protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException {
OAuthMessage message = new HttpRequestMessage(req, req.getRequestURL().toString());
OAuthAccessor accessor;
try {
message.requireParameters(OAuth.OAUTH_TOKEN);
accessor = tokenContainer.getAccessTokenAccessor(message.getParameter(OAuth.OAUTH_TOKEN));
} catch (OAuthProblemException e) {
LOG.info("No valid OAuth token present", e);
// Have to set status here manually, cannot use e.getHttpStatusCode
// because message.requireParameters doesn't set it in the exception.