Spring Cloud Gateway替代zuul作为API网关的方法

<dependency>

     <groupId>org.springframework.cloud</groupId>

     <artifactId>spring-cloud-starter-netflix-zuul</artifactId>

</dependency>

<? xml version = "1.0" encoding = "UTF-8" ?>

< project xmlns = "http://maven.apache.org/POM/4.0.0"

          xmlns:xsi = "http://HdhCmsTestw3.org/2001/XMLSchema-instance"

          xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" >

     < modelVersion >4.0.0</ modelVersion >

     < groupId >com.yq</ groupId >

     < artifactId >GatewayDemo</ artifactId >

     < version >1.0-SNAPSHOT</ version >

     < parent >

         < groupId >org.springframework.boot</ groupId >

         < artifactId >spring-boot-starter-parent</ artifactId >

         < version >2.0.0.RELEASE</ version >

         < relativePath />

     </ parent >

     < properties >

         < project.build.sourceEncoding >UTF-8</ project.build.sourceEncoding >

         < project.reporting.outputEncoding >UTF-8</ project.reporting.outputEncoding >

         < java.version >1.8</ java.version >

     </ properties >

     < dependencyManagement >

         < dependencies >

             < dependency >

                 < groupId >org.springframework.cloud</ groupId >

                 < artifactId >spring-cloud-dependencies</ artifactId >

                 < version >Finchley.RELEASE</ version >

                 < type >pom</ type >

                 < scope >import</ scope >

             </ dependency >

         </ dependencies >

     </ dependencyManagement >

     < dependencies >

         < 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 >

         < dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-actuator</ artifactId >

         </ dependency >

         <!-- https://mvnrepository测试数据/artifact/org.springframework.cloud/spring-cloud-starter-netflix-hystrix -->

         < dependency >

             < groupId >org.springframework.cloud</ groupId >

             < artifactId >spring-cloud-starter-netflix-hystrix</ artifactId >

         </ dependency >

         < dependency >

             < groupId >org.projectlombok</ groupId >

             < artifactId >lombok</ artifactId >

             < optional >true</ optional >

         </ dependency >

         < dependency >

             < groupId >org.springframework.boot</ groupId >

             < artifactId >spring-boot-starter-test</ artifactId >

             < scope >test</ scope >

         </ dependency >

         <!-- fastjson-->

         < dependency >

             < groupId >com.alibaba</ groupId >

             < artifactId >fastjson</ artifactId >

             < version >1.1.33</ version >

         </ dependency >

         < dependency >

             < groupId >org.apache测试数据mons</ groupId >

             < artifactId >commons-lang3</ artifactId >

             < version >3.5</ version >

         </ dependency >

     </ dependencies >

     < repositories >

         < repository >

             < id >spring-milestones</ id >

             < name >Spring Milestones</ name >

             < url >https://repo.spring.io/milestone</ url >

             < snapshots >

                 < enabled >false</ enabled >

             </ snapshots >

         </ repository >

     </ repositories >

     < build >

         < plugins >

             < plugin >

                 < groupId >org.springframework.boot</ groupId >

                 < artifactId >spring-boot-maven-plugin</ artifactId >

             </ plugin >

         </ plugins >

     </ build >

</ project >

package com.yq;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.boot.SpringApplication;

import org.springframework.cloud.client.SpringCloudApplication;

import org.springframework.cloud.gateway.route.RouteLocator;

import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;

import org.springframework.context.annotation.Bean;

import org.springframework.web.reactive.function.BodyInserters;

import org.springframework.web.reactive.function.server.RequestPredicates;

import org.springframework.web.reactive.function.server.RouterFunction;

import org.springframework.web.reactive.function.server.RouterFunctions;

import org.springframework.web.reactive.function.server.ServerResponse;

@SpringCloudApplication

public class APIGatewayApplication  {

     private static final Logger logger = LoggerFactory.getLogger(APIGatewayApplication. class );

     @Bean

     public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {

         return builder.routes()

                 .route(r -> r.path( "/baidu" )

                         .uri( "http://baidu测试数据:80/" )

                 )

                .route( "websocket_route" , r -> r.path( "/apitopic1/**" )

                 .uri( "ws://127.0.0.1:6605" ))

                 .route(r -> r.path( "/userapi3/**" )

                         .filters(f -> f.addResponseHeader( "X-AnotherHeader" , "testapi3" ))

                         .uri( "lb://user-service/" )

                 )

                 .build();

     }

     public static void main(String[] args) {

         SpringApplication.run(APIGatewayApplication. class , args);

         logger.info( " Start APIGatewayApplication Done" );

     }

}

server:

   port: 6604

#服务名

spring:

   application:

     name: gateway-service

   cloud:

     gateway:

       filter:

         remove-non-proxy-headers:

           headers:

           - dummy

       routes:

         - id:  apiuser

         # 重点！/info必须使用http进行转发，lb代表从注册中心获取服务

           uri: lb://user-service

           predicates:

           # 重点！转发该路径！,/userapi/**,

           - Path=/userapi/**

           # http://localhost:6601/userapi/user/users/2, 必须加上StripPrefix=1，否则访问服务时会带上userapi

           #而不是我们期望的去掉userapi，只保留**部分

           filters:

           - StripPrefix=1

         - id:  api2user

           uri: lb://user-service

           predicates:

           - Path=/userapi2/**

           filters:

           - StripPrefix=1

eureka:

   client:

     serviceUrl:

       defaultZone: http://localhost:7700/eureka/