springcloud和gateway,springboot整合gateway网关

springboot整合gateway网关

1、添加依赖

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   <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>
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三种路由网关的配置

1、直接path配置

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spring:
  application:
    name: test-gateway-service
  cloud:
    gateway:
      routes:
        - id: after_route
          uri: http://localhost:8081/
          predicates:
            - Path=/shop/**
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2、动态配置-通过注册中心的服务名称，适合多个节点

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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/**
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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

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spring:
  application:
    name: test-gateway-service
  cloud:
    gateway:
      discovery:
        locator:
          enabled: true
          lowerCaseServiceId: true

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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

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@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);
}
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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。

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@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;
    }
}
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@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;
    }
}
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 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

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<!--        <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>
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posted @   刘百会  阅读(1543)  评论(0)  编辑  收藏  举报
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