自定义JSON返回类型返回给前端数据

public class RestErrorResponse {
    private Integer errorCode;
    private String message;
    private Object details;
    private JSONObject result;


    private RestErrorResponse() {
    }

    public static RestErrorResponse build() {
        return new RestErrorResponse();
    }

    public Integer getErrorCode() {
        return errorCode;
    }

    public RestErrorResponse setErrorCode(Integer errorCode) {
        this.errorCode = errorCode;
        return this;
    }

    public String getMessage() {
        return message;
    }

    public RestErrorResponse setMessage(String message) {
        this.message = message;
        return this;
    }

    public Object getDetails() {
        return details;
    }

    public RestErrorResponse setDetails(Object details) {
        this.details = details;
        return this;
    }

    public void setResult(JSONObject result) {
        this.result = result;
    }

    @Override
    public String toString() {
        return getResult();
    }

    public String getResult() {
        result = new JSONObject();
        JSONObject errorJson = new JSONObject();
        errorJson.put("code", errorCode);
        errorJson.put("message", message);
        errorJson.put("details", details);
        result.put("error", errorJson);
        return result.toString();
    }


}

public enum RestResponseEnum {
    /* */
    SUCCESS(200, "成功"),
    UNKNOWN_ERROR(-1, "未知错误"),

    EQUIPMENT_ERROR(511, "操作设备失败"),

    EXCEL_DOWNLOAD_ERROR(516, "EXCEL下载失败"),
    EXCEL_UPLOAD_ERROR(517, "EXCEL上传失败"),
    /* error result about login*/
    LOGIN_ERROR(501, "用户登录失败"),
    ADMIN_LOGIN_ERROR(502, "管理员登录失败"),

    /*  error result about user*/
    USER_ERROR(506, "操作用户失败");

    private Integer code;
    private String msg;

    RestResponseEnum(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public Integer getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }

}

@RestController
public class EquipmentController {

    @Autowired
    private EquipmentService equipmentService;

    @DeleteMapping("/v1/equipment")
    public Object deleteEquipment(HttpServletRequest request, HttpServletResponse response, @RequestParam("equipmentId") String equipmentId) {
        boolean isSuccess = equipmentService.delete(equipmentId);
        if (isSuccess) {
            response.setStatus(RestResponseEnum.SUCCESS.getCode());
            return equipmentId;
        }
        return RestErrorResponse.build().setErrorCode(RestResponseEnum.EQUIPMENT_ERROR.getCode()).setMessage(RestResponseEnum.EQUIPMENT_ERROR.getMsg()).getResult();
    }