SpringCloud创建Gateway模块

2026-06-01 4 花语

本文内容纲要：

-1.说明 -2.创建gateway模块 -3.添加依赖 -4.新增配置文件 -5.新增主启动类 -6.启动gateway -7.测试效果

1.说明

本文详细介绍SpringCloud创建Gateway模块的方法，

基于已经创建好的SpringCloud父工程，

请参考SpringCloud创建项目父工程,

和已经创建好的Eureka子工程，

请参考SpringCloud创建Eureka模块,

创建Gateway模块这个子工程，

作为SpringCloud的网关路由。

2.创建gateway模块

这一步创建一个MavenModule，

作为SpringCloud的父工程下的一个子工程：

在父工程spring-cloud-demo上右键->New->Other...->Maven->MavenProject

勾选Createasimpleproject(skiparchetypeselection),

输入ModuleName:gateway,

查看ParentProject:spring-cloud-demo，

如果不是自己选择的父工程，请重新选择。

点击Finish完成工程创建。

3.添加依赖

在pom.xml中增加eureka-client的依赖,

以及spring-cloud-starter-gateway的依赖： <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> </dependencies>

4.新增配置文件

在src/main/resource目录下新增application.yml文件，

并且增加如下配置： server: port:6001 spring: application: name:gateway cloud: gateway: routes: #路由的ID，没有固定规则但要求唯一，建议配合服务名 -id:payment_routh #匹配后提供服务的路由地址 uri:http://news.baidu.com predicates: #断言,路径相匹配的进行路由 -Path=/guonei/** eureka: instance: #eureka客户端的实例名字（主机名） hostname:gateway-service client: service-url: #表示向注册中心注册自己 register-with-eureka:true #表示需要去注册中心检索服务 fetch-registry:true #与eurekaserver交互的地址，包括查询服务和注册服务 defaultZone:http://localhost:7001/eureka

主要是用于连接Eureka服务中心，

以及配置的Gateway的路由配置。

5.新增主启动类

在src/main/java目录下新增主启动类，

Package:com.yuwen.spring.gateway

Name:GatewayApplication

然后修改GatewayApplication.java如下,

注意一定要有EnableEurekaClient注解，

表示这是一个Eureka的客户端： packagecom.yuwen.spring.gateway; importorg.springframework.boot.SpringApplication; importorg.springframework.boot.autoconfigure.SpringBootApplication; importorg.springframework.cloud.netflix.eureka.EnableEurekaClient; @SpringBootApplication @EnableEurekaClient publicclassGatewayApplication{ publicstaticvoidmain(String[]args){ SpringApplication.run(GatewayApplication.class,args); } }

6.启动gateway

右键主启动类GatewayApplication.java，

RunAs...->JavaApplication

主要提前启动EurekaServer服务，

成功启动日志如下，

可以看到对外提供的服务端口是6001： ._________ /\\/________(_)______\\\\ (()\___|_|_||_\/_`|\\\\ \\/___)||_)|||||||(_||)))) |____|.__|_||_|_||_\__,|//// =========|_|==============|___/=/_/_/_/ ::SpringBoot::(v2.3.1.RELEASE) 2020-07-1012:24:23.363INFO18968---[main]c.y.spring.gateway.GatewayApplication:Noactiveprofileset,fallingbacktodefaultprofiles:default 2020-07-1012:24:23.780INFO18968---[main]o.s.cloud.context.scope.GenericScope:BeanFactoryid=db5a2a8d-f793-34a6-b94a-45993e42245a 2020-07-1012:24:23.833INFO18968---[main]trationDelegate$BeanPostProcessorChecker:Beanorg.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfigurationoftype[org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration]isnoteligibleforgettingprocessedbyallBeanPostProcessors(forexample:noteligibleforauto-proxying) 2020-07-1012:24:23.834INFO18968---[main]trationDelegate$BeanPostProcessorChecker:Beanorg.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactiveLoadBalancerConfigoftype[org.springframework.cloud.client.loadbalancer.reactive.LoadBalancerBeanPostProcessorAutoConfiguration$ReactiveLoadBalancerConfig]isnoteligibleforgettingprocessedbyallBeanPostProcessors(forexample:noteligibleforauto-proxying) 2020-07-1012:24:23.835INFO18968---[main]trationDelegate$BeanPostProcessorChecker:BeandeferringLoadBalancerExchangeFilterFunctionoftype[org.springframework.cloud.client.loadbalancer.reactive.DeferringLoadBalancerExchangeFilterFunction]isnoteligibleforgettingprocessedbyallBeanPostProcessors(forexample:noteligibleforauto-proxying) 2020-07-1012:24:23.905WARN18968---[main]c.n.c.sources.URLConfigurationSource:NoURLswillbepolledasdynamicconfigurationsources. 2020-07-1012:24:23.905INFO18968---[main]c.n.c.sources.URLConfigurationSource:ToenableURLsasdynamicconfigurationsources,defineSystempropertyarchaius.configurationSource.additionalUrlsormakeconfig.propertiesavailableonclasspath. 2020-07-1012:24:23.908WARN18968---[main]c.n.c.sources.URLConfigurationSource:NoURLswillbepolledasdynamicconfigurationsources. 2020-07-1012:24:23.908INFO18968---[main]c.n.c.sources.URLConfigurationSource:ToenableURLsasdynamicconfigurationsources,defineSystempropertyarchaius.configurationSource.additionalUrlsormakeconfig.propertiesavailableonclasspath. 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[After] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Before] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Between] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Cookie] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Header] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Host] 2020-07-1012:24:26.134INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Method] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Path] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Query] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[ReadBodyPredicateFactory] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[RemoteAddr] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[Weight] 2020-07-1012:24:26.135INFO18968---[main]o.s.c.g.r.RouteDefinitionRouteLocator:LoadedRoutePredicateFactory[CloudFoundryRouteService] 2020-07-1012:24:27.507WARN18968---[main]ockingLoadBalancerClientRibbonWarnLogger:YoualreadyhaveRibbonLoadBalancerClientonyourclasspath.Itwillbeusedbydefault.AsSpringCloudRibbonisinmaintenancemode.WerecommendswitchingtoBlockingLoadBalancerClientinstead.Inordertouseit,setthevalueof`spring.cloud.loadbalancer.ribbon.enabled`to`false`orremovespring-cloud-starter-netflix-ribbonfromyourproject. 2020-07-1012:24:27.513WARN18968---[main]eactorLoadBalancerClientRibbonWarnLogger:YouhaveRibbonLoadBalancerClientonyourclasspath.LoadBalancerExchangeFilterFunctionthatusesitunderthehoodwillbeusedbydefault.SpringCloudRibbonisnowinmaintenancemode,sowesuggestswitchingtoReactorLoadBalancerExchangeFilterFunctioninstead.Inordertouseit,setthevalueof`spring.cloud.loadbalancer.ribbon.enabled`to`false`orremovespring-cloud-starter-netflix-ribbonfromyourproject. 2020-07-1012:24:27.564INFO18968---[main]o.s.c.n.eureka.InstanceInfoFactory:Settinginitialinstancestatusas:STARTING 2020-07-1012:24:27.657INFO18968---[main]com.netflix.discovery.DiscoveryClient:InitializingEurekainregionus-east-1 2020-07-1012:24:28.214INFO18968---[main]c.n.d.provider.DiscoveryJerseyProvider:UsingJSONencodingcodecLegacyJacksonJson 2020-07-1012:24:28.214INFO18968---[main]c.n.d.provider.DiscoveryJerseyProvider:UsingJSONdecodingcodecLegacyJacksonJson 2020-07-1012:24:28.286INFO18968---[main]c.n.d.provider.DiscoveryJerseyProvider:UsingXMLencodingcodecXStreamXml 2020-07-1012:24:28.286INFO18968---[main]c.n.d.provider.DiscoveryJerseyProvider:UsingXMLdecodingcodecXStreamXml 2020-07-1012:24:28.392INFO18968---[main]c.n.d.s.r.aws.ConfigClusterResolver:Resolvingeurekaendpointsviaconfiguration 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Disabledeltaproperty:false 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Singlevipregistryrefreshproperty:null 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Forcefullregistryfetch:false 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Applicationisnull:false 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:RegisteredApplicationssizeiszero:true 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Applicationversionis-1:true 2020-07-1012:24:28.815INFO18968---[main]com.netflix.discovery.DiscoveryClient:Gettingallinstanceregistryinfofromtheeurekaserver 2020-07-1012:24:28.943INFO18968---[main]com.netflix.discovery.DiscoveryClient:Theresponsestatusis200 2020-07-1012:24:28.944INFO18968---[main]com.netflix.discovery.DiscoveryClient:Startingheartbeatexecutor:renewintervalis:30 2020-07-1012:24:28.945INFO18968---[main]c.n.discovery.InstanceInfoReplicator:InstanceInfoReplicatoronDemandupdateallowedrateperminis4 2020-07-1012:24:28.948INFO18968---[main]com.netflix.discovery.DiscoveryClient:DiscoveryClientinitializedattimestamp1594355068947withinitialinstancescount:0 2020-07-1012:24:28.948INFO18968---[main]o.s.c.n.e.s.EurekaServiceRegistry:RegisteringapplicationGATEWAYwitheurekawithstatusUP 2020-07-1012:24:28.949INFO18968---[main]com.netflix.discovery.DiscoveryClient:SawlocalstatuschangeeventStatusChangeEvent[timestamp=1594355068949,current=UP,previous=STARTING] 2020-07-1012:24:28.950INFO18968---[nfoReplicator-0]com.netflix.discovery.DiscoveryClient:DiscoveryClient_GATEWAY/yuwen-asiainfo:gateway:6001:registeringservice... 2020-07-1012:24:29.004INFO18968---[nfoReplicator-0]com.netflix.discovery.DiscoveryClient:DiscoveryClient_GATEWAY/yuwen-asiainfo:gateway:6001-registrationstatus:204 2020-07-1012:24:29.505INFO18968---[main]o.s.b.web.embedded.netty.NettyWebServer:Nettystartedonport(s):6001 2020-07-1012:24:29.506INFO18968---[main].s.c.n.e.s.EurekaAutoServiceRegistration:Updatingportto6001 2020-07-1012:24:30.752INFO18968---[main]c.y.spring.gateway.GatewayApplication:StartedGatewayApplicationin9.197seconds(JVMrunningfor10.148) 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Disabledeltaproperty:false 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Singlevipregistryrefreshproperty:null 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Forcefullregistryfetch:false 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Applicationisnull:false 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:RegisteredApplicationssizeiszero:true 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Applicationversionis-1:false 2020-07-1012:24:58.947INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Gettingallinstanceregistryinfofromtheeurekaserver 2020-07-1012:24:58.972INFO18968---[freshExecutor-0]com.netflix.discovery.DiscoveryClient:Theresponsestatusis200

7.测试效果

查看上面gateway的路由配置，

会把http://localhost:6001/guonei

的访问自动转到http://news.baidu.com/guonei，

即通过gateway请求到百度新闻国内页面。

浏览器访问效果如下：

如果访问http://localhost:6001/guoji，

由于没有配置相应的路由规则，

则会出现下面的错误页面：

本文内容总结：1.说明，2.创建gateway模块，3.添加依赖，4.新增配置文件，5.新增主启动类，6.启动gateway，7.测试效果，

原文链接：https://www.cnblogs.com/bugzeroman/p/13737759.html