网关支持黑名单配置

ruoyi-gateway/src/main/java/com/ruoyi/gateway/filter/BlackListUrlFilter.java

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