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YunaiV
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增加 Zuul 示例
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‎labx-21/labx-21-sc-zuul-demo02-registry/src/main/resources/application.yaml

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application:
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name: zuul-application
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cloud:
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nacos:
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# Nacos 作为注册中心的配置项
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discovery:
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server-addr: 127.0.0.1:8848 # Nacos 服务器地址
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# Zuul 配置项，对应 ZuulProperties 配置类
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zuul:
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servlet-path: / # ZuulServlet 匹配的路径，默认为 /zuul

‎labx-21/labx-21-sc-zuul-demo03-config-apollo/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>labx-21</artifactId>
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<groupId>cn.iocoder.springboot.labs</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>labx-21-sc-zuul-demo03-config-apollo</artifactId>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>6</source>
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<target>6</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<properties>
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<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
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<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
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<spring.cloud.alibaba.version>2.2.0.RELEASE</spring.cloud.alibaba.version>
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</properties>
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<!--
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引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
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在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
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-->
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>${spring.boot.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-dependencies</artifactId>
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<version>${spring.cloud.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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<dependency>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>spring-cloud-alibaba-dependencies</artifactId>
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<version>${spring.cloud.alibaba.version}</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<dependencies>
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<!-- 引入 Spring Cloud Zuul 相关依赖，使用它作为网关，并实现对其的自动配置 -->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
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</dependency>
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<!-- 引入 Spring Cloud Alibaba Nacos Discovery 相关依赖，将 Nacos 作为注册中心，并实现对其的自动配置 -->
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<dependency>
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<groupId>com.alibaba.cloud</groupId>
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<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
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</dependency>
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<!-- 引入 Apollo 客户端，内置对 Apollo 的自动化配置 -->
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<dependency>
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<groupId>com.ctrip.framework.apollo</groupId>
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<artifactId>apollo-client</artifactId>
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<version>1.5.1</version>
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</dependency>
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</dependencies>
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</project>

‎labx-21/labx-21-sc-zuul-demo03-config-apollo/src/main/java/cn/iocoder/springcloud/labx21/zuuldemo/ZuulApplication.java

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package cn.iocoder.springcloud.labx21.zuuldemo;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
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@SpringBootApplication
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@EnableZuulProxy // 开启 Zuul 网关
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public class ZuulApplication {
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public static void main(String[] args) {
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SpringApplication.run(ZuulApplication.class, args);
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}
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}

‎labx-21/labx-21-sc-zuul-demo03-config-apollo/src/main/java/cn/iocoder/springcloud/labx21/zuuldemo/ZuulPropertiesRefresher.java

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package cn.iocoder.springcloud.labx21.zuuldemo;
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import com.ctrip.framework.apollo.model.ConfigChangeEvent;
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import com.ctrip.framework.apollo.spring.annotation.ApolloConfigChangeListener;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.cloud.context.environment.EnvironmentChangeEvent;
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import org.springframework.cloud.netflix.zuul.RoutesRefreshedEvent;
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import org.springframework.cloud.netflix.zuul.filters.RouteLocator;
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import org.springframework.context.ApplicationContext;
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import org.springframework.stereotype.Component;
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/**
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* 由 https://github.com/ctripcorp/apollo-use-cases/blob/master/spring-cloud-zuul 提供代码，感谢~
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*/
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@Component
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public class ZuulPropertiesRefresher {
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private static final Logger logger = LoggerFactory.getLogger(ZuulPropertiesRefresher.class);
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@Autowired
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private ApplicationContext applicationContext;
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@Autowired
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private RouteLocator routeLocator;
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@ApolloConfigChangeListener(interestedKeyPrefixes = "zuul.")
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public void onChange(ConfigChangeEvent changeEvent) {
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refreshZuulProperties(changeEvent);
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}
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private void refreshZuulProperties(ConfigChangeEvent changeEvent) {
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logger.info("Refreshing zuul properties!");
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/*
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* rebind configuration beans, e.g. ZuulProperties
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* @see org.springframework.cloud.context.properties.ConfigurationPropertiesRebinder#onApplicationEvent
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*/
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this.applicationContext.publishEvent(new EnvironmentChangeEvent(changeEvent.changedKeys()));
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/*
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* refresh routes
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* @see org.springframework.cloud.netflix.zuul.ZuulServerAutoConfiguration.ZuulRefreshListener#onApplicationEvent
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*/
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this.applicationContext.publishEvent(new RoutesRefreshedEvent(routeLocator));
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logger.info("Zuul properties refreshed!");
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}
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}

‎labx-21/labx-21-sc-zuul-demo03-config-apollo/src/main/resources/application.yaml

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server:
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port: 8888
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spring:
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application:
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name: zuul-application
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cloud:
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nacos:
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# Nacos 作为注册中心的配置项
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discovery:
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server-addr: 127.0.0.1:8848 # Nacos 服务器地址
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# Apollo 相关配置项
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app:
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id: ${spring.application.name} # 使用的 Apollo 的项目（应用）编号
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apollo:
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meta: http://127.0.0.1:8080 # Apollo Meta Server 地址
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bootstrap:
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enabled: true # 是否开启 Apollo 配置预加载功能。默认为 false。
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eagerLoad:
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enable: true # 是否开启 Apollo 支持日志级别的加载时机。默认为 false。
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namespaces: application # 使用的 Apollo 的命名空间，默认为 application。

‎labx-21/pom.xml

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<modules>
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<module>labx-21-sc-zuul-demo01</module>
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<module>labx-21-sc-zuul-demo02-registry</module>
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<module>labx-21-sc-zuul-demo03-config-apollo</module>
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<module>labx-21-sc-user-service</module>
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</modules>
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