spring cloud gateway 配置

nacos 安装准备工作参考 spring cloud 整合 nacos

1、pom 引入依赖

主要是 spring-cloud-starter-gateway

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.com.wenyl.alibaba</groupId>
    <artifactId>gateway</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Finchley.SR1</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>0.2.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.2</version>
            <optional>true</optional>
        </dependency>
    </dependencies>


    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>
​

2、配置文件

2.1、bootstrap.yml

spring:
  profiles:
    active: dev
  application:
    name: gateway
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
      config:
        server-addr: 127.0.0.1:8848
        group: DEFAULT_GROUP
        file-extension: yml
​

2.2、application.yml

server:
  port: 8080
management:
  endpoints:
    web:
      exposure:
        include: '*'
​

2.3、nacos 配置信息

spring:
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true
      routes:
        - id: nacos-provider
          uri: lb://nacos-provider
          predicates:
          - Path=/nacos-provider/**
          filters:
            - StripPrefix=1  
        - id: service-consumer
          uri: lb://service-consumer
          predicates:
          - Path=/service-consumer/**
          filters:
            - StripPrefix=1
​

2.4、配置规则

Spring Cloud Gateway 通过路由谓词工厂来进行路径规则配置

2.4.1、After 配置

after 配置只有一个时间参数，用于匹配指定时间之后的请求

spring:
  cloud:
    gateway:
      routes:
      - id: after_route
        uri: https://example.org
        predicates:
        - After=2017-01-20T17:42:47.789-07:00[America/Denver]
​

2.4.2、Before 配置

after 配置只有一个时间参数，用于匹配指定时间之前的请求

spring:
  cloud:
    gateway:
      routes:
      - id: before_route
        uri: https://example.org
        predicates:
        - Before=2017-01-20T17:42:47.789-07:00[America/Denver]
​

2.4.3、Between 配置

after 配置有两个时间参数，用于匹配指定时间范围之间的请求

spring:
  cloud:
    gateway:
      routes:
      - id: between_route
        uri: https://example.org
        predicates:
        - Between=2017-01-20T17:42:47.789-07:00[America/Denver], 2017-01-21T17:42:47.789-07:00[America/Denver]
​

2.4.4、Cookie 配置

有两个参数，第一个为 Cookie 的 name，第二个为匹配对应值的正则表达式，匹配符合条件的请求

spring:
  cloud:
    gateway:
      routes:
      - id: cookie_route
        uri: https://example.org
        predicates:
        - Cookie=chocolate, ch.p
​

2.4.5、Header 配置

有两个参数，第一个为 Header 的 name，第二个为匹配对应值的正则表达式，匹配符合条件的请求

spring:
  cloud:
    gateway:
      routes:
      - id: header_route
        uri: https://example.org
        predicates:
        - Header=X-Request-Id, \d+
​

2.4.6、Host 配置

处理指定域名服务的请求

spring:
  cloud:
    gateway:
      routes:
      - id: host_route
        uri: https://example.org
        predicates:
        - Host=**.somehost.org,**.anotherhost.org
​

2.4.7、Method 配置

通过 HTTP 方法来匹配

spring:
  cloud:
    gateway:
      routes:
      - id: method_route
        uri: https://example.org
        predicates:
        - Method=GET,POST
​

2.4.8、Path 配置

通过请求路径匹配

spring:
  cloud:
    gateway:
      routes:
      - id: path_route
        uri: https://example.org
        predicates:
        - Path=/red/{segment},/blue/{segment}
​

2.4.9、Query 配置

query 用于包含指定参数值的请求，有两个参数，第一个是参数 name，第二个是用于匹配值得正则表达式

spring:
  cloud:
    gateway:
      routes:
      - id: query_route
        uri: https://example.org
        predicates:
        - Query=red, gree.
​

2.4.10、RemoteAddr 配置

根据请求发起的 IP 进行拦截处理

spring:
  cloud:
    gateway:
      routes:
      - id: remoteaddr_route
        uri: https://example.org
        predicates:
        - RemoteAddr=192.168.1.1/24
​

2.4.11、Weight 配置

根据权重进行配置，一共两个参数，第一个是组名，第二个是在改组中的占比（相加为 10）

spring:
  cloud:
    gateway:
      routes:
      - id: weight_high
        uri: https://weighthigh.org
        predicates:
        - Weight=group1, 8
      - id: weight_low
        uri: https://weightlow.org
        predicates:
        - Weight=group1, 2
​

表示一个占比 80%，一个占比 20%