Google Elevation API提供了根据某地经纬度获取该地点海拔高度的接口。开发者可以调用该API获取地点的海拔信息。使用Google Elevation API之前,用户首先需要注册为Google Developer,获取API key。
开发者可以查看API的调用记录,目前Elevation API的限制次数为2500次/每天,每次API访问的字节数小于2000字符。
相应的Java代码如下所示:
package elevation;import java.io.*;import java.net.*;import javax.xml.parsers.ParserConfigurationException;import org.xml.sax.SAXException;/** * * @author yfeng14 */public class Elevation {/*** @param args the command line arguments*/public static void main(String[] args) {// TODO code application logic hereStringBuffer document = new StringBuffer();try {//Elevation API URLs are restricted to approximately 2000 charactersBufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));String line = null;while ((line = reader.readLine()) != null) {if (line.startsWith(" <elevation>")) {line = line.replaceAll(" <elevation>", "");line = line.replaceAll("</elevation>", "");document.append(line + " ");System.out.println(line);}}reader.close();} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}String xml = document.toString();//返回值System.out.print(xml);}}
,爱情不是避难所,想进去避难的话,是会被赶出来的。