Java根据百度API获得经纬度，然后根据经纬度在获得城市信息(未测试)

来源：互联网发布：python设计模式知乎编辑：程序博客网时间：2024/04/29 21:35

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.io.UnsupportedEncodingException;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection; /** * 获取经纬度* * @author jueyue 返回格式：Map<String,Object> map map.put("status", * reader.nextString());//状态 map.put("result", list);//查询结果 * list<map<String,String>> * 密钥:f247cdb592eb43ebac6ccd27f796e2d2 */ public class GetLatAndLngByBaidu {          /**     * @param addr     * 查询的地址     * @return     * @throws IOException     */     public Object[] getCoordinate(String addr) throws IOException {         String lng = null;//经度        String lat = null;//纬度        String address = null;         try {             address = java.net.URLEncoder.encode(addr, "UTF-8");         }catch (UnsupportedEncodingException e1) {             e1.printStackTrace();         }         String key = "f247cdb592eb43ebac6ccd27f796e2d2";         String url = String .format("http://api.map.baidu.com/geocoder?address=%s&output=json&key=%s", address, key);         URL myURL = null;         URLConnection httpsConn = null;         try {             myURL = new URL(url);         } catch (MalformedURLException e) {             e.printStackTrace();         }         InputStreamReader insr = null;        BufferedReader br = null;        try {             httpsConn = (URLConnection) myURL.openConnection();// 不使用代理             if (httpsConn != null) {                 insr = new InputStreamReader( httpsConn.getInputStream(), "UTF-8");                 br = new BufferedReader(insr);                 String data = null;                 int count = 1;                while((data= br.readLine())!=null){                     if(count==5){                        lng = (String)data.subSequence(data.indexOf(":")+1, data.indexOf(","));//经度                        count++;                    }else if(count==6){                        lat = data.substring(data.indexOf(":")+1);//纬度                        count++;                    }else{                        count++;                    }                }             }         } catch (IOException e) {             e.printStackTrace();         } finally {            if(insr!=null){                insr.close();            }            if(br!=null){                br.close();            }        }        return new Object[]{lng,lat};     }       public static void main(String[] args) throws IOException {        GetLatAndLngByBaidu getLatAndLngByBaidu = new GetLatAndLngByBaidu();        Object[] o = getLatAndLngByBaidu.getCoordinate("成都市天府四街");        System.out.println(o[0]);//经度        System.out.println(o[1]);//纬度    } }

输出结果：104.04701

30.548397

调用以下路径根据经纬度获取地址，返回数据为JSON格式，

http://api.map.baidu.com/geocoder/v2/?ak=pmCgmADsAsD9rEXkqWNcTzjd&location=30.548397,104.04701&output=json&pois=1

返回结果：

{"status":0,"result":{"location":{"lng":104.04701001273,"lat":30.548396923974},"formatted_address":"四川省成都市武侯区天府四街","business":"","addressComponent":{"city":"成都市","district":"武侯区","province":"四川省","street":"天府四街","street_number":""},"pois":[{"addr":"四川省成都市武侯区天府四街","cp":"NavInfo","distance":"144","name":"保利·心语花园","poiType":"地产小区","point":{"x":104.04823889466,"y":30.54874673449},"tel":"","uid":"881965b85a8d8a977369d348","zip":""},{"addr":"四川省成都市武侯区天府四街","cp":"NavInfo","distance":"629","name":"逸都国际","poiType":"地产小区","point":{"x":104.05247889667,"y":30.547152788724},"tel":"","uid":"e49f869c4f156be9c6effb6b","zip":""},{"addr":"四川省成都市武侯区剑南大道","cp":"NavInfo","distance":"881","name":"世豪广场","poiType":"地产小区","point":{"x":104.05252381195,"y":30.553318490823},"tel":"","uid":"a2a7b0b167a0e1997adbd206","zip":""},{"addr":"四川省成都市武侯区德赛三街","cp":"NavInfo","distance":"989","name":"顾客停车场","poiType":"交通设施","point":{"x":104.04942465794,"y":30.555798655385},"tel":"","uid":"d135a6e15571911483a00cfe","zip":""}],"cityCode":75}}

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