Retrieve Coordinates from google maps api
I have a list of addresses, i now want to retrieve their longitudes and latitudes. i would like to use the google maps api through java. How would i go about retrieving just one set of co-ords for one address. (cause i could then easily imp开发者_如何学运维lement for multiple)
You may also use the Google Geocoder Java API GeoGoogle like this:
// Initialize a new GeoAddressStandardizer-class with your API-Key
GeoAddressStandardizer st = new GeoAddressStandardizer(apikey);
// Get a list of possible matching addresses
List<GeoAddress> addresses = st.standardizeToGeoAddresses(address);
// Get the first address (like you posted above)
GeoAddress address = addresses.get(0);
// Get the coordinates for the address
GeoCoordinate coords = address.getCoordinate();
// Longitude
double longitude = coords.getLongitude();
// Latitude
double latitude = coords.getLatitude();
You can use this Google API
This is how i did it in the end
public static String getCordinates(String address,String county) throws IOException, ParserConfigurationException, SAXException{
String thisLine;
address = address.replace(",", "+");
address = address.replace(" ", "+");
county = county.replace(" ", "");
String fullAddress = address+"+"+county;
System.out.println(fullAddress);
URL url = new URL("http://maps.google.com/maps/geo?q="+fullAddress+"&output=xml&key=ABQIAAAANGTAqDyDam_07aWkklK2NBSD41w" +
"X8VhCBpuiDVjGbFNuXE31lhQB8Gkwy-wmYbmaHIbJtfnlR9I_9A");
BufferedReader theHTML = new BufferedReader(new InputStreamReader(url.openStream()));
FileWriter fstream = new FileWriter("url.xml");
BufferedWriter out = new BufferedWriter(fstream);
while ((thisLine = theHTML.readLine()) != null)
out.write(thisLine);
out.close();
File file = new File("url.xml");
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(file);
doc.getDocumentElement().normalize();
NodeList nl = doc.getElementsByTagName("code");
Element n = (Element)nl.item(0);
String st = n.getFirstChild().getNodeValue();
if (st.equals("200"))
{
NodeList n2 = doc.getElementsByTagName("coordinates");
Element nn = (Element)n2.item(0);
String st1 = nn.getFirstChild().getNodeValue();
return st1;
}
else
{
return null;
}
}
Using API with restAssurd is an easy way:
public static String[] getCoordinates(String address, String county) throws IOException, ParserConfigurationException, SAXException {
address = address.replace(",", "+");
address = address.replace(" ", "+");
county = county.replace(" ", "");
String fullAddress = address+"+"+county;
System.out.println(fullAddress);
URL url = new URL("http://maps.google.com/maps/api/geocode/json?address="+fullAddress+"&sensor=false");
Response res = given().
when().
get(url);
JsonPath jp = new JsonPath(res.asString());
String lat = jp.get("results.geometry.location.lat").toString();
String lng = jp.get("results.geometry.location.lng").toString();
String[] location = new String[2];
location[0] = lat;
location[1] = lng;
return location;
}
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