SpringCloud (three)-Gateway (gateway service)

The role of SpringCloudGateway:

1. The request is first intercepted by the gateway module of the application. After the gateway module authenticates the request and restricts the current, it forwards the specific request to the corresponding module of the current application for processing. In short: the gateway is responsible for the request Route to the specific back-end service.

           

1. Create a new Springboot project, add the following content to the pom

        <!--用于gateway,下载spring WebFlux时总是下载不好，采用去网站下载并导入maven仓库的方式，然后重新导入依赖语句即可-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>
        <!--用于被consul发现-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-discovery</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>
        <!--把consul作为配置中心-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-consul-config</artifactId>
            <version>2.2.3.RELEASE</version>
        </dependency>
        <!--actuator是监控系统健康情况的工具-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

2. Modify the bootstrap file

server:
  port: 8090

spring:
  application:
    name: gateway
  cloud:
    consul:
      host: localhost
      port: 8500
      discovery:
        service-name: ${spring.application.name}
      config:
        enabled: true
        format: yaml
        default-context: ${spring.application.name}
        prefix: config
        data-key: data

3. Add configuration information in consul

spring:
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true
          lower-case-service-id: true
      routes:
        - id: gateway-service #路由唯一id
          uri: https://www.baidu.com
          predicates:
            - Path=/tobaidu/**
        - id: gateway-service2
          uri: https://www.csdn.net
          predicates:
            - Path=/tocsdn/**
test:
  name: 1234

4. Start the service (if the terminal prompts you to remove the spring-boot-starter-web dependency, just comment out the corresponding dependency in the pom)

Then visit localhost:8090/tobaidu to jump to the Baidu page

Also visit localhost:8090/tocsdn to jump to the csdn page