[JAVA/SPRING] 어노테이션을 이용한 스프링 설정 – 2

어노테이션을 이용한 스프링 설정 -2

스프링 설정파일을 하나로 하는 것은 유지보수의 측면에서 비효율적

• 기능별로 분리하는게 효율적

Java 파일 분리

• 타 파일의 객체가 필요해서 메소드를 호출해야하는 경우에는, 프로퍼티를 선언해서 @Autowired로 자동주입을 한 후, 메소드가아닌 자동주입된 프로퍼티를 명시하면 된다.

• 여러개의 스프링 설정파일은, 배열타입으로 넣어준다. (MemberConfig1.class, MemberConfig2.class, MemberConfig3.class)

// MemberConfig1.java
​
@Configuration
public class MemberConfig1 {
​
    @Bean
    public StudentDao studentDao() {
        return new StudentDao();
    }
    
    @Bean
    public StudentRegisterService registerService() {
        return new StudentRegisterService(studentDao());
    }
    
    @Bean
    public StudentModifyService modifyService() {
        return new StudentModifyService(studentDao());
    }
    
    @Bean
    public StudentSelectService selectService() {
        return new StudentSelectService(studentDao());
    }
    
    @Bean
    public StudentDeleteService deleteService() {
        return new StudentDeleteService(studentDao());
    }
    
    @Bean
    public StudentAllSelectService allSelectService() {
        return new StudentAllSelectService(studentDao());
    }
    
}

// MemberConfig2.java
​
@Configuration
public class MemberConfig2 {
​
    @Bean
    public DataBaseConnectionInfo dataBaseConnectionInfoDev() {
        DataBaseConnectionInfo infoDev = new DataBaseConnectionInfo();
        infoDev.setJdbcUrl("jdbc:oracle:thin:@localhost:1521:xe");
        infoDev.setUserId("scott");
        infoDev.setUserPw("tiger");
        
        return infoDev;
    }
    
    @Bean
    public DataBaseConnectionInfo dataBaseConnectionInfoReal() {
        DataBaseConnectionInfo infoReal = new DataBaseConnectionInfo();
        infoReal.setJdbcUrl("jdbc:oracle:thin:@192.168.0.1:1521:xe");
        infoReal.setUserId("masterid");
        infoReal.setUserPw("masterpw");
        
        return infoReal;
    }
    
}

// MemberConfig3.java
​
@Configuration
public class MemberConfig3 {
​
    @Autowired
    DataBaseConnectionInfo dataBaseConnectionInfoDev;
    
    @Autowired
    DataBaseConnectionInfo dataBaseConnectionInfoReal;
    
    @Bean
    public EMSInformationService informationService() {
        EMSInformationService info = new EMSInformationService();
        info.setInfo("Education Management System program was developed in 2015.");
        info.setCopyRight("COPYRIGHT(C) 2015 EMS CO., LTD. ALL RIGHT RESERVED. CONTACT MASTER FOR MORE INFORMATION.");
        info.setVer("The version is 1.0");
        info.setsYear(2015);
        info.setsMonth(1);
        info.setsDay(1);
        info.seteYear(2015);
        info.seteMonth(2);
        info.seteDay(28);
        
        ArrayList<String> developers = new ArrayList<String>();
        developers.add("Cheney.");
        developers.add("Eloy.");
        developers.add("Jasper.");
        developers.add("Dillon.");
        developers.add("Kian.");
        info.setDevelopers(developers);
        
        Map<String, String> administrators = new HashMap<String, String>();
        administrators.put("Cheney", "cheney@springPjt.org");
        administrators.put("Jasper", "jasper@springPjt.org");
        info.setAdministrators(administrators);
        
        Map<String, DataBaseConnectionInfo> dbInfos = new HashMap<String, DataBaseConnectionInfo>();
        dbInfos.put("dev", dataBaseConnectionInfoDev);
        dbInfos.put("real", dataBaseConnectionInfoReal);
        info.setDbInfos(dbInfos);
        
        return info;
    }
    
}

AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(MemberConfig1.class, MemberConfig2.class, MemberConfig3.class);

@Import 어노테이션

• 하나의 파일에 다른 설정 파일을 import해서, AnnotationConfigApplicationContext에서 해당 파일 하나만 명시해주면 된다.

// MemberConfigImport.java
​
@Configuration
@Import({MemberConfig2.class, MemberConfig3.class})
public class MemberConfigImport {
​
    @Bean
    public StudentDao studentDao() {
        return new StudentDao();
    }
    
    @Bean
    public StudentRegisterService registerService() {
        return new StudentRegisterService(studentDao());
    }
    
    @Bean
    public StudentModifyService modifyService() {
        return new StudentModifyService(studentDao());
    }
    
    @Bean
    public StudentSelectService selectService() {
        return new StudentSelectService(studentDao());
    }
    
    @Bean
    public StudentDeleteService deleteService() {
        return new StudentDeleteService(studentDao());
    }
    
    @Bean
    public StudentAllSelectService allSelectService() {
        return new StudentAllSelectService(studentDao());
    }
    
}

AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(MemberConfigImport.class);