springcloud gateway(一)

淡淡的烟草味﹌ 2022-04-24 03:24 199阅读 0赞

pom.xml

<dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Finchley.SR2</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-gateway</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka-server</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>

导入gateway的jar，以及eureka的jar

application.yml

spring:
      cloud:
        gateway:
          routes:
            - id: web
              uri: lb://EURAKA-SERVER
              predicates:
                - Path=/hello/{segment}
    
    
      application:
        name: springcloud-gateway
        cloud:
          gateway:
            discovery:
              locator:
                enabled: true
    #系统端口
    server:
      port: 1200
    
    #Eureka配置
    eureka:
      client:
        service-url:
          defaultZone: http://localhost:10001/eureka/

其中这一段比较重要

spring:  
  cloud:  
    gateway:  
      routes:  
        - id: web  
          uri: lb://EURAKA-SERVER  
          predicates:  
            - Path=/hello/\{segment\}

lb代表后面写入的是服务名，如果uri你写入http://localhost:1200，那么它转发的是到特定的端口号，而不会说转发到特定的服务名，这里注意一下。

其次上面这段什么意思呢？

当匹配到http://localhost:1200/hello/xx的时候会跳转到服务名为euraka-server的服务去。

### 限流 ###

[http://www.ityouknow.com/springcloud/2019/01/26/spring-cloud-gateway-limit.html][http_www.ityouknow.com_springcloud_2019_01_26_spring-cloud-gateway-limit.html]

熔断器使用hystrix，这个比较简单

比较重要的是它的过滤参数，比如header，cookie验证等等

[http://www.ityouknow.com/springcloud/2019/01/19/spring-cloud-gateway-service.html][http_www.ityouknow.com_springcloud_2019_01_19_spring-cloud-gateway-service.html]

[http_www.ityouknow.com_springcloud_2019_01_26_spring-cloud-gateway-limit.html]: http://www.ityouknow.com/springcloud/2019/01/26/spring-cloud-gateway-limit.html
[http_www.ityouknow.com_springcloud_2019_01_19_spring-cloud-gateway-service.html]: http://www.ityouknow.com/springcloud/2019/01/19/spring-cloud-gateway-service.html