userservice.java

struts+hibernate+spring

package cn.service;

import java.util.List;

import cn.dao.UserDAO;
import cn.vo.User;

public class UserService {
	private UserDAO userDao;
	private User user;
	public User register(User user){
		List list = userDao.findByUsername(user.getUsername());
		if (list.size() > 0){
			return null;
		}
		userDao.save(user);
		return user;
	}
	public UserDAO getUserDao() {
		return userDao;
	}

	public void setUserDao(UserDAO userDao) {
		this.userDao = userDao;
	}
}