根据ip查询ip归属地

http://www.oschina.net/code/snippet_944819_33978

http://www.jb51.net/article/54287.htm

	public String getAddressByIP(String strIP)
	{
	  try
	  {
	    //String strIP = "61.132.31.61";
	    URL url = new URL( "http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=" + strIP);
	    URLConnection conn = url.openConnection();
	    BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream(), "UTF8"));
	    String line = null;
	    StringBuffer result = new StringBuffer();
	    while((line = reader.readLine()) != null)
	    {
	      result.append(line);
	    }
	    reader.close();
	    System.out.println(result.toString());

        JSONObject obj = JSONObject.fromObject(result.toString());
        int code = (Integer) obj.get("ret");
        String resout="";
        if(code==1){
            resout =  obj.get("country") +" "+obj.get("province")+obj.get("city") +obj.get("district") +obj.get("isp");
        }else{
        	//resout=strIP;
        }
	    return resout;
	  }
	  catch( IOException e)
	  {
	    return "读取失败";
	  }catch(Exception e){
		  return strIP;
	  }
	}