✨ gateway-断言-自定义断言

cloud-demo/gateway/src/main/java/cn/bunny/gateway/predicates/VipRoutePredicateFactory.java

@@ -0,0 +1,50 @@
+package cn.bunny.gateway.predicates;
+
+import jakarta.validation.constraints.NotEmpty;
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.cloud.gateway.handler.predicate.AbstractRoutePredicateFactory;
+import org.springframework.cloud.gateway.handler.predicate.GatewayPredicate;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.server.ServerWebExchange;
+
+import java.util.List;
+import java.util.function.Predicate;
+
+@Component
+public class VipRoutePredicateFactory extends AbstractRoutePredicateFactory<VipRoutePredicateFactory.Config> {
+
+    public VipRoutePredicateFactory() {
+        super(Config.class);
+    }
+
+    @Override
+    public List<String> shortcutFieldOrder() {
+        return List.of("param", "value");
+    }
+
+    @Override
+    public Predicate<ServerWebExchange> apply(Config config) {
+        return (GatewayPredicate) serverWebExchange -> {
+            ServerHttpRequest request = serverWebExchange.getRequest();
+
+            String first = request.getQueryParams().getFirst(config.param);
+
+            return StringUtils.hasText(first) && first.equals(config.value);
+        };
+    }
+
+    @Getter
+    @Setter
+    @Validated
+    public static class Config {
+        @NotEmpty
+        private String param;
+
+        @NotEmpty
+        private String value;
+    }
+}

cloud-demo/gateway/src/main/resources/application-route.yaml

@@ -13,5 +13,23 @@ spring:
               args:
                 patterns: /api/product/**
                 matchTrailingSlash: true
+        - id: bing-route
+          uri: https://cn.bing.com/
+          predicates:
+            - name: Path
+              args:
+                patterns: /search
+            - name: Query
+              args:
+                param: q
+                regexp: 被世界温柔以待
+            # 短写法
+            # - Vip=User,bunny
+
+            # 长写法
+            - name: Vip
+              args:
+                param: user
+                value: bunny