[Feat]: API 요청 성공 응답 클래스 구현

Author: shihan00321

back/src/main/java/com/back/global/common/ApiResponse.java

@@ -0,0 +1,37 @@
+package com.back.global.common;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import org.springframework.http.HttpStatus;
+
+/**
+ * 공통 응답 형태
+ * {
+ *   "data": { ... },
+ *   "message": "성공적으로 조회되었습니다.",
+ *   "status": 200
+ * }
+ */
+@Getter
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class ApiResponse<T> {
+
+    private final T data;
+    private final String message;
+    private final int status;
+
+    private ApiResponse(T data, String message, int status) {
+        this.data = data;
+        this.message = message;
+        this.status = status;
+    }
+
+    public static <T> ApiResponse<T> success(T data, String message) {
+        return new ApiResponse<>(data, message, HttpStatus.OK.value());
+    }
+
+    public static <T> ApiResponse<T> success(T data, String message, HttpStatus status) {
+        return new ApiResponse<>(data, message, status.value());
+    }
+}