Java acquisition area based on IP (Taobao Interface)

package com.ffcs.icity.api.module.util.ipip;

import net.sf.json.JSONObject;

import java.net.MalformedURLException;
import java.io.*;
import java.net.*;

public class IpUtils {

    public static void main(String[] args){
        String resout = "";
        try{
            String str = getJsonContent("http://ip.taobao.com/service/getIpInfo.php?ip="+"123.147.246.199");
            System.out.println(str);
            JSONObject obj = JSONObject.fromObject(str);
            JSONObject obj2 =  (JSONObject) obj.get("data");
            String code = (String) obj.get("code");
            if(code.equals("0")){
                resout =  obj2.get("country")+"--" +obj2.get("area")+"--" +obj2.get("city")+"--" +obj2.get("isp");
            }else{
                resout =  "IP地址有误";
            }
        }catch(Exception e){
            e.printStackTrace();
            resout = "获取IP地址异常："+e.getMessage();
        }
        System.out.println("result: " + resout);
    }

    public static String getJsonContent(String urlStr) {
        try{
            // 获取HttpURLConnection连接对象
            URL url = new URL(urlStr);
            HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
            // set the connection properties
            httpConn.setConnectTimeout(3000);
            httpConn.setDoInput(true);
            httpConn.setRequestMethod("GET");
            httpConn.setRequestProperty("Charset", "utf-8");
            // 获取相应码
            int respCode = httpConn.getResponseCode();
            if (respCode == 200){
                return ConvertStream2Json(httpConn.getInputStream());
            }
        }
        catch (MalformedURLException e){
            e.printStackTrace();
        }
        catch (IOException e){
            e.printStackTrace();
        }
        return "";
    }

    ConvertStream2Json static String Private (inputStream the InputStream) { 
        String = jsonStr ""; 
        // ByteArrayOutputStream memory corresponding to the output stream 
        OUT = ByteArrayOutputStream ByteArrayOutputStream new new (); 
        byte [] Buffer = new new byte [1024]; 
        int len = 0; 
        // will input flow to a memory output stream 
        the try { 
            the while ((len = InputStream.read (Buffer, 0, buffer.length)) = -1!) { 
                out.write (Buffer, 0, len); 
            } 
            // memory stream is converted to a string 
            jsonStr = new new string (out.toByteArray (), "UTF-. 8"); 
        } 
        the catch (IOException E) { 
            e.printStackTrace (); 
        } 
        return jsonStr;
    }
}