spring-custom-aop -> spring-aop (#1489)

spring-aop/src/main/java/org/baeldung/Application.java

@@ -0,0 +1,13 @@
+package org.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

spring-aop/src/main/java/org/baeldung/ExampleAspect.java

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+package org.baeldung;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.springframework.stereotype.Component;
+
+@Aspect
+@Component
+public class ExampleAspect {
+
+    @Around("@annotation(LogExecutionTime)")
+    public Object logExecutionTime(ProceedingJoinPoint joinPoint) throws Throwable {
+        final long start = System.currentTimeMillis();
+
+        final Object proceed = joinPoint.proceed();
+
+        final long executionTime = System.currentTimeMillis() - start;
+
+        System.out.println(joinPoint.getSignature() + " executed in " + executionTime + "ms");
+
+        return proceed;
+    }
+
+}

spring-aop/src/main/java/org/baeldung/LogExecutionTime.java

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+package org.baeldung;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.METHOD)
+public @interface LogExecutionTime {
+}

spring-aop/src/main/java/org/baeldung/Service.java

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+package org.baeldung;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Service {
+
+    @LogExecutionTime
+    public void serve() throws InterruptedException {
+        Thread.sleep(2000);
+    }
+}