Spring 에서 Bean 등록 방법

1. xml 을 이용한 등록 방법 - setter을 이용

1) applicationContext.xml

<bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate">




     <property name="sqlMapClient" ref="sqlMapClient"/>




</bean>

 

<bean id="loginDAO" class="com.mungchung.sample.login.LoginDAOImpl">




     <property name="sqlMapClientTemplate" ref="sqlMapClientTemplate"/>




</bean>




 2) Bean

public class LoginDAOImpl implements LoginDAO {




     private SqlMapClientTemplate sqlMapClientTemplate;

 

     public void setSqlMapClientTemplate(SqlMapClientTemplate sqlMapClientTemplate) {




         this.sqlMapClientTemplate = sqlMapClientTemplate;




     }

}




2. xml 을 이용한 등록 방법 - 생성자 이용

1) applicationContext.xml




<bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate">




     <property name="sqlMapClient" ref="sqlMapClient"/>




</bean>

<bean id="loginDAO" class="com.mungchung.sample.login.LoginDAOImpl">




     <constructor-arg name="sqlMapClientTemplate" ref="sqlMapClientTemplate"/>




</bean>




2) Bean

public class LoginDAOImpl implements LoginDAO {




     private SqlMapClientTemplate sqlMapClientTemplate;

 

     public LoginDAOImpl(SqlMapClientTemplate sqlMapClientTemplate) {




         this.sqlMapClientTemplate = sqlMapClientTemplate;




     }

}




3. 어노테이션 이용 - 직접 Bean 등록

1) servlet - context.xml




<context:annotation-config/>




<bean id="loginDAO" class="com.mungchung.sample.login.LoginDAOImpl"/>




2) Bean




public class LoginDAOImpl implements LoginDAO {




     @Autowired




     private SqlMapClientTemplate sqlMapClientTemplate;




}




4. 어노테이션 이용 - Component - Scan 이용

1) servlet - context.xml

<context:component-scan base-package="com.mungchung.sample.login"/>

2) Bean




@Repository

public class LoginDAOImpl implements LoginDAO {




     @Autowired

     private SqlMapClientTemplate sqlMapClientTemplate;




}




출처

https://denodo1.tistory.com/188