[feat] global response 추가

src/main/java/com/ourmenu/backend/global/exception/CustomException.java

@@ -0,0 +1,20 @@
+package com.ourmenu.backend.global.exception;
+
+public class CustomException extends RuntimeException {
+
+    private final ErrorCode errorCode;
+
+    public CustomException(String message, ErrorCode errorCode) {
+        super(message);
+        this.errorCode = errorCode;
+    }
+
+    public CustomException(ErrorCode errorCode) {
+        super(errorCode.getMessage());
+        this.errorCode = errorCode;
+    }
+
+    public ErrorCode getErrorCode() {
+        return errorCode;
+    }
+}

src/main/java/com/ourmenu/backend/global/exception/ErrorCode.java

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+package com.ourmenu.backend.global.exception;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+@AllArgsConstructor
+@Getter
+public enum ErrorCode {
+
+    INTERNAL_SERVER(HttpStatus.INTERNAL_SERVER_ERROR, "G500", "서버 내부에서 에러가 발생하였습니다");
+
+    private final HttpStatus httpStatus;
+
+    private final String code;
+
+    private final String message;
+}

src/main/java/com/ourmenu/backend/global/exception/ErrorResponse.java

@@ -0,0 +1,23 @@
+package com.ourmenu.backend.global.exception;
+
+import lombok.Builder;
+
+@Builder
+public record ErrorResponse(int status, String code, String message) {
+
+    public static ErrorResponse of(ErrorCode errorCode) {
+        return ErrorResponse.builder()
+                .status(errorCode.getHttpStatus().value())
+                .code(errorCode.getCode())
+                .message(errorCode.getMessage())
+                .build();
+    }
+
+    public static ErrorResponse of(String message, ErrorCode errorCode) {
+        return ErrorResponse.builder()
+                .status(errorCode.getHttpStatus().value())
+                .code(errorCode.getCode())
+                .message(message)
+                .build();
+    }
+}

src/main/java/com/ourmenu/backend/global/exception/GlobalExceptionHandler.java

@@ -0,0 +1,27 @@
+package com.ourmenu.backend.global.exception;
+
+import com.ourmenu.backend.global.response.ApiResponse;
+import com.ourmenu.backend.global.response.util.ApiUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@RestControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(RuntimeException.class)
+    public ApiResponse<?> handleException(RuntimeException e) {
+        return handleException(e, ErrorResponse.of(ErrorCode.INTERNAL_SERVER));
+    }
+
+    @ExceptionHandler(CustomException.class)
+    public ApiResponse<?> handleCustomException(CustomException e) {
+        return handleException(e, ErrorResponse.of(e.getMessage(), e.getErrorCode()));
+    }
+
+    public ApiResponse<?> handleException(Exception e, ErrorResponse errorResponse) {
+        log.error("{}: {}", errorResponse.code(), e.getMessage());
+        return ApiUtil.error(errorResponse);
+    }
+}

src/main/java/com/ourmenu/backend/global/response/ApiResponse.java

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+package com.ourmenu.backend.global.response;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.ourmenu.backend.global.exception.ErrorResponse;
+import lombok.AllArgsConstructor;
+
+@AllArgsConstructor
+public class ApiResponse<T> {
+
+    private final boolean isSuccess;
+
+    @JsonProperty(value = "response")
+    private final T response;
+
+    @JsonProperty(value = "errorResponse")
+    private final ErrorResponse errorResponse;
+}

src/main/java/com/ourmenu/backend/global/response/util/ApiUtil.java

@@ -0,0 +1,18 @@
+package com.ourmenu.backend.global.response.util;
+
+import com.ourmenu.backend.global.exception.ErrorResponse;
+import com.ourmenu.backend.global.response.ApiResponse;
+
+public class ApiUtil {
+
+    private ApiUtil() {
+    }
+
+    public static <T> ApiResponse<T> success(T response) {
+        return new ApiResponse<>(true, response, null);
+    }
+
+    public static ApiResponse<?> error(ErrorResponse errorResponse) {
+        return new ApiResponse<>(false, null, errorResponse);
+    }
+}