public void signForAccessToken(HttpPost req) throws FiveHundredException {
OAuthParameters params = new OAuthParameters(this.consumerKey);
final ArrayList<NameValuePair> tuples = buildParameters(params);
params.put(OAuthConstants.TOKEN, this.tokenKey);
// generate the base string for signature.
String str = getSignatureBaseString(req, params);
str = getSignature(str, consumerSecret, this.tokenSecret);
params.put(OAuthConstants.SIGNATURE, str);
// get the authorization header
str = params.getAuthorizationHeaderValue();
req.addHeader(OAuthConstants.HEADER, str);
try {
req.setEntity(new UrlEncodedFormEntity(tuples));
} catch (UnsupportedEncodingException e) {
throw new FiveHundredException(e);
}
}
