springcloud和gateway,springboot整合gateway网关
springboot整合gateway网关
1、添加依赖
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
</dependencies>
<!-- 依赖声明 -->
<dependencyManagement>
<dependencies>
<!-- spring-cloud-alibaba的依赖配置-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring.cloud.alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- SpringBoot的依赖配置-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
三种路由网关的配置
1、直接path配置
spring: application: name: test-gateway-service cloud: gateway: routes: - id: after_route uri: http://localhost:8081/ predicates: - Path=/shop/**
2、动态配置-通过注册中心的服务名称，适合多个节点
spring: application: name: test-gateway-service cloud: gateway: discovery: locator: enabled: true lowerCaseServiceId: true routes: - id: after_route uri: lb://test-shop/ predicates: - Path=/shop/**
注意：需要把网关注册到服务中心上面
3、通过服务名称来实现跳转
spring: application: name: test-gateway-service cloud: gateway: discovery: locator: enabled: true lowerCaseServiceId: true
注意：需要把网关注册到服务中心上面
参考学习视频：https://www.bilibili.com/video/BV14h411f7Wa?p=13&spm_id_from=pageDriver
springboot整合gateway网关
概念说明：
微服务网关就是一个系统，通过暴露该微服务网关系统，方便我们进行相关的鉴权，安全控制，日志统一处理，易于监控的相关功能。
gateway网关跨域
@Bean public CorsWebFilter corsFilter() { CorsConfiguration config = new CorsConfiguration(); config.addAllowedMethod("*");//支持所有方法 config.addAllowedOrigin("*");//跨域处理 允许所有的域 config.addAllowedHeader("*");//支持所有请求头 UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser()); source.registerCorsConfiguration("/**", config);//匹配所有请求 return new CorsWebFilter(source); }
gateway网关过滤器
我们可以通过网关过滤器，实现一些逻辑的处理，比如ip黑白名单拦截、特定地址的拦截等。下面的代码中做了两个过滤器，并且设定的先后顺序。
@Component public class IpFilter implements GlobalFilter, Ordered { @Override public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) { ServerHttpRequest request = exchange.getRequest(); InetSocketAddress remoteAddress = request.getRemoteAddress(); //TODO 设置ip白名单 System.out.println("ip:"+remoteAddress.getHostName()); return chain.filter(exchange); } @Override public int getOrder() { return 1; } }
@Component public class UrlFilter implements GlobalFilter, Ordered { @Override public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) { ServerHttpRequest request = exchange.getRequest(); String url = request.getURI().getPath(); //TODO 拦截特定URL地址 System.out.println("url:"+url); return chain.filter(exchange); } @Override public int getOrder() { return 2; } }
springboot整合gateway报错
**********************************************************
Spring MVC found on classpath, which is incompatible with Spring Cloud Gateway at this time. Please remove spring-boot-starter-web dependency.
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-09-17 14:48:25.727 ERROR 15348 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'discoveryLocatorProperties' defined in class path resource [org/springframework/cloud/gateway/discovery/GatewayDiscoveryClientAutoConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.gateway.discovery.DiscoveryLocatorProperties]: Factory method 'discoveryLocatorProperties' threw exception; nested exception is java.lang.NoClassDefFoundError: javax/validation/ValidationException
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:657) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:485) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1341) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1181) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:897) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:879) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) ~[spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:755) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:402) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1247) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1236) [spring-boot-2.3.12.RELEASE.jar:2.3.12.RELEASE]
at com.liubh.AppApplication.main(AppApplication.java:10) [classes/:na]
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.gateway.discovery.DiscoveryLocatorProperties]: Factory method 'discoveryLocatorProperties' threw exception; nested exception is java.lang.NoClassDefFoundError: javax/validation/ValidationException
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:652) ~[spring-beans-5.2.15.RELEASE.jar:5.2.15.RELEASE]
... 20 common frames omitted
解决办法：移除spring-boot-starter-web依赖，添加spring-boot-starter-validation依赖
<!-- <dependency>--> <!-- <groupId>org.springframework.boot</groupId>--> <!-- <artifactId>spring-boot-starter-web</artifactId>--> <!-- </dependency>-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
