1. 序言

2. 搭建

2.1. gateway本体项目

2.1.1. pom

本项目的版本均基于SpringCloud Hoxton.SR9 和SpringCloudalibaba

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<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-dependencies</artifactId>
    <version>Hoxton.SR9</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>

<!--************spring-cloud相关************-->
<!--整合spring cloud alibaba-->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
    <version>2.2.6.RELEASE</version>
    <type>pom</type>
    <scope>import</scope>
</dependency>
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<dependencies>
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>

    <!--选用web或webflux-->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

2.1.2. 配置

启动类按照普通的springboot项目启动

配置文件

application.properties

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server:
  port: 8101

spring:
  application:
    name: CloudGateway
  cloud:
    nacos:
      discovery:
        server-addr: www.liukewen.cn:8848
        namespace: spring-cloud-alibaba-center-id
    # gateway的配置
    gateway:
      discovery:
        locator:
          enabled: false #关闭注册中心路由功能

      #这属于应用配置，可以在程序里配
      routes:
        - id: nacos-provider
          uri: lb://CloudGatewayProvider
          predicates:
            - Path=/cloud-provider/**

此时可以在nacos上看到注册信息

2.2. provider

简单搭建一个nacos项目

2.2.1. pom

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<dependencies>
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

2.2.2. 配置

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server:
  port: 8111
  servlet:
    # 这里加了/cloud-provider和上文路由配置的 spring.gateway.routes.predicates[0].Path=/cloud-provider/** 一致，方便路径保持一致
    context-path: /cloud-provider

spring:
  application:
    name: CloudGatewayProvider
  cloud:
    nacos:
      discovery:
        server-addr: www.liukewen.cn:8848
        namespace: spring-cloud-alibaba-center-id

2.2.3. 服务

提供一个调用服务

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@RestController
@RequestMapping("/providerController")
public class ProviderController {

    @GetMapping("/hello")
    public Object hello(){
        return "Provider Hello";
    }

}

同样可以加一个consumer

2.3. 使用

启动好服务后，可以在nacos中看到注册信息

nacos

用postman调用网关服务，返回provider的数据

postman