获取某地的经纬度 && 通过经纬度获取相应的地理位置详解编程语言

 /**  
    * @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 { 
        GetLocation getLatAndLngByBaidu = new GetLocation(); 
        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 
    }

104.063832 
30.54855

public static void getCityFromLngAndlat() 
{ 
//通过修改这里的location（经纬度）参数，即可得到相应经纬度的详细信息 
String url2 = "http://api.map.baidu.com/geocoder/v2/?ak=pmCgmADsAsD9rEXkqWNcTzjd&location=22.75424,112.76535&output=json&pois=1 "; 
        URL myURL2 = null;  
        URLConnection httpsConn2 = null;  
        try {  
            myURL2 = new URL(url2);  
        } catch (MalformedURLException e) {  
            e.printStackTrace();  
        }  
        InputStreamReader insr2 = null; 
        BufferedReader br2 = null; 
        try {  
            httpsConn2 = (URLConnection) myURL2.openConnection();// 不使用代理  
            if (httpsConn2 != null) {  
                insr2 = new InputStreamReader( httpsConn2.getInputStream(), "UTF-8");  
                br2 = new BufferedReader(insr2);  
                String data2 = br2.readLine();  
                try 
                { 
                                     //解析得到的json格式数据 
                    JSONObject dataJson = new JSONObject(data2); 
                    JSONObject result = dataJson.getJSONObject("result"); 
                    JSONObject addressComponent = result.getJSONObject("addressComponent"); 
                    String city = addressComponent.getString("city"); 
                     
                    System.out.println("city = " + city); 
                 
                 
                } catch (JSONException e) 
                { 
                    e.printStackTrace(); 
                } 
            }  
        } catch (IOException e) {  
            e.printStackTrace();  
        } finally { 
            if(insr2!=null){ 
                insr2.close(); 
            } 
            if(br!=null){ 
                br2.close(); 
            } 
        } 
}

{"status":0,"result":{"location":{"lng":112.76535000506,"lat":22.754240005123},"formatted_address":"广东省佛山市高明区X492","business":"","addressComponent":{"city":"佛山市","country":"中国","direction":"","distance":"","district":"高明区","province":"广东省","street":"X492","street_number":"","country_code":0},"pois":[{"addr":"佛山市高明区","cp":"NavInfo","direction":"东北","distance":"680","name":"皂幕山泉","poiType":"公司企业","point":{"x":112.76102978437,"y":22.750226120112},"tag":"公司企业","tel":"","uid":"ea4a3dc9e82219534e5547fc","zip":""},{"addr":"四九二县道井头圩附近","cp":"NavInfo","direction":"东北","distance":"690","name":"乡下酒楼","poiType":"美食","point":{"x":112.76288029372,"y":22.748959622733},"tag":"美食;中餐厅","tel":"","uid":"b292b3aa9bf25c28be48422f","zip":""},{"addr":"四九二县道井头村附近","cp":"NavInfo","direction":"东北","distance":"724","name":"雄英酒楼","poiType":"美食","point":{"x":112.76211673404,"y":22.74900128402},"tag":"美食;中餐厅","tel":"","uid":"abe37f62d7e119b6cd04efd2","zip":""},{"addr":"四九二县道井头村附近","cp":"NavInfo","direction":"东北","distance":"730","name":"名峰酒楼","poiType":"美食","point":{"x":112.75995181776,"y":22.750776042908},"tag":"美食;中餐厅","tel":"","uid":"2fb890627b93c3a7c91b95e2","zip":""},{"addr":"杨和镇","cp":"NavInfo","direction":"东北","distance":"757","name":"山村菜馆","poiType":"美食","point":{"x":112.76165859823,"y":22.748934625955},"tag":"美食;中餐厅","tel":"","uid":"637df60ac6f49c7241afe68b","zip":""}],"poiRegions":[],"sematic_description":"皂幕山泉东北680米","cityCode":138}}