1.搭建网关模块

2.引入依赖：starter-gateway

<dependencies>
    <!--引入gateway 网关-->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
    </dependency>
</dependencies>

3.创建启动类

package com.itheima.gateway;

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

/**
 * @author mcm
 */
@SpringBootApplication
public class ApiGateway {
    public static void main(String[] args) {
        SpringApplication.run(ApiGateway.class, args);
    }
}

4.配置文件

server:
  port: 8888
spring:
  application:
    name: api-gateway
  cloud:
    gateway:
      routes:
          # 自定义规则名称
        - id: user-service
          uri: http://localhost:8001    #微服务地址
          predicates:
              # 匹配路径  ** 表示支持多级路径 例如 /user/aa/123  /user/aa/bb/123
              # 例如访问 http://localhost:8888/user/123  --> http://localhost:8001/user/123
            - Path=/user/**
        - id: service-consumer
          uri: http://localhost:9001    #微服务地址
          predicates:
            - Path=/consumer/**

5.Gateway-静态路由配置文件

server:
  port: 8888
spring:
  application:
    name: api-gateway
  cloud:
    # 网关配置
    gateway:
      # 路由配置：转发规则
      routes: #集合。
      # id: 唯一标识。默认是一个UUID
      # uri: 转发路径
      # predicates: 条件,用于请求网关路径的匹配规则
      - id: user-service
        uri: http://localhost:8001/
        predicates:
        - Path=/user/**