import java.util.HashMap;
import java.util.Map;
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 net.sf.json.JSONObject;
public class LngAndLatUtil {
public static Map<String,Double> getLngAndLat(String address){
Map<String,Double> map=new HashMap<String, Double>();
String url = "http://api.map.baidu.com/geocoder/v2/?address="+address+"&output=json&ak=
你自己的ak值";
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!");
}
return map;
}
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();
}
}
把代码中的ak值(红色字部分)更改为你自己的ak值,在百度地图API中注册一下就有。
调用方式:
Map<String,Double> map=LngAndLatUtil.getLngAndLat("上海市黄浦区六合路");
System.out.println("经度:"+map.get("lng")+"---纬度:"+map.get("lat"));