#vulnerable code 
                                @Async
    protected void handleLog(final JoinPoint joinPoint, final Exception e)
    {
        try
        {
            // 获得注解
            Log controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null)
            {
                return;
            }

            // 获取当前的用户
            User currentUser = ShiroUtils.getUser();

            // *========数据库日志=========*//
            OperLog operLog = new OperLog();
            operLog.setStatus(BusinessStatus.SUCCESS);
            // 请求的地址
            String ip = ShiroUtils.getIp();
            operLog.setOperIp(ip);
            // 操作地点
            operLog.setOperLocation(AddressUtils.getRealAddressByIP(ip));

            operLog.setOperUrl(ServletUtils.getRequest().getRequestURI());
            if (currentUser != null)
            {
                operLog.setOperName(currentUser.getLoginName());
                operLog.setDeptName(currentUser.getDept().getDeptName());
            }

            if (e != null)
            {
                operLog.setStatus(BusinessStatus.FAIL);
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 处理设置注解上的参数
            getControllerMethodDescription(controllerLog, operLog);
            // 保存数据库
            operLogService.insertOperlog(operLog);
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    } 
                            #location 29 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                @Async
    protected void handleLog(final JoinPoint joinPoint, final Exception e)
    {
        try
        {
            // 获得注解
            Log controllerLog = getAnnotationLog(joinPoint);
            if (controllerLog == null)
            {
                return;
            }

            // 获取当前的用户
            User currentUser = ShiroUtils.getUser();

            // *========数据库日志=========*//
            OperLog operLog = new OperLog();
            operLog.setStatus(BusinessStatus.SUCCESS);
            // 请求的地址
            String ip = ShiroUtils.getIp();
            operLog.setOperIp(ip);
            // 操作地点
            operLog.setOperLocation(AddressUtils.getRealAddressByIP(ip));

            operLog.setOperUrl(ServletUtils.getRequest().getRequestURI());
            if (currentUser != null)
            {
                operLog.setOperName(currentUser.getLoginName());
                if (StringUtils.isNotNull(currentUser.getDept())
                        && StringUtils.isEmpty(currentUser.getDept().getDeptName()))
                {
                    operLog.setDeptName(currentUser.getDept().getDeptName());
                }
            }

            if (e != null)
            {
                operLog.setStatus(BusinessStatus.FAIL);
                operLog.setErrorMsg(StringUtils.substring(e.getMessage(), 0, 2000));
            }
            // 设置方法名称
            String className = joinPoint.getTarget().getClass().getName();
            String methodName = joinPoint.getSignature().getName();
            operLog.setMethod(className + "." + methodName + "()");
            // 处理设置注解上的参数
            getControllerMethodDescription(controllerLog, operLog);
            // 保存数据库
            operLogService.insertOperlog(operLog);
        }
        catch (Exception exp)
        {
            // 记录本地异常日志
            log.error("==前置通知异常==");
            log.error("异常信息:{}", exp.getMessage());
            exp.printStackTrace();
        }
    }