionalBean {

    @ApiModelProperty(value = "城市编码")
    private Object citycode;

    @ApiModelProperty(value = "区域编码")
    private String adcode;

    @ApiModelProperty(value = "行政区名称")
    private String name;

    @ApiModelProperty(value = "区域中心点")
    private String center;

    @ApiModelProperty(value = "行政区划级别：country:国家 province:省份 city:市 district:区县")
    private String level;
    @ApiModelProperty(value = "行政区划层级： 0:国家 1:省份 2:市 3:区县")
    private Integer hierarchy;

    @ApiModelProperty(value = "上级区域编码")
    private String parentcode;

    private List districts;

    public Object getCitycode() {
        return citycode;
    }

    public void setCitycode(Object citycode) {
        this.citycode = citycode;
    }

    public String getAdcode() {
        return adcode;
    }

    public void setAdcode(String adcode) {
        this.adcode = adcode;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getCenter() {
        return center;
    }

    public String getParentcode() {
        return parentcode;
    }

    public void setParentcode(String parentcode) {
        this.parentcode = parentcode;
    }

    public void setCenter(String center) {
        this.center = center;
    }

    public String getLevel() {
        return level;
    }

    public void setLevel(String level) {
        this.level = level;
    }

    public List getDistricts() {
        return districts;
    }

    public void setDistricts(List districts) {
        this.districts = districts;
    }

    public Integer getHierarchy() {
        return hierarchy;
    }

    public void setHierarchy(Integer hierarchy) {
        this.hierarchy = hierarchy;
    }
}