一、全局异常处理

@Slf4j
@ControllerAdvice
public class GlobalExceptionHandler {
    /**
     * 处理自定义的业务异常
     *
     * @param req
     * @param e
     * @return
     */
    @ResponseBody
    @ExceptionHandler(value = BizException.class)
    public Message<String> bizExceptionHandler(HttpServletRequest req, BizException e) {
        log.error("发生业务异常！原因是：{}", e.getErrorMsg());
        if (!StringUtils.isNumeric(e.getMessage())) {
            return Message.error(e.getMessage());
        }
        return Message.error(I18nUtil.getMes(e.getErrorMsg()));
    }
}

二、拦截器

@Slf4j
@Service
public class PayLimitHandlerInterceptor implements HandlerInterceptor {
    @Autowired
    private SystemQuotaService systemQuotaService;
    @Value("${interceptor.doPayLimit:true}")
    private Boolean doPayLimit;
    //在header里用的字段是userid和accountid
    //地域信息header里也是regionid
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        log.debug("校验是否有有付费版配额:{}", request.getRequestURI());
        if (doPayLimit
                && !isLimit(request, handler)) {
            log.warn("用户没有付费版配额，功能不可用:{},用户信息：{}",
                    request.getRequestURI(),
                    JSON.toJSONString(request.getSession().getAttribute(Const.SESSION_USER)));
            throw new NoPayQuotaException("用户没有付费版配额，功能不可用");
        }
        return Boolean.TRUE;
    }
    /**
     * 判断是否需要判断有效配额
     *
     * @return 需要返回true，否者返回false
     */
    private boolean isLimit(HttpServletRequest request, Object handler) {
        if (!(handler instanceof HandlerMethod)) {
            return Boolean.TRUE;
        }
        PayQuotaLimit payQuotaLimit = ((HandlerMethod) handler).getMethodAnnotation(PayQuotaLimit.class);
        if (Objects.nonNull(payQuotaLimit)
                && payQuotaLimit.limit()) {
            return systemQuotaService.isExistPayQuota(request.getHeader("accountid")) > 0;
        }
        return Boolean.TRUE;
    }
}

@Configuration
public class InterceptorConfig implements WebMvcConfigurer {
    @Autowired
    private PayLimitHandlerInterceptor payLimitHandlerInterceptor;
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(payLimitHandlerInterceptor).addPathPatterns("/**");
    }
}