Java tutorial
/* * This file is part of the CSNetwork Services (CSNS) project. * * Copyright 2012, Chengyu Sun (csun@calstatela.edu). * * CSNS is free software: you can redistribute it and/or modify it under the * terms of the GNU Affero General Public License as published by the Free * Software Foundation, either version 3 of the License, or (at your option) * any later version. * * CSNS is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for * more details. * * You should have received a copy of the GNU Affero General Public License * along with CSNS. If not, see http://www.gnu.org/licenses/agpl.html. */ package csns.security; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.dao.DataAccessException; import org.springframework.security.core.userdetails.UserDetails; import org.springframework.security.core.userdetails.UserDetailsService; import org.springframework.security.core.userdetails.UsernameNotFoundException; import org.springframework.stereotype.Service; import csns.model.core.User; import csns.model.core.dao.UserDao; @Service("userService") public class UserDetailsServiceImpl implements UserDetailsService { @Autowired private UserDao userDao; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException { User user = userDao.getUserByUsername(username); if (user == null) throw new UsernameNotFoundException(username + " is not found."); return user; } }