package org.hanghao.utils;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONObject;
/**
* 通过百度地图API获取地址经纬度
* @author Long Tanglin
* @since 2017-5-8 09:24:15
*/
public class LngAndLatUtil {
public static String loadJSON(String url) {
StringBuilder json = new StringBuilder();
try {
URL oracle = new URL(url);
URLConnection yc = oracle.openConnection();
BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream()));
String inputLine = null;
while ((inputLine = in.readLine()) != null) {
json.append(inputLine);
}
in.close();
} catch (MalformedURLException e) {
} catch (IOException e) {
}
return json.toString();
}

public static Map<String, Double> getLngAndLat(String address) throws Exception {
Map<String, Double> map = new HashMap<String, Double>();
String url = "http://api.map.baidu.com/geocoder/v2/?address=" + address
+ "&output=json&ak=5bSX6lqF6irleeYplWXQVTFYz4tgw2Is";
String json = loadJSON(url);
JSONObject obj = JSONObject.fromObject(json);
if (obj.get("status").toString().equals("0")) {
double lng = obj.getJSONObject("result").getJSONObject("location").getDouble("lng");
double lat = obj.getJSONObject("result").getJSONObject("location").getDouble("lat");
map.put("lng", lng);
map.put("lat", lat);
System.out.println("经度：" + lng + "---纬度：" + lat);
} else {
System.out.println("未找到相匹配的经纬度！");
throw new Exception();
}
return map;
}

public static void main(String[] args) throws Exception {

//经度：104.11990831333591---纬度：30.69755718802188
getLngAndLat("成都东站");
}

}