diff --git a/src/main/java/com/example/week2/builder/App1.java b/src/main/java/com/example/week2/builder/App1.java
index b5f9553..bb0a5b5 100644
--- a/src/main/java/com/example/week2/builder/App1.java
+++ b/src/main/java/com/example/week2/builder/App1.java
@@ -1,8 +1,17 @@
 package com.example.week2.builder;
 
+import com.example.week2.exception.CustomException;
+import com.example.week2.exception.ErrorCode;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 public class App1 {
 
+  private static final Logger log = LoggerFactory.getLogger(App1.class);  //@Slf4j 입력 시 자동 생성
+
   public static void main(String[] args) {
+    log.error("에러!");
 
+    throw new CustomException(ErrorCode.INVALID_REQUEST);
   }
 }
diff --git a/src/main/java/com/example/week2/exception/CustomException.java b/src/main/java/com/example/week2/exception/CustomException.java
index 49fb605..a8615cb 100644
--- a/src/main/java/com/example/week2/exception/CustomException.java
+++ b/src/main/java/com/example/week2/exception/CustomException.java
@@ -8,7 +8,7 @@ public class CustomException extends RuntimeException{
   private final ErrorCode errorCode;
 
   public CustomException(ErrorCode errorCode) {
-    super(errorCode.getMessage());
+    super(errorCode.getMessage());    //에러 메세지 출력
     this.errorCode = errorCode;
   }
 }
diff --git a/src/main/java/com/example/week2/exception/ErrorCode.java b/src/main/java/com/example/week2/exception/ErrorCode.java
index 4d28422..ec63747 100644
--- a/src/main/java/com/example/week2/exception/ErrorCode.java
+++ b/src/main/java/com/example/week2/exception/ErrorCode.java
@@ -8,8 +8,8 @@
 @AllArgsConstructor
 public enum ErrorCode {
 
-  INVALID_REQUEST(HttpStatus.BAD_REQUEST, "잘못된 요청이 들어왔습니다"),;
-
+  INVALID_REQUEST(HttpStatus.BAD_REQUEST, "잘못된 요청이 들어왔습니다"),
+  SEJONG_UNIV(HttpStatus.UNSUPPORTED_MEDIA_TYPE, "가나다라마바사");  //에러 타입과 에러메세지 형식
 
   private final HttpStatus status;
   private final String message;
diff --git a/src/main/java/com/example/week2/exception/ErrorResponse.java b/src/main/java/com/example/week2/exception/ErrorResponse.java
index 91377ad..be6905a 100644
--- a/src/main/java/com/example/week2/exception/ErrorResponse.java
+++ b/src/main/java/com/example/week2/exception/ErrorResponse.java
@@ -8,7 +8,6 @@
 @Builder
 @AllArgsConstructor
 public class ErrorResponse {
-
   private ErrorCode errorCode;
   private String errorMessage;
 }
diff --git a/src/main/java/com/example/week2/exception/ExceptionController.java b/src/main/java/com/example/week2/exception/ExceptionController.java
index 859ce8e..8dcbc8b 100644
--- a/src/main/java/com/example/week2/exception/ExceptionController.java
+++ b/src/main/java/com/example/week2/exception/ExceptionController.java
@@ -21,4 +21,7 @@ public void throwIllegalArgumentException() {
     throw new IllegalArgumentException();
   }
 
+  @GetMapping("/custom")
+  public void throwCustomException() {throw new CustomException(ErrorCode.SEJONG_UNIV);}
+
 }
diff --git a/src/main/java/com/example/week2/exception/GlobalExceptionHandler.java b/src/main/java/com/example/week2/exception/GlobalExceptionHandler.java
index 91a694e..ab5c867 100644
--- a/src/main/java/com/example/week2/exception/GlobalExceptionHandler.java
+++ b/src/main/java/com/example/week2/exception/GlobalExceptionHandler.java
@@ -1,13 +1,21 @@
 package com.example.week2.exception;
 
 import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
+import org.springframework.web.servlet.View;
 
 @RestControllerAdvice
 @Slf4j
 public class GlobalExceptionHandler {
 
+  private final View error;
+
+  public GlobalExceptionHandler(View error) {
+    this.error = error;
+  }
+
   @ExceptionHandler(NullPointerException.class)
   public String handleNullPointerException() {
     log.error("NullPointer Exception 처리 시작");
@@ -19,4 +27,20 @@ public String handleInternalError() {
     log.error("InternalError 처리 시작");
     return "InternalError 핸들링";
   }
+
+  @ExceptionHandler(CustomException.class)
+  public ResponseEntity<ErrorResponse> handleCustomException(CustomException e){
+    log.error("CustomException 발생: {}", e.getMessage(), e);
+
+    ErrorCode errorCode = e.getErrorCode();
+
+    ErrorResponse response = ErrorResponse.builder()
+            .errorCode(errorCode)
+            .errorMessage(errorCode.getMessage())
+            .build();
+
+    return ResponseEntity.status(errorCode.getStatus()).body(response);
+  }
+
+
 }