Enumeration e = params.keys();
String key;
String value;
URLEncodedPostData data = new URLEncodedPostData(URLEncodedPostData.DEFAULT_CHARSET, false);
while (e.hasMoreElements()) {
key = e.nextElement().toString();
value = (String) params.get(key);
data.append(key, value);
}
return data.toString();
}