java解析url 得到返回值

public?String?getReturnData(String?urlString)?throws?UnsupportedEncodingException?{??

?????String?res?=?"";???

????????try?{???

????????????URL?url?=?new?URL(urlString);??

????????????java.net.HttpURLConnection?conn?=?(java.net.HttpURLConnection)url.openConnection();??

????????????conn.setDoOutput(true);??

????????????conn.setRequestMethod("POST");??

????????????java.io.BufferedReader?in?=?new?java.io.BufferedReader(new?java.io.InputStreamReader(conn.getInputStream(),"UTF-8"));??

????????????String?line;??

???????????while?((line?=?in.readLine())?!=?null)?{??

???????????????res?+=?line+"\n";??

?????????}??

????????????in.close();??

????????}?catch?(Exception?e)?{??

????????????logger.error("error?in?wapaction,and?e?is?"?+?e.getMessage());??

????????}??

//??????System.out.println(res); ??

????????return?res;??

????}??