借助百度api通过经纬度查询位置信息

来源：互联网发布：成都青年旅舍知乎编辑：程序博客网时间：2024/06/12 00:25

通过百度提供的api和经纬度信息，查询省份信息，用java语言实现，需要百度开发者密钥，这个可以自行申请

代码如下

public String locationInfo(String x,String y) throws Exception{//x:纬度，y:经度
       JSONObject json=null;
       BufferedReader in = null;
       String url = "http://api.map.baidu.com/geocoder/v2/?output=json&ak=你的密钥&location="+x+","+y;
       String result="";
       URL realUrl = new URL(url);
       URLConnection conn = realUrl.openConnection();
       // 设置通用的请求属性
       conn.setRequestProperty("accept", "*/*");
       conn.setRequestProperty("connection", "Keep-Alive");
       conn.setRequestProperty("user-agent","Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
       in = new BufferedReader(
               new InputStreamReader(conn.getInputStream(),"UTF-8"));//gbk什么的也行吧这里我就没做实验了
       String line;
       while ((line = in.readLine()) != null) {
           result += line;
       }

json=JSONObject.fromObject(result);

        String jsonSts=json.getString("status");
       if("0".equals(jsonSts)){
           String province=json.getJSONObject("result").getJSONObject("addressComponent").getString("province");
           result=province;
           System.err.println(province);
       }
       return result;
   }

返回的json串的样式是这个样子的

/*{"status":0,
   * "result":{"location":{"lng":******,"lat":********},
   *            "formatted_address":"******",
   *            "business":"***,***,***",
   *            "addressComponent":{"city":"*****",
   *                                "country":"***",
   *                                "direction":"",
   *                                "distance":"",
   *                                "district":"*****",
   *                                "province":"******",
   *                                "street":"******",
   *                                "street_number":"",
   *                                "country_code":0},
   *            "poiRegions":[],
   *            "sematic_description":"*************",
   *            "cityCode":131}}

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