import com.alibaba.fastjson.JSONObject; import com.cxt.car.po.dto.address.Result; import com.cxt.car.util.baseUtils.JsonUtil; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL;   /**  * @Author: yansf  * @Description:根据经纬度获取地址  * @Date:Creat in 20:20 2019/12/11  * @Modified By:  */ public class AddressUntils {     static String secretKey = "此处是申请的key";       /**      * @param lat 纬度      * @param lng 经度      * @return      */     public static Result getAddress(String lat, String lng) throws IOException {         JSONObject obj = getLocationInfo(lat, lng).getJSONObject("result");         System.out.println(obj);         Result result = JsonUtil.fromJson(obj.toString(), Result.class);           return result;     }       public static JSONObject getLocationInfo(String lat, String lng) throws IOException {         String urlString = "https://apis.map.qq.com/ws/geocoder/v1/?location=" + lat + "," + lng + "&key=" + secretKey;         System.out.println("请求经纬度url:" + urlString);         URL url = new URL(urlString);         HttpURLConnection conn = (HttpURLConnection) url.openConnection();         conn.setDoInput(true);         conn.setRequestMethod("GET");         BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8"));         String line;         String res = "";         while ((line = in.readLine()) != null) {             res += line + "\n";         }         in.close();         JSONObject jsonObject = JSONObject.parseObject(res);         return jsonObject;     }         public static void main(String[] args) throws IOException {         Result address = getAddress("30.2084", "120.21201");         System.out.println(address.ad_info.city);       }   } 返回的json串: {"address":"浙江省杭州市滨江区人民路6号","ad_info":{"province":"浙江省","adcode":"330108","nation":"中国","city":"杭州市","district":"滨江区","name":"中国,浙江省,杭州市,滨江区","city_code":"156330100","location":{"lng":120.220459,"lat":30.16667},"nation_code":"156"},"address_reference":{"town":{"_distance":0,"_dir_desc":"内","location":{"lng":120.233566,"lat":30.183102},"id":"330108001","title":"西兴街道"},"street":{"_distance":8.6,"_dir_desc":"北","location":{"lng":120.206032,"lat":30.204729},"id":"1172092355888263234","title":"新月路"},"crossroad":{"_distance":193,"_dir_desc":"东","location":{"lng":120.21003,"lat":30.208891},"id":"6417297","title":"丹枫路/泰安路(路口)"},"street_number":{"_distance":0,"_dir_desc":"","location":{"lng":120.211739,"lat":30.20863},"id":"6709388790419249714","title":"人民路6号"},"landmark_l2":{"_distance":0,"_dir_desc":"内","location":{"lng":120.211739,"lat":30.20863},"id":"13795638749391557063","title":"滨江区政府"}},"location":{"lng":120.21201,"lat":30.2084},"formatted_addresses":{"rough":"滨江区政府(新月路北)","recommend":"滨江区政府(新月路北)"},"address_component":{"province":"浙江省","nation":"中国","city":"杭州市","street":"人民路","district":"滨江区","street_number":"人民路6号"}} 代码中还用到了一个工具类,将json转换成实体类 import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; function(){ //外汇返佣 http://www.kaifx.cn/ import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException;   /**  * @Author: yansf  * @Description:JSON工具类  * @Date:Creat in 17:22 2019/12/10  * @Modified By:  */ public class JsonUtil {     private static final Logger LOGGER = LoggerFactory.getLogger(JsonUtil.class);       private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();       /**      * 将POJO转换为JSON      */     public static <T> String toJson(T obj) {         String json;         try {             json = OBJECT_MAPPER.writeValueAsString(obj);         } catch (JsonProcessingException e) {             LOGGER.error("convert POJO to JSON failure", e);             throw new RuntimeException(e);             //e.printStackTrace();         }         return json;     }       /**      * 将JSON转为POJO      */     public static <T> T fromJson(String json, Class<T> type) {         T pojo;         try {             pojo = OBJECT_MAPPER.readValue(json, type);         } catch (IOException e) {             LOGGER.error("convert JSON to POJO failure", e);             throw new RuntimeException(e);             //e.printStackTrace();         }         return pojo;       } }  |