路由谓词工厂 Route Predicate Factory

1. The After Route Predicate Factory        

spring:cloud:gateway:routes:- id: after_routeuri: https://example.orgpredicates:- After=2017-01-20T17:42:47.789-07:00[America/Denver]# 用日期时间匹配

2. The Before Route Predicate Factory

spring:cloud:gateway:routes:- id: before_routeuri: https://example.orgpredicates:- Before=2017-01-20T17:42:47.789-07:00[America/Denver]# 用日期时间匹配

3. The Between Route Predicate Factory

spring:cloud:gateway:routes:- id: between_routeuri: https://example.orgpredicates:- Between=2017-01-20T17:42:47.789-07:00[America/Denver], 2017-01-21T17:42:47.789-07:00[America/Denver]# 用日期时间匹配

4. The Cookie Route Predicate Factory        

spring:cloud:gateway:routes:- id: cookie_routeuri: https://example.orgpredicates:- Cookie=chocolate, ch.p# 用 cookie 名称和值匹配

5. The Header Route Predicate Factory       

spring:cloud:gateway:routes:- id: header_routeuri: https://example.orgpredicates:- Header=X-Request-Id, \d+# 用 header 名称和值匹配

6. The Host Route Predicate Factory      

spring:cloud:gateway:routes:- id: host_routeuri: https://example.orgpredicates:- Host=**.somehost.org,**.anotherhost.org# 用 Host header 的值匹配

7. The Method Route Predicate Factory        

spring:cloud:gateway:routes:- id: method_routeuri: https://example.orgpredicates:- Method=GET,POST# 用请求方法的类型匹配

8. The Path Route Predicate Factory        

spring:cloud:gateway:routes:- id: path_routeuri: https://example.orgpredicates:- Path=/red/{segment},/blue/{segment}# 用请求路径的值匹配

9. The Query Route Predicate Factory        

spring:cloud:gateway:routes:- id: query_routeuri: https://example.orgpredicates:- Query=green# 用查询参数的名称和值（值可以省略）匹配

10. The RemoteAddr Route Predicate Factory        

spring:cloud:gateway:routes:- id: remoteaddr_routeuri: https://example.orgpredicates:- RemoteAddr=192.168.1.1/24# 用 RemoteAddr（CIDR格式，如：192.168.1.1/24） header 的值匹配

11. The Weight Route Predicate Factory        

spring:cloud:gateway:routes:- id: weight_highuri: https://weighthigh.orgpredicates:- Weight=group1, 8- id: weight_lowuri: https://weightlow.orgpredicates:- Weight=group1, 2# 用分组名称和权重匹配

12. The XForwarded Remote Addr Route Predicate Factory        

spring:cloud:gateway:routes:- id: xforwarded_remoteaddr_routeuri: https://example.orgpredicates:- XForwardedRemoteAddr=192.168.1.1/24# 用 X-Forwarded-For（CIDR格式，如：192.168.1.1/24） header 值匹配

13. 自定义路由谓词工厂：继承自 AbstractRoutePredicateFactory

https://blog.csdn.net/abu935009066/article/details/112260405

网关过滤器工厂 GatewayFilter Factories

包括这些过滤器：

添加请求头、添加请求参数、添加响应头、断路器、缓存请求体、去重响应头、回退头、JSON转gRPC、本地响应缓存、映射请求头、修改请求体、修改响应体、前缀路径、保留主机头、重定向、移除JSON属性响应体、移除请求头、移除请求参数、移除响应头、请求头大小、请求速率限制器、重写位置响应头、重写路径、重写响应头、保存会话、安全头、设置路径、设置请求头、设置响应头、设置状态、去除前缀、重试、请求大小、设置请求主机头、令牌中继等过滤器和默认过滤器。

https://docs.spring.io/spring-cloud-gateway/docs/current/reference/html/#gatewayfilter-factories

路由谓词和过滤器在 yml 中的两种配置方式

Shortcut annotation，简洁型写法：

spring:cloud:gateway:routes:- id: cookie_routeuri: https://example.orgpredicates:- Cookie=chocolate, ch.p    

Fully expanded arguments，复杂型写法（这种方式需要详细写出每一项）：

spring:cloud:gateway:routes:- id: cookie_routeuri: https://example.orgpredicates:- name: Cookieargs: name: chocolateregexp: ch.p