在实际项目使用中，必须要考虑服务的安全性，当服务部署到互联网以后，就要考虑服务被恶意请求和暴力攻击的情况，下面的教程，通过Spring Boot提供的HandlerInterceptor和Redis 针对 Url + ip在一定时间内访问的次数来将ip禁用，可以根据自己的业务需求进行相应的修改，以达到自己的目的。
首先创建一个自定义的拦截器类，也是最核心的代码。
/** * @ProjectName: cdkj-framework * @Package: com.cdkjframework.core.spring.filter * @ClassName: FilterHandlerInterceptor * @Description: 拦截过滤 * @Author: xiaLin * @Date: 2022/6/22 13:36 * @Version: 1.0 */public class FilterHandlerInterceptor implements HandlerInterceptor { /** * 日志 */ private LogUtils logUtils = LogUtils.getLogger(FilterHandlerInterceptor.class); /** * redis锁 */ private final RedisLettuceLock redisLettuceLock; /** * IP头部变量(可能通过Nginx代理后) */ private static final String HEADER_IP = "X-Real-IP"; /** * 锁IP请求URL地址KEY */ private static final String LOCK_IP_URL_KEY = "lock_ip_"; /** * IP请求URL地址时间 */ private static final String IP_URL_REQ_TIME = "ip_url_times_"; /** * 极限时间 */ private static final long LIMIT_TIMES = 5; /** * IP锁定时间 秒 */ private static final int IP_LOCK_TIME = 60; /** * 构建函数 */ public FilterHandlerInterceptor(RedisLettuceLock redisLettuceLock) { this.redisLettuceLock = redisLettuceLock; } /** * 预处理 * * @param request 请求 * @param response 响应 * @param o 参数 * @return 返回结果 * @throws Exception 异常信息 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object o) throws Exception { String ip = request.getHeader(HEADER_IP); if (StringUtils.isNullAndSpaceOrEmpty(ip)) { ip = request.getRemoteAddr(); } logUtils.info("request 请求地址 Uri={}，ip={}", request.getRequestURI(), ip); if (ipIsLock(ip)) { logUtils.info("ip访问被禁止={}", ip); ResponseBuilder builder = ResponseBuilder.failBuilder("ip访问被禁止"); returnJson(response, builder); return false; } if (!addRequest(ip, request.getRequestURI())) { ResponseBuilder builder = ResponseBuilder.failBuilder("ip访问被禁止"); returnJson(response, builder); return false; } return true; } @Override public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception { } @Override public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception { } /** * IP 是否已锁 * * @param ip IP 地址 * @return 返回是否成功 */ private Boolean ipIsLock(String ip) { if (redisLettuceLock.lock(LOCK_IP_URL_KEY + ip)) { return true; } return false; } /** * 添加请求信息 * * @param ip IP 地址 * @param uri 请求路径 * @return 返回是否成功 */ private Boolean addRequest(String ip, String uri) { String key = IP_URL_REQ_TIME + ip + uri; if (RedisUtils.syncExists(key)) { long time = RedisUtils.syncIncr(key, IntegerConsts.ONE); if (time >= LIMIT_TIMES) { redisLettuceLock.lock(LOCK_IP_URL_KEY + ip, IP_LOCK_TIME, ip); return false; } } else { redisLettuceLock.lock(key, (long) IntegerConsts.ONE, IntegerConsts.ONE); } return true; } /** * 返回结果 * * @param response 响应 * @param builder 返回结果 * @throws Exception 异常信息 */ private void returnJson(HttpServletResponse response, ResponseBuilder builder) throws Exception { ResponseUtils.out(response, builder); }}最后将上面自定义的拦截器通过WebMvcConfigurer下的registry.addInterceptor添加一下，就生效了。
/** * @ProjectName: cdkj-framework * @Package: com.cdkjframework.core.spring.filter * @ClassName: WebMvcFilterConfigurerAdapter * @Description: java类作用描述 * @Author: xiaLin * @Date: 2022/6/22 13:37 * @Version: 1.0 */@RequiredArgsConstructorpublic class WebMvcFilterConfigurerAdapter implements WebMvcConfigurer { /** * redis锁 */ private final RedisLettuceLock redisLettuceLock; /** * 过虑句柄拦截器 * * @return 返回拦截器 */ @Bean private FilterHandlerInterceptor filterHandlerInterceptor() { return new FilterHandlerInterceptor(redisLettuceLock); } /** * 添加 拦截器 * * @param registry 拦截器注册 */ @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(filterHandlerInterceptor()).addPathPatterns("/**"); }}自己可以写一个for循环来测试改功能，这里就不具体详细介绍了。
文章中的工具类可参考：https://gitee.com/cdkjframework/common/tree/1.0.2/