Java利用CellID LAC调用Google接口获取经纬度例子

http://code.google.com/intl/zh-CN/apis/gears/geolocation_network_protocol.html

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代码中是用GSM查询格式，如果是CDMA查询和GSM查询格式是一样的，只是需要修改4个地方:
1.radio_type 改为 “cdma”
2.cell_id 用 BID值替换
3.location_area_code用NID值替换
4.mobile_network_code用SID值替换

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import java.io.BufferedReader;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;/** * Java利用CellID LAC调用Google接口获取经纬度例子 */public class GoogleJson {public static void main(String args[]) {GoogleJson test = new GoogleJson();URL url = null;HttpURLConnection conn = null;try {url = new URL("http://www.google.com/loc/json");conn = (HttpURLConnection) url.openConnection();conn.setDoOutput(true);conn.setRequestMethod("POST");String json = test.getJson();System.out.println(json);conn.getOutputStream().write(json.getBytes());conn.getOutputStream().flush();conn.getOutputStream().close();int code = conn.getResponseCode();System.out.println("code " + code);BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));String inputLine;inputLine = in.readLine();System.out.println(inputLine);in.close();// 解析结果// JSONObject result = new JSONObject(inputLine);// JSONObject location = result.getJSONObject("location");// JSONObject address = location.getJSONObject("address");// System.out.println("city = " + address.getString("city"));// System.out.println("region = " + address.getString("region"));} catch (Exception e) {e.printStackTrace();} finally {if (conn != null)conn.disconnect();}}/** * Google的官方例子 */private String getJson() {String json = "{ "+ "\"version\": \"1.1.0\", "+ "\"host\": \"maps.google.com\", "// +// "\"access_token\": \"2:k7j3G6LaL6u_lafw:4iXOeOpTh1glSXe\", "+ "\"home_mobile_country_code\": 460, "+ "\"home_mobile_network_code\": 00, "+ "\"radio_type\": \"gsm\", "+ "\"carrier\": \"Vodafone\", "+ "\"request_address\": true, "+ "\"address_language\": \"zh_CN\", "// + "\"location\": { "// + "\"latitude\": 51.0, " + "\"longitude\": -0.1 " + "}, "+ "\"cell_towers\": [ "+ "{ "+ "\"cell_id\": 4912, "+ "\"location_area_code\": 20516, "+ "\"mobile_country_code\": 460, "+ "\"mobile_network_code\": 00, "+ "\"age\": 0, "+ "\"signal_strength\": -60, "+ "\"timing_advance\": 5555 "+ "}"// +", " + "{ " + "\"cell_id\": 88, "// + "\"location_area_code\": 415, "// + "\"mobile_country_code\": 310, "// + "\"mobile_network_code\": 580, " + "\"age\": 0, "// + "\"signal_strength\": -70, " + "\"timing_advance\": 7777 "// + "}"+ "]" //+", " + "\"wifi_towers\": [ " + "{ "//+ "\"mac_address\": \"00:18:39:f4:29:01\", "//+ "\"signal_strength\": 8, " + "\"age\": 0 " + " }"//// ", " + "{ "//// + " \"mac_address\": \"01-23-45-67-89-ac\", "//// + " \"signal_strength\": 4, " + " \"age\": 0 " + "}"//+ "] "+ "}";return json;}}

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