🍌1. 统计接口调用耗时/黑白名单配置

1. 黑名单配置

• 黑名单就是那些被禁止访问的URL
• 创建自定义过滤器 BlackListUrlFilter，并配置黑名单地址列表blacklistUrl
• 如果有其他需求，还可以实现自定义规则的过滤器来满足特定的过滤要求

/**
 * 黑名单过滤器
 *
 * @author canghe
 */
@Component
public class BlackListUrlFilter extends AbstractGatewayFilterFactory
{
    @Override
    public GatewayFilter apply(Config config)
    {
        return (exchange, chain) -> {

            String url = exchange.getRequest().getURI().getPath();
            if (config.matchBlacklist(url))
            {
                return ServletUtils.webFluxResponseWriter(exchange.getResponse(), "请求地址不允许访问");
            }

            return chain.filter(exchange);
        };
    }

    public BlackListUrlFilter()
    {
        super(Config.class);
    }

    public static class Config
    {
        private List blacklistUrl;

        private List blacklistUrlPattern = new ArrayList<>();

        public boolean matchBlacklist(String url)
        {
            return !blacklistUrlPattern.isEmpty() && blacklistUrlPattern.stream().anyMatch(p -> p.matcher(url).find());
        }

      ...