AuthenticationSuccessHandlerImpl.java

package me.anant.PMS.config;

import java.io.IOException;
import java.util.Set;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.web.authentication.AuthenticationSuccessHandler;
import org.springframework.stereotype.Component;

import me.anant.PMS.dao.UserRepository;

@Component
public class AuthenticationSuccessHandlerImpl implements AuthenticationSuccessHandler{

    @Autowired
    UserRepository repository; 

    @Override
    public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response,
                                        Authentication authentication) throws IOException, ServletException {
    	Set<String> roles = AuthorityUtils.authorityListToSet(authentication.getAuthorities());
        if (roles.contains("ROLE_ADMIN")) {
            response.sendRedirect("/admin/product");
        } else {
            response.sendRedirect("/customer");
        }
    }
}