How to submit a Google Search query using Java

Question

I need to look for Goolge Places Pages by long / lat for any banks around 20 m. This Google Daces describes how to do this using JavaScript. They use the google.maps.LatLng object, which I do not have in Java.

Can anyone call the service now?

Maybe there is a Java API for Goolge Places?

Best regards, Christian.

Change 1:

I found someone creating such a URL:

 String url = baseUrl + "location=" + lat + "," + lon + "&" + "radius=" + searchRadius + "&" + types + "&" + "sensor=true" + "&" + "key=" + googleAPIKey; 

Answer: Edit 2:

Because of the post above, I learned how to do this. This is an example of how to send a request:

 public class GooglePlacesClient { private static final String GOOGLE_API_KEY = "***"; private final HttpClient client = new DefaultHttpClient(); public static void main(final String[] args) throws ParseException, IOException, URISyntaxException { new GooglePlacesClient().performSearch("establishment", 8.6668310, 50.1093060); } public void performSearch(final String types, final double lon, final double lat) throws ParseException, IOException, URISyntaxException { final URIBuilder builder = new URIBuilder().setScheme("https").setHost("maps.googleapis.com").setPath("/maps/api/place/search/json"); builder.addParameter("location", lat + "," + lon); builder.addParameter("radius", "5"); builder.addParameter("types", types); builder.addParameter("sensor", "true"); builder.addParameter("key", GooglePlacesClient.GOOGLE_API_KEY); final HttpUriRequest request = new HttpGet(builder.build()); final HttpResponse execute = this.client.execute(request); final String response = EntityUtils.toString(execute.getEntity()); System.out.println(response); } } 

Answer 1

Here's a more complete example (including JSON parsing and some exception handling) for searching, autocomplete, and details in the Places API. It was written for Android, but it can be easily ported for use not for Android (you must enable the org.json libraries and use different logging). The Place class is a simple value object.

 package com.example.google.places; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import android.util.Log; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL; import java.net.URLEncoder; import java.util.ArrayList; /** * @author saxman */ public class PlacesService { private static final String LOG_TAG = "ExampleApp"; private static final String PLACES_API_BASE = "https://maps.googleapis.com/maps/api/place"; private static final String TYPE_AUTOCOMPLETE = "/autocomplete"; private static final String TYPE_DETAILS = "/details"; private static final String TYPE_SEARCH = "/search"; private static final String OUT_JSON = "/json"; // KEY! private static final String API_KEY = "YOUR KEY"; public static ArrayList<Place> autocomplete(String input) { ArrayList<Place> resultList = null; HttpURLConnection conn = null; StringBuilder jsonResults = new StringBuilder(); try { StringBuilder sb = new StringBuilder(PLACES_API_BASE); sb.append(TYPE_AUTOCOMPLETE); sb.append(OUT_JSON); sb.append("?sensor=false"); sb.append("&key=" + API_KEY); sb.append("&input=" + URLEncoder.encode(input, "utf8")); URL url = new URL(sb.toString()); conn = (HttpURLConnection) url.openConnection(); InputStreamReader in = new InputStreamReader(conn.getInputStream()); int read; char[] buff = new char[1024]; while ((read = in.read(buff)) != -1) { jsonResults.append(buff, 0, read); } } catch (MalformedURLException e) { Log.e(LOG_TAG, "Error processing Places API URL", e); return resultList; } catch (IOException e) { Log.e(LOG_TAG, "Error connecting to Places API", e); return resultList; } finally { if (conn != null) { conn.disconnect(); } } try { // Create a JSON object hierarchy from the results JSONObject jsonObj = new JSONObject(jsonResults.toString()); JSONArray predsJsonArray = jsonObj.getJSONArray("predictions"); // Extract the Place descriptions from the results resultList = new ArrayList<Place>(predsJsonArray.length()); for (int i = 0; i < predsJsonArray.length(); i++) { Place place = new Place(); place.reference = predsJsonArray.getJSONObject(i).getString("reference"); place.name = predsJsonArray.getJSONObject(i).getString("description"); resultList.add(place); } } catch (JSONException e) { Log.e(LOG_TAG, "Error processing JSON results", e); } return resultList; } public static ArrayList<Place> search(String keyword, double lat, double lng, int radius) { ArrayList<Place> resultList = null; HttpURLConnection conn = null; StringBuilder jsonResults = new StringBuilder(); try { StringBuilder sb = new StringBuilder(PLACES_API_BASE); sb.append(TYPE_SEARCH); sb.append(OUT_JSON); sb.append("?sensor=false"); sb.append("&key=" + API_KEY); sb.append("&keyword=" + URLEncoder.encode(keyword, "utf8")); sb.append("&location=" + String.valueOf(lat) + "," + String.valueOf(lng)); sb.append("&radius=" + String.valueOf(radius)); URL url = new URL(sb.toString()); conn = (HttpURLConnection) url.openConnection(); InputStreamReader in = new InputStreamReader(conn.getInputStream()); int read; char[] buff = new char[1024]; while ((read = in.read(buff)) != -1) { jsonResults.append(buff, 0, read); } } catch (MalformedURLException e) { Log.e(LOG_TAG, "Error processing Places API URL", e); return resultList; } catch (IOException e) { Log.e(LOG_TAG, "Error connecting to Places API", e); return resultList; } finally { if (conn != null) { conn.disconnect(); } } try { // Create a JSON object hierarchy from the results JSONObject jsonObj = new JSONObject(jsonResults.toString()); JSONArray predsJsonArray = jsonObj.getJSONArray("results"); // Extract the Place descriptions from the results resultList = new ArrayList<Place>(predsJsonArray.length()); for (int i = 0; i < predsJsonArray.length(); i++) { Place place = new Place(); place.reference = predsJsonArray.getJSONObject(i).getString("reference"); place.name = predsJsonArray.getJSONObject(i).getString("name"); resultList.add(place); } } catch (JSONException e) { Log.e(LOG_TAG, "Error processing JSON results", e); } return resultList; } public static Place details(String reference) { HttpURLConnection conn = null; StringBuilder jsonResults = new StringBuilder(); try { StringBuilder sb = new StringBuilder(PLACES_API_BASE); sb.append(TYPE_DETAILS); sb.append(OUT_JSON); sb.append("?sensor=false"); sb.append("&key=" + API_KEY); sb.append("&reference=" + URLEncoder.encode(reference, "utf8")); URL url = new URL(sb.toString()); conn = (HttpURLConnection) url.openConnection(); InputStreamReader in = new InputStreamReader(conn.getInputStream()); // Load the results into a StringBuilder int read; char[] buff = new char[1024]; while ((read = in.read(buff)) != -1) { jsonResults.append(buff, 0, read); } } catch (MalformedURLException e) { Log.e(LOG_TAG, "Error processing Places API URL", e); return null; } catch (IOException e) { Log.e(LOG_TAG, "Error connecting to Places API", e); return null; } finally { if (conn != null) { conn.disconnect(); } } Place place = null; try { // Create a JSON object hierarchy from the results JSONObject jsonObj = new JSONObject(jsonResults.toString()).getJSONObject("result"); place = new Place(); place.icon = jsonObj.getString("icon"); place.name = jsonObj.getString("name"); place.formatted_address = jsonObj.getString("formatted_address"); if (jsonObj.has("formatted_phone_number")) { place.formatted_phone_number = jsonObj.getString("formatted_phone_number"); } } catch (JSONException e) { Log.e(LOG_TAG, "Error processing JSON results", e); } return place; } } 

Answer 2

The Java Library for working with the Google Places API is available on GitHub and Maven Central (disclosure: I'm a developer). Getting a list of places (or parts, photos, etc.) can be done in one or two lines. See the project page for examples and setting details.

https://github.com/pushbit/sprockets

Answer 3

There is no official Java library for the Google Places API. However, there are several projects on Github. Another: The Google Places API Library on Github