I have the added external JARs to the 'lib' directory (GlassFish server config). In spite of that, my application runs into this exception.
exception
javax.servlet.ServletException: PWC1392: Error instantiating servlet class bose.MainServlet
root cause
java.lang.NoClassDefFoundError: org/expressme/openid/OpenIdException
root cause
java.lang.ClassNotFoundException: org.expressme.openid.OpenIdException
OR
randomly, I'm getting a
Servlet MainServlet is not available
The application runs perfecty locally. However, it is unable to run on Jelastic.
This is the JAR I've added: http://code.google.com/p/jopenid/
After navigating to this page ( http://boseapp1.jelastic.servint.net/login.jsp ), if one clicks on the Google/Yahoo image. the request goes to a servlet ( MainServlet ), where the OpenID library is being used. This is where the application stumbles into an exception.
Where am I going wrong ?
Here's the servlet code:
package bose;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.HashSet;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.expressme.openid.Association;
import org.expressme.openid.Authentication;
import org.expressme.openid.Endpoint;
import org.expressme.openid.OpenIdException;
import org.expressme.openid.OpenIdManager;
/**
*
* @author root
*/
public class MainServlet extends HttpServlet {
static final long ONE_HOUR = 3600000L;
static final long TWO_HOUR = ONE_HOUR * 2L;
static final String ATTR_MAC = "openid_mac";
static final String ATTR_ALIAS = "openid_alias";
private OpenIdManager manager;
@Override
public void init() throws ServletException {
super.init();
manager = new OpenIdManager();
manager.setRealm("http://boseapp1.jelastic.servint.net/");
manager.setReturnTo("http://boseapp1.jelastic.servint.net/openid");
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// manager.setRealm(request.getrequest.getContextPath());
//manager.setReturnTo(request.getContentType()+"/openid");
String op = request.getParameter("op");
if (op==null) {
// check sign on result from Google or Yahoo:
checkNonce(request.getParameter("openid.response_nonce"));
// get authentication:
byte[] mac_key = (byte[]) request.getSession().getAttribute(ATTR_MAC);
String alias = (String) request.getSession().getAttribute(ATTR_ALIAS);
Authentication authentication = manager.getAuthentication(request, mac_key, alias);
response.setContentType("text/html; charset=UTF-8");
// showAuthentication(response.getWriter(), authentication);
request.getSession().setAttribute("name",authentication.getFullname());
request.getSession().setAttribute("email",authentication.getEmail());
request.getSession().setAttribute("gender",authentication.getGender());
if(User.checkUserPresence(authentication.getEmail()))
{
response.sendRedirect(request.getContextPath()+"/problem_list.jsp");
return;
}
else
{
response.sendRedirect(request.getContextPath()+"/completeProfile.jsp");
return;
}
}
if (op.equals("Google") || op.equals("Yahoo")) {
// redirect to Google or Yahoo sign on page:
Endpoint endpoint = manager.lookupEndpoint(op);
Association association = manager.lookupAssociation(endpoint);
request.getSession().setAttribute(ATTR_MAC, association.getRawMacKey());
request.getSession().setAttribute(ATTR_ALIAS, endpoint.getAlias());
String url = manager.getAuthenticationUrl(endpoint, association);
response.sendRedirect(url);
}
else {
throw new ServletException("Unsupported OP: " + op);
}
}
void showAuthentication(PrintWriter pw, Authentication auth) {
pw.print("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" /><title>Test JOpenID</title></head><body><h1>You have successfully signed on!</h1>");
pw.print("<p>Identity: " + auth.getIdentity() + "</p>");
pw.print("<p>Email: " + auth.getEmail() + "</p>");
pw.print("<p>Full name: " + auth.getFullname() + "</p>");
pw.print("<p>First name: " + auth.getFirstname() + "</p>");
pw.print("<p>Last name: " + auth.getLastname() + "</p>");
pw.print("<p>Gender: " + auth.getGender() + "</p>");
pw.print("<p>Language: " + auth.getLanguage() + "</p>");
pw.print("</body></html>");
pw.flush();
}
void checkNonce(String nonce) {
// check response_nonce to prevent replay-attack:
if (nonce==null || nonce.length()<20)
throw new OpenIdException("Verify failed.");
// make sure the time of server is correct:
long nonceTime = getNonceTime(nonce);
long diff = Math.abs(System.currentTimeMillis() - nonceTime);
if (diff > ONE_HOUR)
throw new OpenIdException("Bad nonce time.");
if (isNonceExist(nonce))
throw new OpenIdException("Verify nonce failed.");
storeNonce(nonce, nonceTime + TWO_HOUR);
}
// simulate a database that store all nonce:
private Set<String> nonceDb = new HashSet<String>();
// check if nonce is exist in database:
boolean isNonceExist(String nonce) {
return nonceDb.contains(nonce);
}
// store nonce in database:
void storeNonce(String nonce, long expires) {
nonceDb.add(nonce);
}
long getNonceTime(String nonce) {
try {
return new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
.parse(nonce.substring(0, 19) + "+0000")
.getTime();
}
catch(ParseException e) {
throw new OpenIdException("Bad nonce time.");
}
}
}
