Spring Boot 防止接口被恶意刷新、暴力请求

/**
* @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);
}
}

/**
* @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
*/
@RequiredArgsConstructor
public 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("/**");
}
}