Java according to Baidu API to obtain latitude and longitude, and then according to latitude and longitude in obtaining city information

Original: http://www.open-open.com/code/view/1421032487812

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; /** * Get latitude and longitude * * @author jueyue return format:map<string,object> Map map.put ("status", * reader.nextstring ());//Status Map.put ("Re Sult ", list);//Query result * list<map<string,string>> * key: F247CDB592EB43EBAC6CCD27F796E2D2 */public class  Getlatandlngbybaidu {/** * @param addr * Query Address * @return * @throws IOException */Public        Object[] Getcoordinate (String addr) throws IOException {string lng = null;//Longitude string lat = null;//latitude         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 ();//Do not use proxy 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.subsequenc                    E (Data.indexof (":") +1, Data.indexof (","));//longitude count++; }else if (count==6) {lat = data.substring (Data.indexof (":") +1);//Latitude 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 G        Etlatandlngbybaidu ();        object[] o = Getlatandlngbybaidu.getcoordinate ("Tianfu Four Street, Chengdu"); System.out.println (o[0]);//Longitude System.out.println (o[1]);//Latitude}}

Output results: 104.04701

30.548397

Call the following path to get an address based on latitude and longitude, return data in JSON format,

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

return Result:

{"Status": 0, "result": {"location": {"LNG": 104.04701001273, "lat": 30.548396923974}, "Formatted_address": " Tianfu Four Street, Wuhou District, Chengdu City, Sichuan Province, "Business": "", "addresscomponent": {"City": "Chengdu", "District": "Wuhou", "Province": "Sichuan Province", "Street": "Tianfu four Street "," Street_number ":" "}," POIs ": [{" addr ":" Tianfu four Street, Wuhou District, Chengdu City, Sichuan Province "," CP ":" NavInfo "," Distance ":" 144 "," Name ":" Poly Heart Language Garden "," Poitype ":" Estate Community "," point ": {" x ": 104.04823889466," y ": 30.54874673449}," tel ":" "," UID ":" 881965b85a8d8a977369d348 "," Zip ":" "},{" addr ": Tianfu four Street, Wuhou District, Chengdu City, Sichuan Province", "CP": "NavInfo", "Distance": "629", "name": "Yi du international", "Poitype": "Estate Community", "point": {"x" : 104.05247889667, "y": 30.547152788724}, "tel": "", "UID": "e49f869c4f156be9c6effb6b", "Zip": "},{" addr ":" Jian nan da Dao, Wuhou District, Chengdu City, Sichuan Province, "CP": "NavInfo", "Distance": "881", "Name": "Plaza", "Poitype": "Estate Community", "point": {"x": 104.05252381195, "Y" : 30.553318490823}, "tel": "", "UID": "a2a7b0b167a0e1997adbd206", "Zip": "},{" addr ": De sai Three street, Wuhou District, Chengdu City, Sichuan Province", "CP": "NavInfo", " Distance ":" 989 "," name ":" Customer Parking "," Poitype ":" Traffic Facilities "," point ": {" x ": 104.04942465794," y ": 30.555798655385}," tel ":" "," UID ":" D135a6e15571911483a00cfe "," Zip ":" "}],"Citycode": 75}} 

Java according to Baidu API to obtain latitude and longitude, and then according to latitude and longitude in obtaining city information