JAVA调用企业接口返回JSON

package test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
/**
* @author xizhenqi
* @date:2017-3-2 下午5:17:26 
*/
public class testRebackJson {
    /**
     * @param args[size=x-small][/size]
     */
    public static void main(String[] args) {
    //外接口路径 
        String stringUrl = "http://api.geonames.org/citiesJSON?north=44.1&south=-9.9&east=-22.4&west=55.2&lang=de&username=demo";
        String json = loadJSON(stringUrl);
        System.out.println(json);
    }

    public static String loadJSON (String stringUrl) {
    //返回结果集 
        StringBuilder document = new StringBuilder();
        try {
        //链接URL 
            URL url = new URL(stringUrl);
            //创建链接 
            URLConnection conn = url.openConnection();
            //读取返回结果集 
            BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
           
            String inputLine = null;
           
            while ( (inputLine = in.readLine()) != null) {
           
            document.append(inputLine);
            }
            in.close();
        } catch (MalformedURLException e) {
        } catch (IOException e) {
        }
        return document.toString();
    }
}