使用淘宝接口实现ip地址转换为地区名称地址

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
 
import net.sf.json.JSONObject;



public static String GetAddressByIp(String IP){
        String resout = "";
        try{
         String str = getJsonContent("http://ip.taobao.com/service/getIpInfo.php?ip="+IP);
         JSONObject obj = JSONObject.fromObject(str);
         JSONObject obj2 =  (JSONObject) obj.get("data");
         int code = (Integer) obj.get("code");
         if(code == 0){
          if(obj2.get("region").equals(obj2.get("city"))){
        	  resout =  obj2.get("country")+""+obj2.get("region");
          }else{
        	  resout =  obj2.get("country")+""+obj2.get("region")+"" +obj2.get("city");
          }
         }else{
             resout =  "IP地址有误";
         }
        }catch(Exception e){
             
            e.printStackTrace();
             resout = "获取IP地址异常："+e.getMessage();
        }
        return 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();
            // 设置连接属性
            httpConn.setConnectTimeout(2000);
            httpConn.setDoInput(true);
            httpConn.setRequestMethod("GET");
            // 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 "";
    }
 
    
    private static String ConvertStream2Json(InputStream inputStream)
    {
        String jsonStr = "";
        // ByteArrayOutputStream相当于内存输出流
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        // 将输入流转移到内存输出流中
        try
        {
            while ((len = inputStream.read(buffer, 0, buffer.length)) != -1)
            {
                out.write(buffer, 0, len);
            }
            // 将内存流转换为字符串
            jsonStr = new String(out.toByteArray());
        }
        catch (IOException e)
        {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return jsonStr;
    }