springboot整合gateway的详细过程

<dependency>
    <groupId>org.springframework.cloud</groupId>
    <artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>

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

​
spring:
  cloud:
    gateway:
      routes:
        - id: service1_route
          uri: http://localhost:8081
          predicates:
            - Path=/service1/**
        - id: service2_route
          uri: http://localhost:8082
          predicates:
            - Path=/service2/**
​

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

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient // 如果需要使用Eureka，启用此注解
public class GatewayApplication {
    public static void main(String[] args) {
        SpringApplication.run(GatewayApplication.class, args);
    }
}

import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.stereotype.Component;
import reactor.core.publisher.Mono;
@Component
public class CustomFilter extends AbstractGatewayFilterFactory<CustomFilter.Config> {
    public CustomFilter() {
        super(Config.class);
    }
    @Override
    public GatewayFilter apply(Config config) {
        return (exchange, chain) -> {
            // 在请求前执行的操作
            System.out.println("Pre-filter logic");
            return chain.filter(exchange).then(Mono.fromRunnable(() -> {
                // 在请求后执行的操作
                System.out.println("Post-filter logic");
            }));
        };
    }
    public static class Config {
        // 配置参数
    }
}