[#5]✨Feat: ExceptionHandler 작성

src/main/java/univ/yesummit/global/exception/GlobalExceptionHandler.java

@@ -0,0 +1,63 @@
+package univ.yesummit.global.exception;
+
+import com.auth0.jwt.exceptions.TokenExpiredException;
+import io.jsonwebtoken.JwtException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+import univ.yesummit.domain.member.exception.MemberException;
+import univ.yesummit.global.exception.dto.ErrorResponseVO;
+
+
+import java.util.Objects;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    /**
+     * 전역 예외 처리를 담당하는 GlobalExceptionHandler 클래스
+     * @RestControllerAdvice를 통해 전역적으로 예외를 처리할 수 있는 어노테이션을 사용
+     * 각 예외 처리 메서드는 특정한 예외가 발생했을 때 처리하고,
+     * ErrorResponseVO라는 객체를 반환하여 일관된 에러 응답을 제공
+     */
+
+    @ExceptionHandler(MemberException.class)
+    public ErrorResponseVO handleMemberException(MemberException e) {
+        ErrorCode errorCode = e.getErrorCode();
+
+        return getErrorResponse(errorCode);
+    }
+
+    @ExceptionHandler(value = JwtException.class)
+    public ResponseEntity<String> handleJwtException(JwtException ex) {
+        return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body("Invalid or expired token.");
+    }
+
+
+    @ResponseStatus(org.springframework.http.HttpStatus.FORBIDDEN)
+    @ExceptionHandler(TokenExpiredException.class)
+    public ErrorResponseVO handleTokenExpiredException(TokenExpiredException ex) {
+        return ErrorResponseVO.builder()
+                .name(ErrorCode.EXPIRED_ACCESS_TOKEN.name())
+                .errorCode(ErrorCode.EXPIRED_ACCESS_TOKEN.getErrorCode())
+                .message(ErrorCode.EXPIRED_ACCESS_TOKEN.getMessage()).build();
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ErrorResponseVO handleValidationException(MethodArgumentNotValidException ex) {
+        return ErrorResponseVO.builder()
+                .name("VALIDATION_ERROR")
+                .errorCode(ex.getStatusCode().value())
+                .message(Objects.requireNonNull(ex.getFieldError()).getDefaultMessage()).build();
+    }
+
+    private ErrorResponseVO getErrorResponse(ErrorCode errorCode) {
+        return ErrorResponseVO.builder()
+                .name(errorCode.name())
+                .errorCode(errorCode.getErrorCode())
+                .message(errorCode.getMessage()).build();
+    }
+}