CustomResponse.java.md

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.io.Serializable;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Builder
public class ApiResponse<T> implements Serializable {

    private static final long serialVersionUID = 1L;
    private int code;
    private String message;
    private boolean success;
    private T data;

}

package com.fedoubt.common.message;

import org.springframework.http.ResponseEntity;

public class ResponseUtils {

    public static <T> ApiResponse<T> success(int code, String message, T data) {
       return ApiResponse.<T>builder().code(code).message(message).success(true).data(data).build();
    }

    public static <T> ApiResponse<T> success(int code, T data) {
        return success(code, "系統成功", data);
    }

    public static <T> ApiResponse<T> success(T data) {
        return success(200, data);
    }

    public static <T> ApiResponse<T> success() {
        return ApiResponse.<T>builder().code(200).success(true).build();
    }

    public static <T> ApiResponse<T> error(int code, String message) {
        return ApiResponse.<T>builder().code(code).message(message).success(false).build();
    }

    public static <T> ApiResponse<T> error(int code, String message, T data) {
       return ApiResponse.<T>builder().code(code).message(message).success(false).data(data).build();
    }

    public static <T> ApiResponse<T> error(int code, T data) {
        return error(code, "系統錯誤", data);
    }

    public static <T> ApiResponse<T> error(T data) {
        return error(500, data);
    }

    public static <T> ApiResponse<T> error() {
        return ApiResponse.<T>builder().code(500).success(false).build();
    }

    public static <T> ResponseEntity<ApiResponse<T>> customResponse(ApiStatus httpStatus){
        return ResponseEntity.ok(
                error(
                        httpStatus.value(),
                        httpStatus.getReasonPhrase()
                )
        );
    }

    public static <T> ResponseEntity<ApiResponse<T>> handleCustomException(int code, String message) {
        return ResponseEntity.status(code)
                .body(error(code, message));
    }

}

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