Chatto/src/main/java/org/ros/chatto/logged/UserSessionLoggingLogoutSuccessHandler.java

package org.ros.chatto.logged;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.springframework.security.core.Authentication;
import org.springframework.security.web.authentication.logout.LogoutSuccessHandler;
import org.springframework.stereotype.Component;

@Component("myLogoutSuccessHandler")
public class UserSessionLoggingLogoutSuccessHandler
		implements LogoutSuccessHandler {
	@Override
	public void onLogoutSuccess(HttpServletRequest request,
			HttpServletResponse response, Authentication authentication)
			throws IOException, ServletException {
		HttpSession session = request.getSession();
		if (session != null) {
			session.removeAttribute("user");
		}
		response.sendRedirect("/login?logout");
	}
}