Spring Cloud Gateway-路由谓词工厂

蔚落 2024-03-17 20:11 70阅读 0赞

## 1、The After Route Predicate Factory ##

当请求的时间在设定的时间之后，请求才能访问到服务，请求在设定时间之前访问，则返回404

server:
      port: 10020
    spring:
      application:
        name: gateway-service
      cloud:
        gateway:
          routes:
            - id: after_route
              uri: lb://consumer-service
               #当请求的时间在设定时间之后，请求才会转发到微服务
               #请求在设定时间之前访问返回404
              predicates:
                - After=2023-07-14T17:50:42.579+08:00[Asia/Shanghai]

设定时间>现在时间 返回404 ![a2320b5764d240889734ff82191a0f3a.png][]

*  设置 设定时间>现在时间 返回404

> predicates:  
> \- After=2023-07-14T17:59:42.579+08:00\[Asia/Shanghai\]

![6cd2b85a449844df97a48454e278f7f0.png][]

##  ##

## 2、The Before Route Predicate Factory ##

请求时间没有超过设定的时间，请求才能访问服务，超过时间的请求，则返回404

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: before_route
              uri: lb://consumer-service
             
              predicates:
                - Before=2023-07-14T18:55:42.579+08:00[Asia/Shanghai]

![ceb1f68b7e144b33875b5d0315deafa4.png][]

*  修改设定时间< 现在时间

![456e4a47351d4997b975104724102aa1.png][]

## 3、The Bwtween Route Predicate Factory ##

请求时间在设定时间之间，请求可以访问服务，不在设定时间之间，直接返回查询不到服务

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: between_route
              uri: lb://consumer-service
              #设置时间区间
              predicates:
                - Between=2023-07-14T18:45:42.579+08:00[Asia/Shanghai],2023-07-14T18:59:42.579+08:00[Asia/Shanghai]

![227a3c0dd65a42c3ae83634b08065c88.png][]

*  修改时间区间，时间区间内不包含现在的时间

> \- Between=2023-07-14T18:45:42.579+08:00\[Asia/Shanghai\],2023-07-14T18:50:42.579+08:00\[Asia/Shanghai\]

![69eb6ce05d0747928352af97cafccccf.png][]

## 4、The Cookie Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: cookie_route
              uri: lb://consumer-service
              #设置访问请求的cookie名称和cookie值符合的正则表达式
              predicates:
                - Cookie=mycookie,[a-zA-Z]

*  使用postman访问，设置访问请求的Cookie

![05c75d77496e41be8fd5eface263a793.png][]

![3369a0b31e1b401890746e2caa59ce73.png][]

*  修改cookie的值

![3aa3a76db2b14b28a40adfe4e0146c89.png][]![541368f959ca45ea9519fcd7e98561db.png][]

*  修改cookie的名称

![0dc31d75d1cf4be9aeac09bd0b0f35cb.png][]

![698fececb4d34bb39b7365c112bb2409.png][]

## 5、The Header Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: Header_route
              uri: lb://consumer-service
              #设置请求头的名称和请求头的值符合的正则表达式
              #只有请求的名称和设置一致并且请求头的值满足正则表达式，请求才能发送给服务
              predicates:
                - Header=Request-Id,[a-zA-Z]

![4f7645c01bb74f98bdb4b7c96f119958.png][]

*  修改请求头中值

![0fbbf1419a7642609a5745e0fead3dda.png][]

*  修改请求头中的名称

![a5e64347e9ff4b359eed7832362c89cc.png][]

## 6、The Host Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: host_route
              uri: lb://consumer-service
              #只有请求头的名称为host，并且符合**.somehost，请求才能转发给服务
              predicates:
                - Host=**.somehost

![3956a9c068b14b2ca4d00f4e34040d3e.png][]

*  修改请求头中Host的值

![0772bbc3978d4ee1a5129989a6418151.png][]

*  修改请求头中的key名称

![1b72801e05f54c1e9b6c19712c9fcb5e.png][]

## 7、The Method Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: method_route
              uri: lb://consumer-service
              #设置能够访问的请求方法
              predicates:
                - Method=GET,POST

![11f24107f3054790a7dccf965f56cc51.png][]

![a59fa6c42e124fb9891998bd7e4c0d4e.png][]

![1965275802de4ee58eb47473ff5fb294.png][]

## 8、The Path Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: path_route
              uri: lb://consumer-service
              #设置允许访问的路径
              #只有请求路径中为/consumer/**,请求才能访问到服务
              predicates:
                - Path=/consumer/**

![92d33a4c072740398c78b072087691d0.png][]

![410d18d109a043ad8e8a2b7c26c6beb0.png][]

## 9、The Query Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: query_route
              uri: lb://consumer-service
              #设置允许访问的携带参数的名称
              #只有请求携带有data的参数，请求才能访问到服务
              predicates:
                - Query=data

![48267596a71e472d850c498a17866a06.png][]

*  修改携带参数的名称

![6ed5517cb73445b899cd53bbbe512a68.png][]

## 10、The RemoteAddr Route Predicate Factory ##

server:
      port: 10020
    
    spring:
      application:
        name: gateway-service
      cloud:
        nacos:
          discovery:
            server-addr: localhost:8848
        gateway:
          routes:
            - id: remoteAddr_route
              uri: lb://consumer-service
              #设置允许访问的ip地址
              #只有访问的ip地址在此网段内，请求才能访问服务
              predicates:
                - RemoteAddr=127.0.0.1/10

![69fca807759a4e1a9bb536d4643e7fce.png][]

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