Spring云网关路径路由谓词匹配失败

Question

在下面的spring cloud gateway配置中，我试图用/favicon.ico匹配路径结束，但它不能匹配路径:/gitbooks/100/abc/favicon.ico

spring:
  cloud:
    gateway:
      routes:
        - id: favicon
          uri: forward:///favicon.ico
          predicates:
            - Path=**/favicon.ico

spring cloud gateway打印以下日志：

2020-02-04 22:57:35.703 TRACE 28356 --- [ctor-http-nio-2] o.s.c.g.h.p.RoutePredicateFactory        : Pattern "[**/favicon.ico]" does not match against value "/gitBooks/100/abc/favicon.ico"
2020-02-04 22:57:35.703 TRACE 28356 --- [ctor-http-nio-2] o.s.c.g.h.RoutePredicateHandlerMapping   : No RouteDefinition found for [Exchange: GET http://localhost:8080/gitBooks/100/abc/favicon.ico]

Answer 1

我不知道为什么PathMatcher不能工作，最后我写了一个定制的谓词：

spring:
  cloud:
    gateway:
      routes:
        - id: favicon
          uri: forward:///favicon.ico
          predicates:
            - Favicon=

@Component
public class FaviconRoutePredicateFactory extends AbstractRoutePredicateFactory<FaviconRoutePredicateFactory.Config> {
    private static final Log log = LogFactory.getLog(FaviconRoutePredicateFactory.class);


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

    @Override
    public Predicate<ServerWebExchange> apply(Config config) {
        return exchange -> {
            String path = exchange.getRequest().getURI().getRawPath();
            return !path.equals("/favicon.ico") && path.endsWith("favicon.ico");
        };
    }

    public static class Config {
    }
}