Я знаю, что есть JavaScript API для преобразования адреса в координаты. Но есть ли такой API для Java?Java - Google Maps конвертирует адрес в координаторы
Прямо сейчас я вводил координаты вручную, но я хотел бы изменить это на стандартный адресный ввод и преобразовать адрес в координаты.
Спасибо заранее.
Лучшая библиотека с открытым исходным кодом для геолокации в Java теперь http://geo-google.sourceforge.net/index.html, основанный на API Google Maps (вам просто нужен ключ Google Maps API, чтобы использовать его)
Немногие другие варианты 1. http://jgeocoder.sourceforge.net/ 2. http://jgeocoder.svn.sourceforge.net/viewvc/jgeocoder/
Распакуйте файл в любую папку. Затем сделайте:
LookupService cl = new LookupService("/var/geolite/GeoLiteCity.dat",
LookupService.GEOIP_MEMORY_CACHE | LookupService.GEOIP_CHECK_CACHE);
Location location = cl.getLocation("some ip address");
Возможно, этот маленький два класса поможет
/*
* To change this template, choose Tools | Templates and open the template in
* the editor.
*/
package jt_webrequest;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
/**
*
* @author Held
*/
public class GetGeoInfos {
String straße_nr = "";
String plz_ort = "";
String land = "";
String address = "";
String latitude = "";
String longtitude = "";
String googleDoc = "";
Document xmlDoc = null;
String google_LocationType = "";
String google_Latitude = "";
String google_Longtitude = "";
String google_Hnr_lang = "";
String google_Hnr_kurz = "";
String google_Straße_lang = "";
String google_Straße_kurz = "";
String google_Ortsteil_lang = "";
String google_Ortsteil_kurz = "";
String google_Ort_lang = "";
String google_Ort_kurz = "";
String google_Level3_lang = "";
String google_Level3_kurz = "";
String google_Level2_lang = "";
String google_Level2_kurz = "";
String google_Level1_lang = "";
String google_Level1_kurz = "";
String google_Land_lang = "";
String google_Land_kurz = "";
String google_PLZ_lang = "";
String google_PLZ_kurz = "";
boolean statusIO = true; // Alles gut gelaufen ?
String errorText = "";// Fehlermeldung
String tmp = "";
public GetGeoInfos(String _straße_nr, String _plz_ort, String _land) {
// Ermitteln der Geodaten zu einer gegebenen Adresse
PostRequest postRequest = new PostRequest();
straße_nr = _straße_nr;
plz_ort = _plz_ort;
land = _land;
address = straße_nr + "," + plz_ort + "," + land;
// System.out.println("GET_GEO_INOS - ADRESS ->" + address);
}
public GetGeoInfos(String _latitude, String _longtitude) {
// Ermitteln der Geodaten zu einer gegebenen Adresse
latitude = _latitude;
longtitude = _longtitude;
}
public GetGeoInfos(String _address) {
// Ermitteln der Geodaten zu einer gegebenen Adresse
address = _address;
// System.out.println("GET_GEO_INOS - ADRESS ->" + address);
}
public boolean doGetInfosfromAdress() {
if (getGeoInfosGoogle(address) == true) {
if (getGoogleValues() == false) {
// Fehler beim Werte auselsen
statusIO = false;
} else {
// Alles io
statusIO = true;
}
} else {
// FEHLER beim Request
statusIO = false;
}
return statusIO;
}
public boolean doGetInfosfromLangLant() {
if (getGeoInfosGoogle(latitude, longtitude) == true) {
if (getGoogleValues() == false) {
// Fehler beim Werte auselsen
statusIO = false;
} else {
// Alles io
statusIO = true;
}
} else {
// FEHLER beim Request
statusIO = false;
}
return statusIO;
}
private boolean getGeoInfosGoogle(String _latitude, String _longtitude) {
boolean keinTreffer = false;
GetRequest getRequest = new GetRequest();
getRequest.setURL("http://maps.googleapis.com/maps/api/geocode/xml");
getRequest.putData("latlng", _latitude + "," + _longtitude);
getRequest.putData("sensor", "false");
try {
getRequest.doSubmit();
String inputLine = "";
while (true) {
inputLine = getRequest.getLine();
// Kein Treffer abbrechen
if (inputLine.indexOf("ZERO_RESULTS") > -1) {
keinTreffer = true;
}
if (inputLine.equals("NULL")
== false) {
googleDoc = googleDoc + inputLine + "\r\n";
} else {
break;
}
}
Writer writer = new StringWriter();
writer.write(googleDoc);
//String result = writer.toString();
//System.out.println(result.toString());
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(writer.toString().trim()));
xmlDoc = db.parse(is);
if (keinTreffer == true) {
return false;
} else {
return true;
}
} catch (Exception ex) {
Logger.getLogger(Jt_WebRequest.class.getName()).log(Level.SEVERE,
null, ex);
statusIO = false;
errorText = "getGeoInfosGoogle:\r\n\r\n" + errorText + ex.getMessage().toString() + "\r\n\r\n";
return false;
}
}
private boolean getGeoInfosGoogle(String _address) {
boolean keinTreffer = false;
GetRequest getRequest = new GetRequest();
getRequest.setURL("http://maps.googleapis.com/maps/api/geocode/xml");
getRequest.putData("address", _address);
getRequest.putData("sensor", "false");
try {
getRequest.doSubmit();
String inputLine = "";
while (true) {
inputLine = getRequest.getLine();
if (inputLine.indexOf("ZERO_RESULTS") > -1) {
keinTreffer = true;
}
if (inputLine.equals("NULL")
== false) {
googleDoc = googleDoc + inputLine + "\r\n";
} else {
break;
}
}
Writer writer = new StringWriter();
writer.write(googleDoc);
String result = writer.toString();
//System.out.println(result.toString());
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(writer.toString().trim()));
xmlDoc = db.parse(is);
if (keinTreffer == true) {
return false;
} else {
return true;
}
} catch (Exception ex) {
Logger.getLogger(Jt_WebRequest.class.getName()).log(Level.SEVERE,
null, ex);
statusIO = false;
errorText = "getGeoInfosGoogle:\r\n\r\n" + errorText + ex.getMessage().toString() + "\r\n\r\n";
return false;
}
}
public boolean getGoogleValues() {
try {
get_Latitude();
get_Longtitude();
get_LocationTpe();
get_AddressComponent();
return true;
} catch (XPathExpressionException ex) {
Logger.getLogger(GetGeoInfos.class.getName()).log(Level.SEVERE, null, ex);
statusIO = false;
errorText = "getGoogleValues:\r\n\r\n" + errorText + ex.getMessage().toString() + "\r\n\r\n";
return false;
}
}
private void get_Latitude() throws XPathExpressionException {
google_Latitude = getXpathValue(xmlDoc, "//GeocodeResponse/result/geometry/location/lat/text()");
}
private void get_Longtitude() throws XPathExpressionException {
google_Longtitude = getXpathValue(xmlDoc, "//GeocodeResponse/result/geometry/location/lng/text()");
}
private void get_LocationTpe() throws XPathExpressionException {
google_LocationType = getXpathValue(xmlDoc, "//GeocodeResponse/result/geometry/location_type/text()");
}
private void get_AddressComponent() throws XPathExpressionException {
for (int i = 0; i <= getXpathCount(xmlDoc, "//GeocodeResponse/result/address_component"); i++) {
getXpathAddressComponentValues(xmlDoc, "//GeocodeResponse/result/address_component[" + i + "]/*/text()");
}
}
private void getXpathAddressComponentValues(Document doc, String strXpath) throws XPathExpressionException {
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression exprNodeName = xPath.compile(strXpath);
String resultData = null;
String long_name = "";
String short_name = "";
String type = "";
Object result4 = exprNodeName.evaluate(doc, XPathConstants.NODESET);
NodeList nodes = (NodeList) result4;
int x = 0;
for (int i = 0; i < nodes.getLength(); i++) {
x = x + 1;
resultData = nodes.item(i).getNodeValue();
if (x == 1) {
long_name = resultData;
}
if (x == 2) {
short_name = resultData;
}
if (x == 3) {
type = resultData;
}
}
mapAdressComponentValues(type, long_name, short_name);
}
public void mapAdressComponentValues(String _type, String _long_name, String _short_name) {
if (_type.equals("street_number") == true) {
google_Hnr_lang = _long_name;
google_Hnr_kurz = _short_name;
}
if (_type.equals("route") == true) {
google_Straße_lang = _long_name;
google_Straße_kurz = _short_name;
}
if (_type.equals("sublocality") == true) {
google_Ortsteil_lang = _long_name;
google_Ortsteil_kurz = _short_name;
}
if (_type.equals("locality") == true) {
google_Ort_lang = _long_name;
google_Ort_kurz = _short_name;
}
if (_type.equals("administrative_area_level_3") == true) {
google_Level3_lang = _long_name;
google_Level3_kurz = _short_name;
}
if (_type.equals("administrative_area_level_2") == true) {
google_Level2_lang = _long_name;
google_Level2_kurz = _short_name;
}
if (_type.equals("administrative_area_level_1") == true) {
google_Level1_lang = _long_name;
google_Level1_kurz = _short_name;
}
if (_type.equals("country") == true) {
google_Land_lang = _long_name;
google_Land_kurz = _short_name;
}
if (_type.equals("postal_code") == true) {
google_PLZ_lang = _long_name;
google_PLZ_kurz = _short_name;
}
}
private int getXpathCount(Document doc, String strXpath) throws XPathExpressionException {
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xPath.compile(strXpath);
String resultData = null;
Object result4 = expr.evaluate(doc, XPathConstants.NODESET);
NodeList nodes = (NodeList) result4;
return nodes.getLength();
}
private String getXpathValue(Document doc, String strXpath) throws XPathExpressionException {
XPath xPath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xPath.compile(strXpath);
String resultData = null;
Object result4 = expr.evaluate(doc, XPathConstants.NODESET);
NodeList nodes = (NodeList) result4;
for (int i = 0; i < nodes.getLength(); i++) {
resultData = nodes.item(i).getNodeValue();
}
return resultData;
}
public boolean getStatusIO() {
return statusIO;
}
public String getErrorText() {
return errorText;
}
public String get_Google_Longtitude() {
return google_Longtitude;
}
public String get_Google_Latitude() {
return google_Latitude;
}
public String get_Google_LocationType() {
return google_LocationType;
}
public String get_Google_Hnr_lang() {
return google_Hnr_lang;
}
public String get_Google_Hnr_kurz() {
return google_Hnr_kurz;
}
public String get_Google_Straße_lang() {
return google_Straße_lang;
}
public String get_Google_Straße_kurz() {
return google_Straße_kurz;
}
public String get_Google_Ortsteil_lang() {
return google_Ortsteil_lang;
}
public String get_Google_Ortsteil_kurz() {
return google_Ortsteil_kurz;
}
public String get_Google_Ort_lang() {
return google_Ort_lang;
}
public String get_Google_Ort_kurz() {
return google_Ort_kurz;
}
public String get_Google_Level3_lang() {
return google_Level3_lang;
}
public String get_Google_Level3_kurz() {
return google_Level3_kurz;
}
public String get_Google_Level2_lang() {
return google_Level2_lang;
}
public String get_Google_Level2_kurz() {
return google_Level2_kurz;
}
public String get_Google_Level1_lang() {
return google_Level1_lang;
}
public String get_Google_Level1_kurz() {
return google_Level1_kurz;
}
public String get_Google_Land_lang() {
return google_Land_lang;
}
public String get_Google_Land_kurz() {
return google_Land_kurz;
}
public String get_Google_PLZ_lang() {
return google_PLZ_lang;
}
public String get_Google_PLZ_kurz() {
return google_PLZ_kurz;
}
}
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package jt_webrequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLEncoder;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
*
* @author Held
*/
public class GetRequest {
String content = "";
String urlString = "";
BufferedReader in = null;
public void putData(String _key, String _value) {
try {
if (content.equals("") == true) {
content = content + URLEncoder.encode(_key, "UTF-8") + "=" + URLEncoder.encode(_value, "UTF-8");
} else {
content = content + "&" + URLEncoder.encode(_key, "UTF-8") + "=" + URLEncoder.encode(_value, "UTF-8");
}
} catch (UnsupportedEncodingException ex) {
Logger.getLogger(GetRequest.class.getName()).log(Level.SEVERE, null, ex);
}
}
public void setURL(String _value) {
urlString = _value;
}
public void doSubmit() {
try {
// Make connection
URL url = new URL(urlString + "?"+content);
// System.out.println("GET" +" - " + url.toString());
URLConnection urlConnection = url.openConnection();
// Read the response
in = new BufferedReader(
new InputStreamReader(urlConnection.getInputStream()));
} catch (Exception e) {
}
}
public String getLine() throws IOException {
String line;
line = in.readLine();
if (line != null) {
return line;
} else {
in.close();
return "NULL";
}
}
}
Вы должны использовать геокодирования службы путем построения URL, извлекать и анализировать реакцию. Вот урок по parse JSON in Java with geocoding as example.