SpringCloud gateway网关

一、配置简单示例

server:
  port: 80
spring:
  application:
    name: api-gateway-server
  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
      # filters：配置局部过滤器的
      - id: gateway-provider
        # 静态路由
        # uri: http://localhost:8001/
        # 动态路由
        uri: lb://GATEWAY-PROVIDER
        predicates:
        - Path=/goods/**
        filters:
        - AddRequestParameter=username,zhangsan

      - id: gateway-consumer
        # uri: http://localhost:9000
        uri: lb://GATEWAY-CONSUMER
        predicates:
        - Path=/order/**
        # 微服务名称配置
      discovery:
        locator:
          enabled: true # 设置为true 请求路径前可以添加微服务名称
          lower-case-service-id: true # 允许为小写

eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka

 二、全局过滤器使用

@Component
public class MyFilter implements GlobalFilter, Ordered {
    @Override
    public Mono filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        System.out.println("自定义全局过滤器执行了~~~");
        return chain.filter(exchange);//放行
    }
    /**
     * 过滤器排序
     * @return 数值越小 越先执行
     */
    @Override
    public int getOrder() {
        return 0;
    }
}