package com.ruoyi.gateway.filter;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Pattern;
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import org.springframework.cloud.gateway.filter.GatewayFilter;
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import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
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import org.springframework.http.server.reactive.ServerHttpResponse;
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import org.springframework.stereotype.Component;
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import com.alibaba.fastjson.JSON;
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import com.ruoyi.common.core.web.domain.AjaxResult;
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import reactor.core.publisher.Mono;
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/**
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* 黑名单过滤器
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*
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* @author ruoyi
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*/
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@Component
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public class BlackListUrlFilter extends AbstractGatewayFilterFactory<BlackListUrlFilter.Config>
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{
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@Override
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public GatewayFilter apply(Config config)
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{
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return (exchange, chain) -> {
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String url = exchange.getRequest().getURI().getPath();
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if (config.matchBlacklist(url))
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{
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ServerHttpResponse response = exchange.getResponse();
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response.getHeaders().add("Content-Type", "application/json;charset=UTF-8");
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return exchange.getResponse().writeWith(
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Mono.just(response.bufferFactory().wrap(JSON.toJSONBytes(AjaxResult.error("请求地址不允许访问")))));
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}
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return chain.filter(exchange);
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};
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}
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public BlackListUrlFilter()
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{
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super(Config.class);
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}
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public static class Config
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{
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private List<String> blacklistUrl;
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private List<Pattern> blacklistUrlPattern = new ArrayList<>();
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public boolean matchBlacklist(String url)
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{
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return blacklistUrlPattern.isEmpty() ? false : blacklistUrlPattern.stream().filter(p -> p.matcher(url).find()).findAny().isPresent();
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}
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public List<String> getBlacklistUrl()
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{
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return blacklistUrl;
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}
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public void setBlacklistUrl(List<String> blacklistUrl)
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{
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this.blacklistUrl = blacklistUrl;
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this.blacklistUrlPattern.clear();
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this.blacklistUrl.forEach(url -> {
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this.blacklistUrlPattern.add(Pattern.compile(url.replaceAll("\\*\\*", "(.*?)"), Pattern.CASE_INSENSITIVE));
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});
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}
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}
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}
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