• 스프링 프레임워크에서 Service 사용하기

[개념이해 참고할 블로그.](https://m.blog.naver.com/scw0531/220988401816)

개념이해 참고할 블로그.

<aside> 💡 @Controller의 역할에 대해 알아보기. @Autowired, @Service, @Repository에 대해 알아보기.

</aside>

<순서> View ⇒Controller ⇒Service ⇒DAO(Repository)⇒DB

ex)전체보기 기능 예시

1. **View (**index.jsp) href 주소 "list.go" 부여

2. **Controller (**PerController.java) @Controller, @Autowired (Service 인터페이스 연결) 주소 "list.go"를 @RequestMapping 함. (view 연결) service 객체의 전체보기 메소드를 연결. personList.jsp를 return 함.

3. Service (PersonServiceImpl.java) @Service, @Autowired (DAO 인터페이스 연결) dao객체의 전체보기 메소드를 연결.

4. DAO (PersonDAOImpl.java) @Repository, @Autowired (template 연결) SQL문으로 DB연결

#준비

New-Dynamic Web Project-03_SpringTest 생성

• web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="<http://www.w3.org/2001/XMLSchema-instance>" xmlns="<http://xmlns.jcp.org/xml/ns/javaee>" xsi:schemaLocation="<http://xmlns.jcp.org/xml/ns/javaee> <http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd>" id="WebApp_ID" version="4.0">
  <display-name>03_SpringTest</display-name>
  <servlet>
  	<servlet-name>springtest</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springtest</servlet-name>
  	<url-pattern>*.go</url-pattern>
  </servlet-mapping>
  
  <filter>
  <filter-name>encodingFilter</filter-name>
  <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
  <init-param>
  <param-name>encoding</param-name>
  <param-value>utf-8</param-value>
  </init-param>
  </filter>
  
  <filter-mapping>
  	<filter-name>encodingFilter</filter-name>
  	<url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

• springtest-servlet.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="<http://www.springframework.org/schema/beans>"
	xmlns:xsi="<http://www.w3.org/2001/XMLSchema-instance>"
	xmlns:context="<http://www.springframework.org/schema/context>"
	xmlns:util="<http://www.springframework.org/schema/util>"
	xsi:schemaLocation="<http://www.springframework.org/schema/beans> <http://www.springframework.org/schema/beans/spring-beans-4.0.xsd>
		<http://www.springframework.org/schema/context> <http://www.springframework.org/schema/context/spring-context-4.0.xsd>
		<http://www.springframework.org/schema/util> <http://www.springframework.org/schema/util/spring-util-4.0.xsd>">

<!-- 패키지 등록 -->
<context:component-scan base-package="org.person"/>

<!-- db설정 -->
<bean id="ds" class="org.springframework.jndi.JndiObjectFactoryBean">
<property name="jndiName">
	<value>jdbc/spring</value>
</property>
<property name="resourceRef" value="true"></property>
</bean>

<!-- template설정 -->
<bean id="template" class="org.springframework.jdbc.core.JdbcTemplate">
	<property name="dataSource" ref="ds"></property>
</bean>

<!-- viewResolver설정 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="WEB-INF/jsp/"></property>
<property name="suffix" value=".jsp"></property>
</bean>

</beans>