[REFACTOR] AOP 기반 로깅 세팅

build.gradle

@@ -26,6 +26,7 @@ repositories {
 
 dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-actuator'
+	implementation 'org.springframework.boot:spring-boot-starter-aop'
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'org.springframework.boot:spring-boot-starter-security'
 	implementation 'org.springframework.boot:spring-boot-starter-validation'

src/main/java/com/deare/backend/global/aop/LoggingAspect.java

@@ -0,0 +1,34 @@
+package com.deare.backend.global.aop;
+
+import lombok.extern.slf4j.Slf4j;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.reflect.MethodSignature;
+import org.springframework.stereotype.Component;
+
+@Slf4j
+@Aspect
+@Component
+public class LoggingAspect {
+
+    @Around("execution(* com.deare.backend.api..*Service*.*(..))")
+    public Object logServiceMethod(ProceedingJoinPoint joinPoint) throws Throwable {
+        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
+        String className = joinPoint.getTarget().getClass().getSimpleName();
+        String methodName = signature.getName();
+
+        long start = System.currentTimeMillis();
+
+        try {
+            Object result = joinPoint.proceed();
+            long elapsed = System.currentTimeMillis() - start;
+            log.info("[{}] {} - {}ms", className, methodName, elapsed);
+            return result;
+        } catch (Exception e) {
+            long elapsed = System.currentTimeMillis() - start;
+            log.error("[{}] {} - {}ms - 예외: {}", className, methodName, elapsed, e.getMessage());
+            throw e;
+        }
+    }
+}

src/main/java/com/deare/backend/global/filter/MDCLoggingFilter.java

@@ -0,0 +1,48 @@
+package com.deare.backend.global.filter;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.slf4j.MDC;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import java.io.IOException;
+import java.util.UUID;
+
+@Component
+public class MDCLoggingFilter extends OncePerRequestFilter {
+
+    private static final String REQUEST_ID = "requestId";
+    private static final String USER_ID = "userId";
+    private static final String METHOD = "method";
+    private static final String URI = "uri";
+
+    @Override
+    protected void doFilterInternal(
+            HttpServletRequest request,
+            HttpServletResponse response,
+            FilterChain filterChain
+    ) throws ServletException, IOException {
+
+        try {
+            MDC.put(REQUEST_ID, UUID.randomUUID().toString().substring(0, 8));
+            MDC.put(METHOD, request.getMethod());
+            MDC.put(URI, request.getRequestURI());
+
+            Authentication auth = SecurityContextHolder.getContext().getAuthentication();
+            if (auth != null && auth.getPrincipal() instanceof Long userId) {
+                MDC.put(USER_ID, String.valueOf(userId));
+            } else {
+                MDC.put(USER_ID, "anonymous");
+            }
+
+            filterChain.doFilter(request, response);
+        } finally {
+            MDC.clear();
+        }
+    }
+}

src/main/resources/logback-spring.xml

@@ -3,7 +3,16 @@
 
     <!-- 공통 -->
     <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
-    <include resource="org/springframework/boot/logging/logback/console-appender.xml"/>
+
+    <property name="LOG_PATTERN"
+              value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level [%X{requestId}] [userId=%X{userId}] [%X{method} %X{uri}] %logger{36} - %msg%n"/>
+
+    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>${LOG_PATTERN}</pattern>
+            <charset>UTF-8</charset>
+        </encoder>
+    </appender>
 
     <!-- DEV -->
     <springProfile name="dev">