openID login (on localhost) at google app engine

openID login (on localhost) at google app engine

I've written openID login for google App engine.
static {
openIdProviders = new HashMap<String, String>();
openIdProviders.put("Google",
"https://www.google.com/accounts/o8/id");
openIdProviders.put("Yahoo", "yahoo.com");
}
@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser(); // or
req.getUserPrincipal()
Set<String> attributes = new HashSet();
resp.setContentType("text/html");
PrintWriter out = resp.getWriter();
if (user != null) {
out.println("Hello <i>" + user.getNickname() + "</i>!");
out.println("[<a href=\"" +
userService.createLogoutURL(req.getRequestURI())+ "\">sign
out</a>]");
} else {
out.println("Sign in at: ");
for (String providerName : openIdProviders.keySet()) {
String providerUrl = openIdProviders.get(providerName);
String loginUrl =
userService.createLoginURL(req.getRequestURI(), null,
providerUrl, attributes);
out.println("[<a href=\"" + loginUrl + "\">" +
providerName+ "</a>] ");
}
}
}
everything works very well when I deploy my app. No problems. after
choosing openID provider, I'm redirected to that page:
sample.appspot.com/_ah/login_redir?claimid=[OPen ID provider]=[my sample
page]/_ah/login_required
that's my servlet.
<servlet>
<servlet-name>Authorization</servlet-name>
<servlet-class>ge.eid.test.Authorization</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Authorization</servlet-name>
<url-pattern>/_ah/login_required</url-pattern>
</servlet-mapping>
ok. everything is fine! but, when I run the sampe app at localhost, I have
another redirection URL:
http://localhost:8888/_ah/login?continue=/F_ah/Flogin_required
so I do not have OpenID login. I have something like that:
question 1) How to create openID login at localhost too.