微服务网关搭建

依赖

       <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-gateway</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>

启动类

@SpringBootApplication
@EnableEurekaClient
public class GatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(GatewayApplication.class, args);
    }
}

application.yml 文件

spring:
  application:
    name: sysgateway
  cloud:
    gateway:
      routes:
      - id: goods
        uri: lb://goods
        predicates:
        - Path=/goods/**
        filters:
        - StripPrefix= 1
      - id: system
        uri: lb://system
        predicates:
        - Path=/system/**
        filters:
        - StripPrefix= 1
server:
  port: 9101
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:6868/eureka
  instance:
    prefer-ip-address: true

微服务网关跨域

      globalcors:
        cors-configurations:
          '[/**]': # 匹配所有请求
            allowedOrigins: "*" #跨域处理 允许所有的域
            allowedMethods: # 支持的方法
            - GET
            - POST
            - PUT
            - DELETE

微服务网关过滤器

@Component
public class IpFilter implements GlobalFilter, Ordered {
​
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
​
        System.out.println("经过第1个过滤器IpFilter");
        ServerHttpRequest request = exchange.getRequest();
        InetSocketAddress remoteAddress = request.getRemoteAddress();
        System.out.println("ip:"+remoteAddress.getHostName());
        return chain.filter(exchange);
    }
​
    @Override
    public int getOrder() {
        return 1;
    }
}