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