Spring中的注入@Autowired，@Resource，@Qualifier
帖子中主要是讲了Spring中的注入方式，总结如下：
A：未使用注解我们是怎样注入属性的
类的实现 写道
public class UserManagerImpl implements UserManager {
privateUserDaouserDao;
publicvoidsetUserDao(UserDaouserDao){
this.userDao=userDao;
}
...
}
XML配置文件的实现 写道
<bean id="userManagerImpl" class="com.kedacom.spring.annotation.service.UserManagerImpl">
<propertyname="userDao"ref="userDao"/>
</bean>
<beanid="userDao"class="com.kedacom.spring.annotation.persistence.UserDaoImpl">
<propertyname="sessionFactory"ref="mySessionFactory"/>
</bean>
B: 引入@Autowired注解（不推荐使用，建议使用@Resource）
类的实现（对成员变量进行标注） 写道
public class UserManagerImpl implements UserManager {
@Autowired
privateUserDaouserDao;
...
}
（对方法进行标注） 写道
public class UserManagerImpl implements UserManager {
privateUserDaouserDao;
@Autowired
publicvoidsetUserDao(UserDaouserDao){
this.userDao=userDao;
}
...
}
XML配置 写道
<bean id="userManagerImpl" class="com.kedacom.spring.annotation.service.UserManagerImpl" />
<beanid="userDao"class="com.kedacom.spring.annotation.persistence.UserDaoImpl">
<propertyname="sessionFactory"ref="mySessionFactory"/>
</bean>
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