獲取某地的經緯度 && 通過經緯度獲取相應的地理位置
最近要通過一個經緯度判斷該經緯度是否位于某個地區內，所以通過網上查找資料，整合后出了下面的內容。
1、通過地址獲取改地址的經緯度
/**
- @param addr
- 查詢的地址
- @return
- @throws IOException
*/
public Object[] getCoordinate(String addr) throws IOException {
String lng = null;//經度
String lat = null;//緯度
String address = null;
try {
address = java.net.URLEncoder.encode(addr, "UTF-8");
}catch (UnsupportedEncodingException e1) {
e1.printStackTrace();
}
String key = "f247cdb592eb43ebac6ccd27f796e2d2";
String url = String .format("
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(","));//經度 count++; }else if(count==6){ lat = data.substring(data.indexOf(":")+1);//緯度 count++; }else{ count++; } }} } catch (IOException e) { e.printStackTrace(); } finally { if(insr!=null){
} if(br!=null){insr.close();
} } return new Object[]{lng,lat}; } </pre>br.close();
測試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]);//經度 System.out.println(o[1]);//緯度 }
結果:
104.063832 30.54855
2、通過某個經緯度獲取該經緯度的地址 ，返回的是一個json格式的對象（需要引入json.org.jar包的JSONObject類進行解析），這里只實現了通過經緯度查詢出該經緯度所在的市，其他信息再json中都有，只需通過解析即可得出，這里不給出其他信息的獲取方式。
public static void getCityFromLngAndlat() { //通過修改這里的location（經緯度）參數，即可得到相應經緯度的詳細信息 String url2 = "} catch (MalformedURLException e) {myURL2 = new URL(url2);
} InputStreamReader insr2 = null; BufferedReader br2 = null; try {e.printStackTrace();
} catch (IOException e) {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格式數據 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(); } }
} finally {e.printStackTrace();
} }</pre>if(insr2!=null){ insr2.close(); } if(br!=null){ br2.close(); }
獲取到的json原始數據如下{"status":0,"result":{"location":{"lng":112.76535000506,"lat":22.754240005123},"formatted_address":"廣東省佛山市高明區X492","business":"","addressComponent":{"city":"佛山市","country":"中國","direction":"","distance":"","district":"高明區","province":"廣東省","street":"X492","street_number":"","country_code":0},"pois":[{"addr":"佛山市高明區","cp":"NavInfo","direction":"東北","distance":"680","name":"皂幕山泉","poiType":"公司企業","point":{"x":112.76102978437,"y":22.750226120112},"tag":"公司企業","tel":"","uid":"ea4a3dc9e82219534e5547fc","zip":""},{"addr":"四九二縣道井頭圩附近","cp":"NavInfo","direction":"東北","distance":"690","name":"鄉下酒樓","poiType":"美食","point":{"x":112.76288029372,"y":22.748959622733},"tag":"美食;中餐廳","tel":"","uid":"b292b3aa9bf25c28be48422f","zip":""},{"addr":"四九二縣道井頭村附近","cp":"NavInfo","direction":"東北","distance":"724","name":"雄英酒樓","poiType":"美食","point":{"x":112.76211673404,"y":22.74900128402},"tag":"美食;中餐廳","tel":"","uid":"abe37f62d7e119b6cd04efd2","zip":""},{"addr":"四九二縣道井頭村附近","cp":"NavInfo","direction":"東北","distance":"730","name":"名峰酒樓","poiType":"美食","point":{"x":112.75995181776,"y":22.750776042908},"tag":"美食;中餐廳","tel":"","uid":"2fb890627b93c3a7c91b95e2","zip":""},{"addr":"楊和鎮","cp":"NavInfo","direction":"東北","distance":"757","name":"山村菜館","poiType":"美食","point":{"x":112.76165859823,"y":22.748934625955},"tag":"美食;中餐廳","tel":"","uid":"637df60ac6f49c7241afe68b","zip":""}],"poiRegions":[],"sematic_description":"皂幕山泉東北680米","cityCode":138}}
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