beanfactory.java

来自「通过网站展示学校风采、文化、优点与特色」· Java 代码 · 共 68 行

package com.mvc.common.util;

import com.mvc.dao.IMemberAdminDao;
import com.mvc.dao.IMessageDao;
import com.mvc.dao.impl.MemberAdminDaoImpl;
import com.mvc.dao.impl.MessageDaoImpl;
import com.mvc.service.IMemberAdminService;
import com.mvc.service.IMessageService;
import com.mvc.service.impl.MemberAdminServiceImpl;
import com.mvc.service.impl.MessageServiceImpl;




public class BeanFactory {
	private static IMemberAdminDao memberAdminDao;

	private static IMemberAdminService memberAdminService;

	private static IMessageDao messageDao;

	private static IMessageService messageService;

	public static Object getBean(String beanName) {
		if (beanName.equals("memberAdminDao")) {
			memberAdminDao = getMemberAdminDao();
			return memberAdminDao;
		}
		if (beanName.equals("memberAdminService")) {
			memberAdminService = getMemberAdminService();
			return memberAdminService;
		}
		if (beanName.equals("messageDao")) {
			messageDao = getMessageDao();
			return messageDao;
		}
		if (beanName.equals("messageService")) {
			messageService = getMessageService();
			return messageService;
		}
		return null;
	}

	private static IMemberAdminDao getMemberAdminDao() {
		if (memberAdminDao == null)
			memberAdminDao = new MemberAdminDaoImpl();
		return memberAdminDao;
	}

	private static IMemberAdminService getMemberAdminService() {
		if (memberAdminService == null)
			memberAdminService = new MemberAdminServiceImpl();
		return memberAdminService;
	}

	private static IMessageDao getMessageDao() {
		if (messageDao == null)
			messageDao = new MessageDaoImpl();
		return messageDao;
	}

	private static IMessageService getMessageService() {
		if (messageService == null)
			messageService = new MessageServiceImpl();
		return messageService;
	}
}