$$config title: [Spring] AOP를 사용하는 방법 (XML 기반, @AspectJ 어노테이션 기반) keywords: - IT - AOP - xml - 어노테이션 $$ # 1. XML 기반 ## `src/main/java/egov.lib.util/ExampleAop.java` ```xml package egov.lib.util; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class ExampleAop { private static final Logger logger = LoggerFactory.getLogger(ExampleAop.class); public void beforeMethod(JoinPoint joinPoint) throws Exception { logger.info("사용자 요청" + joinPoint.getTarget()); System.out.println("사용자 요청" + joinPoint.getTarget()); } public void afterExceptionMethod(JoinPoint joinPoint, Exception exception) throws Exception { // 이외에도 예외처리에는 많은 방법이 존재. ErrorController로 제어 등.. logger.error("ST에러발생================="); logger.error("에러위치" + exception.getClass()); logger.error("에러내용" + exception.getMessage()); logger.error("ED에러발생================="); throw exception; } public void afterMethod(JoinPoint joinPoint) throws Exception { logger.info("메소드 종료"); } public Object aroundMethod(ProceedingJoinPoint joinPoint) throws Throwable { // 시간 측정 long st = System.currentTimeMillis(); System.out.println("공통기능"); // 핵심기능 Object rtn = joinPoint.proceed(); // 시간 측정 long ed = System.currentTimeMillis(); System.out.println("공통기능2"); // 성능 측정 : 소요시간 System.out.println("걸린시간" + (ed - st)); return rtn; } } ``` ## `dispatcher-sevlet.xml` ```xml

``` # 2. @AspectJ 어노테이션 기반 1. `@Aspect` 어노테이션을 통해 Spring은 Aspect를 Aop설정 시 등록. 2. `@Pointcut` 어노테이션은 Aspect를 적용시킬 메소드, 빈, 클래스, 패키지등을 선택. 3. `@Before`, `@AfterThrowing`, `@After`, `@Around` 어노테이션은 PointCut에 적용할 Advice. ``` package egov.lib.util; import org.aspectj.lang.JoinPoint; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.After; import org.aspectj.lang.annotation.AfterThrowing; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Before; import org.aspectj.lang.annotation.Pointcut; import org.slf4j.Logger; import org.slf4j.LoggerFactory; public class ExampleAop { private static final Logger logger = LoggerFactory.getLogger(ExampleAop.class); @Pointcut("excution(* egov.**.web.*Controller.*(..))") public void aspectMethod(){ } @Before("aspectMethod()") public void beforeMethod(JoinPoint joinPoint) throws Exception { logger.info("사용자 요청" + joinPoint.getTarget()); System.out.println("사용자 요청" + joinPoint.getTarget()); } @AfterThrowing(pointcut = "aspectMethod()", throwing = "exception") public void afterExceptionMethod(JoinPoint joinPoint, Exception exception) throws Exception { // 이외에도 예외처리에는 많은 방법이 존재합니다. ErrorController로 제어등.. logger.error("ST에러발생================="); logger.error("에러위치" + exception.getClass()); logger.error("에러내용" + exception.getMessage()); logger.error("ED에러발생================="); throw exception; } @After("aspectMethod()") public void afterMethod(JoinPoint joinPoint) throws Exception { logger.info("메소드 종료"); } @Around("aspectMethod()") public Object aroundMethod(ProceedingJoinPoint joinPoint) throws Throwable { // 시간 측정 long st = System.currentTimeMillis(); System.out.println("공통기능"); // 핵심기능 Object rtn = joinPoint.proceed(); // 시간 측정 long ed = System.currentTimeMillis(); System.out.println("공통기능2"); // 성능 측정 : 소요시간 System.out.println("걸린시간" + (ed - st)); return rtn; } } ```