如何获取给定城市或地址名称的纬度和经度（java代码）？

Question

I want to get latitude and longitude from a city name in java project(eclipse) with GoogleMaps. I tried with this code but I find multiple errors. I think because it is for Android. I wonder if you can help me??

public boolean getLatitudeAndLongitudeFromGoogleMapForAddress(String searchedAddress){

    Geocoder coder = new Geocoder(IPlant.iPlantActivity);
    List<Address> address;
    try 
    {
        address = coder.getFromLocationName(searchedAddress,5);
        if (address == null) {
            Log.d(TAG, "############Address not correct #########");
        }
        Address location = address.get(0);

        Log.d(TAG, "Address Latitude : "+ location.getLatitude();+ "Address Longitude : "+ location.getLongitude());
        return true;

    }
    catch(Exception e)
    {
        Log.d(TAG, "MY_ERROR : ############Address Not Found");
        return false;
    }
}

Answer 1

The code you've posted is indeed for Android as it's using Android's Geocoder class .

If you're trying to geocode addresses server-side in a web application, then you should use the client libraries for web services instead. The Java client can be found here and it provides the following code example for Geocoding API:

GeoApiContext context = new GeoApiContext.Builder()
    .apiKey("AIza...")
    .build();
GeocodingResult[] results =  GeocodingApi.geocode(context,
    "1600 Amphitheatre Parkway Mountain View, CA 94043").await();
Gson gson = new GsonBuilder().setPrettyPrinting().create();
System.out.println(gson.toJson(results[0].addressComponents));

Note that you'll need a valid API key; I recommend you go through Google's get started guide .

Hope this helps you.