在项目中有个特殊的模块，可走可不走gateway，如果让他走gateway，可以定义一个忽略全局过滤器判断的过滤器。

定义IgnoreGlobalFilter

  1. @Component
  2. public class IgnoreGlobalFilterFactor extends AbstractGatewayFilterFactory<IgnoreGlobalFilterFactor.Config> {
  5.    public IgnoreGlobalFilterFactor() {
  6.       super(Config.class);
  7.    }
  9.    @Override
  10.    public GatewayFilter apply(Config config) {
  11.       return this::filter;
  12.    }
  14.    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
  15.       exchange.getAttributes().put("@ignoreTestGlobalFilter", true);
  16.       return chain.filter(exchange);
  17.    }
  19.    public static class Config {
  21.    }
  23.    @Override
  24.    public String name() {
  25.       return "IgnoreGlobalFilter";
  26.    }
  27. }

在全局GlobalFilter中判断忽略@ignoreTestGlobalFilter属性

  1. public final static String ATTRIBUTE_IGNORE_GLOBAL_FILTER = "@ignoreTestGlobalFilter";
  3. @Override
  4. public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
  5.    // 跳过检测
  6.    if (exchange.getAttribute(ATTRIBUTE_IGNORE_GLOBAL_FILTER) != null) {
  7.       return chain.filter(exchange);
  8.    }

配置启用IgnoreGlobalFilter

  1. spring:
  2.   cloud:
  3.     gateway:
  4.       routes:
  5.       - id: gloabl_filter
  6.         uri: http://localhost:4101
  7.         predicates:
  8.         - Path=/filter/**
  9.         filters:
  10.         - StripPrefix=1
  11.       - id: no_filter
  12.         uri: http://localhost:4101
  13.         predicates:
  14.         - Path=/no-filter/**
  15.         filters:
  16.         - StripPrefix=1
  17.         - IgnoreGlobalFilter  #在本路由启用跳过全局过滤器