LWUIT引路蜂地图开发示例：IP地址查询

IP地址查询，可以根据IP地址查询到该IP所在的地理经纬度坐标，比如下述例子查询IP 地址58.192.32.1，所在经纬度为118.777802,32.061699，为南京大学所在地。

package com.pstreets.gisengine.demo.lwuit;   //--------------------------------- IMPORTS ------------------------------------   import com.mapdigit.gis.DigitalMap; import com.mapdigit.gis.MapPoint;   import com.mapdigit.gis.geometry.GeoLatLng; import com.mapdigit.gis.raster.MapType; import com.mapdigit.gis.service.IIpAddressGeocodingListener;   import com.mapdigit.gis.service.IpAddressLocation; import com.pstreets.gisengine.demo.MapDemoLWUIT; import com.sun.lwuit.Command; import com.sun.lwuit.events.ActionEvent;   public class MapIpSearchLWUIT extends MapDemoLWUIT         implements IIpAddressGeocodingListener{       private Command mapFindAddressCommand;       public void startApp() {         init();         canvas.setTitle("IP Search");           mapFindAddressCommand=new Command("Find Address"){             public void actionPerformed(ActionEvent evt) {                  map.getIpLocations("58.192.32.1");               }         };         canvas.addCommand(mapFindAddressCommand);         GeoLatLng center =  new GeoLatLng(32.0616667, 118.7777778);         map.setCenter(center, 13, MapType.MICROSOFTCHINA);         map.setIpAddressGeocodingListener(this);           canvas.show();     }       public void done(String query, IpAddressLocation result) {         if (result != null && result.error.length() == 0                && result.longitude.length() > 0                && result.latitude.length() > 0) {             try {                   MapPoint mapPoint = new MapPoint();                 String latLng = "[" + result.longitude + ","                        + result.latitude + ",0]";                 mapPoint.point = DigitalMap.fromStringToLatLng(latLng);                 mapPoint.setName(result.organization);                 mapPoint.setNote(result.city + " " + result.country);                 map.panTo(mapPoint.point);             } catch (Exception e) {                   result.error = "IP_NOT_FOUND";             }         }     } }

注：目前IP查询结果总是以英文返回，如上述结果详细内容。
ISP：”China Education and Research Network”
Organization: “Nan Jing University”
Country: “CN”
City: “Nanjing”
若想知道该经纬度对应的地名，可以使用地址反编码服务。
你可以输入 127.0.0.1 查询本机地址。

LWUIT 引路蜂地图开发包Ver2.1下载