SpringCloud Gateway 快速入门

文章目录

一、网关模块搭建

1. 引入依赖
2. 配置
3. 启动类

二、产品服务模块搭建

2.1. 引入依赖
2.2. 配置
2.3. 控制层
2.4. 启动类
2.5. 启动产品模块

三、启动中间件

3.1. nacos启动
3.2. 启动gateway
3.3. 配置域名映射

四、测试验证

4.1. 测试产品服务
4.2. 网关访问产品

一、网关模块搭建

1. 引入依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    
    <properties>
        <spring.cloud-version>Hoxton.SR9</spring.cloud-version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <!--https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E-->
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud-version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

2. 配置

访问product.gblfy.com**就会路由到http://localhost:9000 这里的9000端口我们的产品服务模块

server:
  port: 8081
spring:
  cloud:
    gateway:
      routes:
        - id: product
          uri: http://localhost:9000
          predicates:
            - Host=product.gblfy.com**

3. 启动类

package com.gblfy.gatewayserv;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class GatewayServApplication {

    public static void main(String[] args) {
        SpringApplication.run(GatewayServApplication.class, args);
    }

}

二、产品服务模块搭建

2.1. 引入依赖

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--服务注册发现-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <!--spring-cloud-alibaba 版本控制-->
            <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>
        </dependencies>
    </dependencyManagement>

2.2. 配置

server:
  port: 9000
management:
  endpoints:
    web:
      exposure:
        include: '*'

2.3. 控制层

package com.gblfy.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class ProductController {

    //http://localhost:9000/product/" + productId
    @GetMapping("/product/{productId}")
    public String getProductName(@PathVariable Integer productId) {
        return "IPhone 12";
    }
}

2.4. 启动类

package com.gblfy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ProductAplication {

    public static void main(String[] args) {
        SpringApplication.run(ProductAplication.class);
    }
}