spring container

Inversion of control 페이지 참조할 것

ApplicationContext가 BeanFactory보다 좋은점

• MessageSource지원 (MessageSourceAware)
• Listener지원 (ApplicationEventPublisherAware)
• ResourceLoader지원 (ResourceLoaderAware)

빈정보 접근

• BeaNameAware
• BeanFactoryAware
• ApplicatoinContextAware

생명주기

• InitializingBean , init-method, @PostConstruct
• DiposableBean ,destroy-method, @PreDestroy

설정

• Spring 2.0의 XML확장기능 (1)
• Spring 2.0의 XML확장기능 (2)
• InsideSpring (3) 스프링 밖에서 WebApplicationContext에 접근하기

Annotation 기반

• @Resource : JSR-250 / EJB3 model
• @PostConstruct : InitializingBean#afterPropertiesSet()과 비슷
• @PreDestroy : DisposableBean#destroy()와 비슷
• @Component
  • 컴포넌트 자동감지 기능을 사용해보니..

DI관련 JSR

• Dependency Injection 표준화?
• http://www.adam-bien.com/roller/abien/entry/what_is_the_relation_between

Scope

singleton, prototype, request, session, global-session

설정 샘플

• 첨부: springonline_final_050108[1].pdf

퀴즈풀기

<bean id="info" class="a.b.c.Info" p:dao-ref="mydao" scope="prototype" />
<bean id="mydao" class="a.b.c.MyDao" />

• ApplicationContext aware
• <aop:scoped-proxy/>
• Method Injection
• @Configuable
• Arbitrary method replacement

Spring container API

• ClassPathApplicationContext
• FileSstemXmlApplicationContext

Spring DI sample

<bean id="jobRepository" class="org.springframework.batch.core.repository.support.SimpleJobRepository">
  <constructor-arg ref="mapJobInstanceDao" />
  <constructor-arg ref="mapStepExecutionDao" />
</bean>

<bean id="stockPremiunContentsBuildJob" parent="simpleJob">
  <property name="steps">
    <ref bean="recommendationBuildStep"/>
  </property>
</bean>

<constructor-arg><value>10</value></constructor-arg>
<constructor-arg><value type="long">10</value></constructor-arg>
<constructor-arg value="10"/>

List

<list value-type="java.lang.Double"></list>

<list>
  <ref bean="testStep"/>
  <bean class="test.testStep"/>
</list>

Map

<map>
  <entry>
    <key><value>test</value></key>
    <ref bean="testJob"/>
  </entry>
</map>

<map key-type="java.lang.Integer" value-type="java.lang.Double">
  <entry key="1" value="0.11"/>
</map>

Property

<properites>
  <prop key="name">jsh<prop>
</properties>

Set

<set value-type="java.lang.Integer">
  <value>1</value>
</set>

네임스페이스 활용

• p:속성명, p:속성명-ref

Factory

<bean id="exampleBean" class="examples.ExampleBean2" factory-method="createInstance"/>

<bean id="myFactoryBean" class="..."/>
<bean id="exampleBean" factory-bean="myFactoryBean" factory-method="createInstance"/>

AutoWire

<bean id="job" class="test.testJob" autowire="byName"/>

• byName, byType, constructor, autodetect = conectructor + byType

Spring annotation 기반 설정

@Required

• 필수 속성 지정
• RequiredAnnotationBeanPostProcessor 등록 또는 <context:annotation-config/>

@Autowired

• AutowiredAnnotationBeanPostProcessor 등록 또는 <context:annotation-config/>
• 멤버필드나 메서드에 선언
• @Autowired(required=false)

@Autowired
@Qualifier("main")

빈객체의 수식어는 <qualifer>태그를 이용해 지정.

<bean>
   <qualifier value="main'/>
</bean>

@Autowired
publid void init(@Qulifier("testJob") Job job, Task task)

@Resource

• @Resource(name="beanId")
• 메서드나 멤버객체에 다사용
• CommonAnnotationBeanPostProcessor 혹은 <context:annotation-config/>

@PostConstruct @PreDestroy

• CommonAnnotationBeanPostProcessor 혹은 <context:annotation-config/>

@Component

<context:component-scan
    base-package="com.nhncorp.smon.filemgr.action">
   <context:include-filter type="regex" expression=".*TestJob"/>
   <context:exclude-filter type="aspectj" expression="..*Task"/>
<context:component-scan>

• @Autowired나 @Required도 함께 사용가능

@Component("testJob")
@Scope("prototype")
@Component

• filter의 type은 annotation, assignable, regex, asjpectj

<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"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

Spring context event

• void publishEvent(ApplicationEvent event)
• ApplicationListener
  • .onApplicationEvent
• ApplicationEvent
  • ContextRefreshEvent
  • ContextCloseEvent
  • ContextStartedEvent
  • ContextStoppedEvent

Spring customEditor

• CustomEditorConfigurer
• java.beans.PropetyEditorSupport

<bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
  <property name="customEditors">
    <map>
      <entry key="int[]">
        <bean class="org.springframework.batch.support.IntArrayPropertyEditor" />
      </entry>
      <entry key="org.springframework.batch.item.file.transform.Range[]">
        <bean class="org.springframework.batch.item.file.transform.RangeArrayPropertyEditor" />
      </entry>
      <entry key="java.util.Date">
        <bean class="org.springframework.beans.propertyeditors.CustomDateEditor">
          <constructor-arg>
            <bean class="java.text.SimpleDateFormat">
              <constructor-arg value="yyyyMMdd" />
            </bean>
          </constructor-arg>
          <constructor-arg value="false" />
        </bean>
      </entry>
    </map>
  </property>
</bean>

Spring message

• context.getMessage
• MessageSource
• ResourceBundleMessageSource
  • .setBasenames : 파일명 지정

<bean id="messageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
  <property name="basename" value="message.error"/>
</bean>

• message.properties
• message_en.properties
• message_ko.properties

Bean객체에서 사용하기

• MessageSourceAware
• MessageSourceAccessor
  • messageSource 속성지정
  • MessageSourceAccessor.getMessage