From c498c14727a90539c008f7b05185a62d6ee6512e Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Wed, 20 Jun 2012 23:19:03 +0400 Subject: Add reverse geocoding --- src/org/traccar/geocode/GoogleReverseGeocoder.java | 60 ++++++++++++++++++++++ src/org/traccar/geocode/ReverseGeocoder.java | 28 ++++++++++ 2 files changed, 88 insertions(+) create mode 100644 src/org/traccar/geocode/GoogleReverseGeocoder.java create mode 100644 src/org/traccar/geocode/ReverseGeocoder.java (limited to 'src') diff --git a/src/org/traccar/geocode/GoogleReverseGeocoder.java b/src/org/traccar/geocode/GoogleReverseGeocoder.java new file mode 100644 index 000000000..724c60e50 --- /dev/null +++ b/src/org/traccar/geocode/GoogleReverseGeocoder.java @@ -0,0 +1,60 @@ +/* + * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.geocode; + +import java.io.BufferedReader; +import java.io.InputStreamReader; +import java.net.URL; +import java.net.URLConnection; +import org.traccar.helper.Log; + +/** + * Reverse geocoder implementation using Google + */ +public class GoogleReverseGeocoder implements ReverseGeocoder { + + private final static String MARKER = "\"formatted_address\" : \""; + + /** + * Get address string by coordinates + */ + public String getAddress(double latitude, double longitude) { + + try { + URL url = new URL("http://maps.googleapis.com/maps/api/geocode/json?latlng=" + latitude + "," + longitude + "&sensor=false"); + URLConnection connection = url.openConnection(); + BufferedReader reader = new BufferedReader( + new InputStreamReader(connection.getInputStream())); + + // Find address line + String line; + while ((line = reader.readLine()) != null) { + int index = line.indexOf(MARKER); + if (index != -1) { + return line.substring(index + MARKER.length(), line.length() - 2); + } + } + + reader.close(); + + } catch(Exception error) { + Log.warning(error.getMessage()); + } + + return null; + } + +} diff --git a/src/org/traccar/geocode/ReverseGeocoder.java b/src/org/traccar/geocode/ReverseGeocoder.java new file mode 100644 index 000000000..d8ea5d7ab --- /dev/null +++ b/src/org/traccar/geocode/ReverseGeocoder.java @@ -0,0 +1,28 @@ +/* + * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.geocode; + +/** + * Reverse geocoder interface + */ +public interface ReverseGeocoder { + + /** + * Get address string by coordinates + */ + public String getAddress(double latitude, double longitude); + +} -- cgit v1.2.3