LWUIT pilot bee map development example: IP address query

You can query the geographical longitude and latitude coordinates of an IP address based on the IP address. For example, in the following example, the IP address 58.192.32.1 is located at 118.777802 and 32.061699, which is the location of Nanjing University.

[Java]
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 actionreceivmed (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. longpolling. length ()> 0
& Result. latitude. length ()> 0 ){
Try {

MapPoint mapPoint = new MapPoint ();
String latLng = "[" + result. longpolling + ","
+ 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 ";
}
}
}
}

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 actionreceivmed (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. longpolling. length ()> 0
& Result. latitude. length ()> 0 ){
Try {
 
MapPoint mapPoint = new MapPoint ();
String latLng = "[" + result. longpolling + ","
+ 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 ";
}
}
}
}
Note: currently, IP address query results are always returned in English, as detailed in the preceding results.
ISP: "China Education and Research Network"
Organization: "Nan Jing University"
Country: "CN"
City: "Nanjing"
If you want to know the geographic name corresponding to the longitude and latitude, you can use the address anti-encoding service.
You can enter 127.0.0.1 to query the local address.

Author: mapdigit