<<<<<<xml로 객체생성하기>>>- <bean>태그사용
ArticleDAO.java----------------------------------------------//인터페이스
package Chapter1;
public interface ArticleDAO {
String sayhello(String name);
}
WriteArticleDAO.java-----------------------------------------------------------------//상속받음
package Chapter1;
public class WriteArticleDAO implements ArticleDAO{
@Override
public String sayhello(String name) {
return "Hello"+name;
}
}
App.xml----------------------------------------------------------------------------//객체생성
<bean id="hello" class="Chapter1.WriteArticleDAO"/>
<bean id="dao" class="Chapter2.WriteArticleDAO "/>
<!-- Article dao=new WriteArticleDAO(); 와 동일 -->
<<<<<<<DI>>>>>>>>>>>>>>
ArticleDAO.java---------------------------------------------------------------------//인터페이스
package Chapter2;
public interface ArticleDAO {
public void hello();
}
ArticleSupport.java-----------------------------------//인터페이스 타입으로 매개변수를 주입한 DI구현
package Chapter2;
public class ArticleSupport {
private ArticleDAO dao;
private String name;
public ArticleSupport(ArticleDAO dao){ //생성자로 DI구현
this.dao=dao;
}
public ArticleSupport(String name){
this.name=name;
}
public void show(){
dao.hello();
System.out.println(name);
}
}
WriteArticleDAO.java--------------------------------------------------------------//ArticleDAO 상속받음
package Chapter2;
public class WriteArticleDAO implements ArticleDAO{
public void hello(){
System.out.println("hello");
}
}
App.xml-------------------------------------------------//객체생성
<bean id="dao" class="Chapter2.WriteArticleDAO "/>
<bean id="asupport1" class="Chapter2.ArticleSupport">
<constructor-arg ref="dao"/>
</bean>
<!—생성자 DI의 매개변수로 외부객체를 만들어서 참조하는 경우 -->
<bean id="asupport2" class="Chapter2.ArticleSupport">
<constructor-arg><bean class="Chapter2.WriteArticleDAO"/>
</constructor-arg>
</bean> <!-- 생성자 DI의 매개변수로 바로 객체생성해서 주입하는 경우 -->
<bean id="asupport3" class="Chapter2.ArticleSupport">
<constructor-arg value="hong"></constructor-arg>
</bean> <!-- 생성자 매개타입이 String으로 value값 줌 -->
<bean id="asupport4" class="Chapter2.ArticleSupport">
<constructor-arg> <value>hong</value></constructor-arg>
</bean> <!-- value엘리먼트로 value값 설정 -->
<<<<<생성자에 타입설정해주기>>>>> -Setter메서드의 매개변수값 전달방법, Property설정
<bean id="na_add_age" class="Sample.T">
<constructor-arg><value>hong</value></constructor-arg>
<constructor-arg><value type="int">12</value></constructor-arg>
</bean> <!-- 만일 타입을 지정해주지 않으면 String으로 인식 -->
T1.java----------------------------------------------------------------------------------//인터페이스
package Sample2;
public interface T1 {
}
Info.java---------------------------------------------------//인터페이스
package Sample2;
public interface Info {
void prt();
void show();
}
Infoimple.java---------------------------------------------//상속받음
package Sample2;
public class InfoImple implements Info {
@Override
public void prt() {
System.out.println("infoImple prt");
}
@Override
public void show() {
System.out.println("infoInple show");
}
}
T1imple.java----------------------------------------------------------------------------//상속받음
package Sample2;
public class T1Imple implements T1 {
private String name;
private int age;
private Info ins;
public void setName(String name) {
this.name = name;
}
public void setAge(int age) {
this.age = age;
}
public void setIns(Info ins) {
this.ins = ins;
}
public void prt(){
if(ins!=null){
System.out.println(name+" , "+age);
System.out.println("========about ins==============");
ins.prt();
ins.show();
}else{
System.out.println("ins:null");
}
}
}
ApplicationContext.xml------------------------------------------------------------//DI
<!-- 방법1:setter메서드의 매개변수를 넣어줄 때 객체를 생성한다. -->
<bean id="t1" class="Sample2.T1Imple">
<property name="name" value="김"/>
<property name="age" value="10"/>
<property name="ins"><bean class="Sample2.InfoImple"/></property>
</bean>
<!-- 방법2:setter메서드의 매새변수를 넣어줄 때 미리 만들어놓은 bean객체를 ref로 불러온다. -->
<bean id="tinfo" class="Sample2.InfoImple"/>
<bean id="t2" class="Sample2.T1Imple">
<property name="name" value="kim"/>
<property name="age" value="10"/>
<property name="ins"><ref bean="tinfo"/> </property>
</bean>
<!-- 방법3:프로퍼티 엘리먼트를 쓰지않고 p:필드명=”값”으로 지정함 -->
<bean id="t3" class="Sample2.T1Imple" p:name="park" p:age="5" p:ins-ref="tinfo"/>
<<<<List에 객체 저장하기>>>>-Property를 이용한 객체 저장
-------------------------------------------------------------- ListData.java
package Sample3;
import java.util.List;
public class ListData {
List<String> list;
List<Integer> list2;
public List<String> getList() {
return list;
}
public void setList(List<String> list) {
this.list = list;
}
public List<Integer> getList2() {
return list2;
}
public void setList2(List<Integer> list2) {
this.list2 = list2;
}
//List<String> aaa=new ArrayList<String>();
//aaa.add("ddd");
//aaa.add("ccc");
//ListData d=new ListData();
//d.setList(aaa);
}
----------------------------------------------------------------------------------------ApplicationContext.xml
<bean id="lst1" class="Sample3.ListData">
<!-- list.setList(new ArrayList());와 동일 -->
<property name="list"> <!-- List<String> list; -->
<list>
<value>홍길동</value>
<value>김하나</value>
<value>김지은</value>
</list>
</property>
</bean>
<bean id="lst2" class="Sample3.ListData">
<property name="list2">
<list value-type="java.lang.Integer">
<value>100</value> <!-- 아니면 value에 type로 지정해주어도됨 -->
<value>200</value>
<value>300</value>
</list>
</property>
</bean>
<<<<<Map>>>>>객체생성하기
----------------------------------------------------------MapData.java
package Sample3;
import java.util.Map;
public class MapData {
private Map<String,MemberDTO> dto;
public Map<String, MemberDTO> getDto() {
return dto;
}
public void setDto(Map<String, MemberDTO> dto) {
this.dto = dto;
}
}
-----------------------------------------------------------------------------------MapDataTest.java
package Sample3;
public class MapDataTest {
MapData data;
@Before
public void bbb(){
ApplicationContext ctx
=new ClassPathXmlApplicationContext("ApplicationContext3.xml");
data=ctx.getBean("data",MapData.class);
//MapData.class타입의 객체를 읽어옴
}
@Test //단위테스트
public void aaa(){
Assert.assertNotNull(data);
Assert.assertEquals("kim",data.getDto().get("a1").getName());
}
}
---------------------------------------------------------MemberDTO.java
package Sample3;
public class MemberDTO {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
------------------------------------------------------------------------------------ApplicationContext.xml
<bean id="data" class="Sample3.MapData">
<property name="dto">
<!-- dto이름을 가진 MapData객체 생성-->
<map>
<entry> <!-- Map타입의 Key와 value설정 -->
<key><value>a1</value></key>
<bean class="Sample3.MemberDTO">
<property name="name"> <!-- MemberDTO에 필드명name값에
kim을set해줌 -->
<value>kim</value> <!-- 중요! 반드시 MemberDTO객체를 생성해야함! -->
</property>
</bean>
</entry>
<entry>
<key><value>a2</value></key> <!-- 외부객체 d를 참조해서 매개변수를 주입 -->
<ref bean="d"/>
</entry>
</map>
</property>
</bean>
<bean id="d" class="Sample3.MemberDTO">
<property name="name" value="hong"/>
</bean>
<<<<Properties받아오기>>>>
-------------------------------------------------------------BookList.java
package Sample4;
import java.util.Properties;
public class BookList {
private Properties props;
public void setProps(Properties props){
this.props=props;
}
public Properties getProps(){
return props;
}
}
-----------------------------------------------------------------------------------------BookTest.java
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:ApplicationContext4.xml")
public class BookTest {
@Autowired //ApplicationContext타입으로 자동연결
private ApplicationContext ctx;
@Test
public void pro()
{
BookList b=ctx.getBean("client",BookList.class);
Assert.assertEquals("1000",b.getProps().get("timeout"));
}
------------------------------------------------------ApplicationContext.xml
<bean id="client" class="Sample4.BookList">
<property name="props">
<props> <!-- 속성Key와 value를 설정 -->
<prop key="server">192.168.0.10</prop>
<prop key="timeout">1000</prop>
</props>
</property>
</bean>
--------------------------------------------------------Info.java
package Sample5;
public class Info {
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
----------------------------------------------------------------------------------Auto.java
package Sample5;
public class Auto {
private Info info1;
private Info info2;
public Info getInfo1() {
return info1;
}
public void setInfo1(Info info1) {
this.info1 = info1;
}
public Info getInfo2() {
return info2;
}
public void setInfo2(Info info2) {
this.info2 = info2;
}
public Auto(){ //기본생성자
System.out.println("Auto Contstructor");
}
public Auto(Info info){ //매개변수가 있는 생성자
System.out.println("Auto Constructor - info");
}
}
-----------------------------------------------------------------------AutoTest.java
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:ApplicationContext5.xml")
public class AutoTest {
@Autowired
private ApplicationContext ctx;
@Test
public void pro()
{
Auto b=ctx.getBean("t2",Auto.class);
}
}
--------------------------------------------------------------------ApplicationContext.xml
<bean id="info2" class="Sample5.Info"/> <!-- 이름으로 연결(byName) -->
<bean id="t2" class="Sample5.Auto" autowire="byName"/>
<!-- Setter연결(객체가 생성되어야 setter를 불러올 수 있으므로 생성자 자동실행) -->
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