好多情况我们需要把一个地方的经纬度存到数据库，也就是根据地址通过GoogleMap查询出来其对应的经纬度。
public static double[] getCoordinate(String addr) {
double[] latLng = new double[2];
String address = null;
try {
address = java.net.URLEncoder.encode(addr,"utf-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
String url = "http://maps.googleapis.com/maps/api/geocode/json?address=" + addr;
URL googleMapURL = null;
HttpURLConnection httpConn = null;
//进行转码
try {
googleMapURL = new URL(url);
} catch (MalformedURLException e) {
e.printStackTrace();
}
try {
httpConn = (HttpURLConnection)googleMapURL.openConnection(new Proxy(Proxy.Type.SOCKS,new InetSocketAddress("127.0.0.1",1080))); //这里是通过代理访问，根据自己的需要进行修改
httpConn.setRequestMethod("GET"); //设置请求方法
googleMapURL.openConnection().setDoOutput(true);//返回此 URLConnection 的 doOutput 标志的值
if (httpConn != null) {
InputStreamReader insr = new InputStreamReader(httpConn.getInputStream(),"utf-8");
BufferedReader br = new BufferedReader(insr);
StringBuffer sb = new StringBuffer();
String temp;
while ((temp = br.readLine()) != null) {
temp = temp.trim();
if (temp !=null && temp.length()>0) {
sb.append(temp);
}
}
br.close();
insr.close();
JSONObject llInfo = new JSONObject(sb.toString());//引入org.json jar包
String status = llInfo.getString("status");
if ("OK".equals(status)) {
JSONArray results = llInfo.getJSONArray("results");
for (int i = 0; i<results.length(); i++) {
JSONObject llDetails = results.getJSONObject(i);
JSONObject loc= llDetails.getJSONObject("geometry").getJSONObject("location");
double y = loc.getDouble("lat");
double x = loc.getDouble("lng");
latLng[0] = x;
latLng[1] = y;
}
}
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("经纬度解析失败");
}
return latLng;
}