Feat: AOP 예제 추가 (#10)

Author: soyeon207

spring-test-server/build.gradle

@@ -0,0 +1,3 @@
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-aop'
+}

spring-test-server/src/main/java/velog/soyeon/spring/aop/AopController.java

@@ -0,0 +1,18 @@
+package velog.soyeon.spring.aop;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/aop")
+public class AopController {
+
+//    @LogExecutionTime
+    @GetMapping("/test")
+    public boolean test() throws InterruptedException {
+        Thread.sleep(40);
+        return true;
+    }
+
+}

spring-test-server/src/main/java/velog/soyeon/spring/aop/LogAspect.java

@@ -0,0 +1,29 @@
+package velog.soyeon.spring.aop;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StopWatch;
+
+@Aspect    // Aspect 명시
+@Component // 스프링 빈 등록
+public class LogAspect {
+
+    //로거 생성
+    Logger logger = LoggerFactory.getLogger(LogAspect.class);
+
+    // @Around("@annotation(LogExecutionTime)")
+    @Around("execution(* velog.soyeon.spring.aop.*.*(..))") // 메소드 실행전후에 공통 로직을 적용할 때 사용
+    public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable{
+        StopWatch stopWatch = new StopWatch();
+        stopWatch.start();                      // 스탑워치 시작
+        Object proceed = joinPoint.proceed();   // 메소드 실행
+        stopWatch.stop();                       // 스탑워치 끝
+        logger.info(stopWatch.prettyPrint());   // 로깅
+        return proceed;
+    }
+
+}

spring-test-server/src/main/java/velog/soyeon/spring/aop/LogExecutionTime.java

@@ -0,0 +1,11 @@
+package velog.soyeon.spring.aop;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.METHOD)             // 해당 어노테이션을 어디에서 사용할 수 있을지 결정
+@Retention(RetentionPolicy.RUNTIME)     // 어노테이션 정보 유지 위치
+public @interface LogExecutionTime {
+}