一、前言

这篇随笔主要是记录IoC完全使用Annotation的过程。

二、架包以及资源

架包的引入，以及项目结构参考；

三、配置环境

1.配置applicationContext.xml

其中base-package为指定扫描路径，当前配置为扫描路径：com.cyrus.paltform下的类。

2.服务类TCyrusUserService注释

package com.cyrus.platform.service;import javax.annotation.Resource;import org.springframework.stereotype.Component;import com.cyrus.platform.dao.TCyrusUserDAO;import com.cyrus.platform.model.TCyrusUser;@Component("userService")public class TCyrusUserService {    private TCyrusUserDAO userDAO;            public void save(TCyrusUser user){        this.userDAO.save(user);    }    public TCyrusUserDAO getUserDAO() {        return userDAO;    }    @Resource(name="userDAO")    public void setUserDAO(TCyrusUserDAO userDAO) {        this.userDAO = userDAO;    }}

其中@Component("userService") 类似于spring配置文件中bean标签，括号内的userService为bean标签中的name属性；@Resource相当于bean标签下的property属性配置，@Resource没有指定名称时，默认的搜寻规则为先查询类型，如果类型无法匹配，再查询名称。在@Resource中添加name属性则指定相关bean。

3.实现类TCyrusUserDAOImpl注释

package com.cyrus.platform.dao.impl;import org.springframework.stereotype.Component;import com.cyrus.platform.dao.TCyrusUserDAO;import com.cyrus.platform.model.TCyrusUser;@Component("userDAO")public class TCyrusUserDAOImpl implements TCyrusUserDAO {    @Override    public void save(TCyrusUser user) {        System.out.println("the user is saved!");    }}

三、测试

package com.cyrus.platform.service;import org.junit.Before;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.cyrus.platform.model.TCyrusUser;public class TCyrusUserServiceTest {    @Before    public void setUp() throws Exception {    }    @Test    public void test() {        ApplicationContext context = new ClassPathXmlApplicationContext("classpath*:resources/spring/**/application*.xml");        TCyrusUserService service = context.getBean("userService",TCyrusUserService.class);        TCyrusUser user = new TCyrusUser();        service.save(user);    }}