springboot中nacos动态路由如何配置

这篇文章主要介绍springboot中nacos动态路由如何配置，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

nacos动态路由的配置

首先。。。

我自己有个服务器。在无聊之时写的代码，主要是通过网关来调用接口所以有了下面的代码。

1.作为一个动态路由维护管理的类

@Service public class DynamicRouteServiceImpl  implements ApplicationEventPublisherAware {     /**      *      */     @Autowired     private RouteDefinitionWriter routeDefinitionWriter;     private ApplicationEventPublisher publisher;     /**      * 增加路由      * @param definition      * @return      */     public String add(RouteDefinition definition) {         routeDefinitionWriter.save(Mono.just(definition)).subscribe();         this.publisher.publishEvent(new RefreshRoutesEvent(this));         return "success";     }     /**      * 更新路由      * @param definition      * @return      */     public String update(RouteDefinition definition) {         try {             this.routeDefinitionWriter.delete(Mono.just(definition.getId()));         } catch (Exception e) {             return "update fail,not find route  routeId: "+definition.getId();         }         try {             routeDefinitionWriter.save(Mono.just(definition)).subscribe();             this.publisher.publishEvent(new RefreshRoutesEvent(this));             return "success";         } catch (Exception e) {             return "update route  fail";         }     }     /**      * 删除路由      * @param id      * @return      */     public String delete(String id) {         try {             this.routeDefinitionWriter.delete(Mono.just(id));             return "delete success";         } catch (Exception e) {             e.printStackTrace();             return "delete fail";         }     }     @Override     public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {         this.publisher = applicationEventPublisher;     }

2.基于Nacos动态配置路由服务

@Component public class DynamicRouteServiceImplByNacos implements CommandLineRunner {     private static final Logger logger = LoggerFactory.getLogger(DynamicRouteServiceImplByNacos.class);     @Autowired     private DynamicRouteServiceImpl dynamicRouteService;     @Value("${spring.cloud.nacos.discovery.server-addr}")     private String address;     @Value("${config.dataId}")     private String dataId;     @Value("${config.groupId}")     private String groupId;     @Value("${config.timeout}")     private Long timeout;    /* @Value("${config.ignore}")     private String ignore;*/     /**      * 监听Nacos Server下发的动态路由配置      */     public void dynamicRouteByNacosListener() {         try {             ConfigService configService = NacosFactory.createConfigService(address);             configService.addListener(dataId, groupId, new Listener() {                 @Override                 public void receiveConfigInfo(String configInfo) {                     try {                         logger.info("================Nacos 配置中心路由配置信息已修改================\n" + configInfo + "\n\n");                         List<RouteDefinition> list = JSON.parseArray(configInfo, RouteDefinition.class);                         list.forEach(definition -> {                             dynamicRouteService.update(definition);                         });                     } catch (Exception e) {                         e.printStackTrace();                     }                 }                 @Override                 public Executor getExecutor() {                     return null;                 }             });             /*configService.addListener(ignore, groupId, new Listener() {                 @Override                 public void receiveConfigInfo(String configInfo) {                     try {                         logger.info("================Nacos 配置中心忽略URL配置已修改================\n" + configInfo + "\n\n");                         logger.info("\n" + configInfo + "\n\n");                         List<String> ignoreList = JSON.parseArray(configInfo, String.class);                         IgnoreRouteConfig.setIgnoreRouteArr(ignoreList);                     } catch (Exception e) {                         e.printStackTrace();                     }                 }                 @Override                 public Executor getExecutor() {                     return null;                 }             });*/         } catch (Exception e) {             e.printStackTrace();         }     }     @Override     public void run(String... args) throws Exception {         dynamicRouteByNacosListener();     } }

3.yml配置

4. nacos网关配置

5.最后:我建的是

父子工程两个服务发到服务器后 注意注意注意!!!：一定要开启防火墙，登上阿里云自己的服务增加端口,然后再linux中也要增加端口 linux防火墙相关命令

• 删除 firewall-cmd --zone= public --remove-port=80/tcp --permanent

• 开放 firewall-cmd --zone=public --add-port=1935/tcp --permanent

• 查看状态 systemctl status firewalld

• 启动 systemctl start firewalld

• 查看已开启端口 firewall-cmd --list-ports

• 重启 firewall-cmd --reload

yml配置文件中 有一个这个端口 这个也要在阿里云上面还有服务器开启

这个就是接口访问时的网关端口号

Springboot配置Nacos出现的问题

报错信息

java.lang.ClassNotFoundException:org.springframework.boot.context.properties.ConfigurationBeanFactoryMetadata

由于当前Nacos版本还不支持Springboot 2.4.+ 的版本，所以需要降一个版本 为2.3.+

具体如下

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'configurationPropertiesBeans' defined in class path resource [org/springframework/cloud/autoconfigure/ConfigurationPropertiesRebinderAutoConfiguration.class]: Post-processing of merged bean definition failed; nested exception is java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.context.properties.ConfigurationPropertiesBeans] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@1f89ab83]	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:579) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.context.support.PostProcessorRegistrationDelegate.registerBeanPostProcessors(PostProcessorRegistrationDelegate.java:270) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.context.support.AbstractApplicationContext.registerBeanPostProcessors(AbstractApplicationContext.java:762) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:567) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:782) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:774) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:439) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.run(SpringApplication.java:339) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:144) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:212) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:117) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]	at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:74) ~[spring-cloud-context-2.2.5.RELEASE.jar:2.2.5.RELEASE]	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:176) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:169) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:143) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:131) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:82) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplicationRunListeners.lambda$environmentPrepared$2(SpringApplicationRunListeners.java:63) ~[spring-boot-2.4.5.jar:2.4.5]	at java.base/java.util.ArrayList.forEach(ArrayList.java:1540) ~[na:na]	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:117) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplicationRunListeners.doWithListeners(SpringApplicationRunListeners.java:111) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:62) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:375) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.run(SpringApplication.java:333) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1340) ~[spring-boot-2.4.5.jar:2.4.5]	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1329) ~[spring-boot-2.4.5.jar:2.4.5]	at com.lenyuqin.product.ProductApplication.main(ProductApplication.java:14) ~[classes/:na] Caused by: java.lang.IllegalStateException: Failed to introspect Class [org.springframework.cloud.context.properties.ConfigurationPropertiesBeans] from ClassLoader [jdk.internal.loader.ClassLoaders$AppClassLoader@1f89ab83]	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:481) ~[spring-core-5.3.6.jar:5.3.6]	at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:321) ~[spring-core-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.buildLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:232) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.findLifecycleMetadata(InitDestroyAnnotationBeanPostProcessor.java:210) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(InitDestroyAnnotationBeanPostProcessor.java:149) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(CommonAnnotationBeanPostProcessor.java:294) ~[spring-context-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1098) ~[spring-beans-5.3.6.jar:5.3.6]	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:576) ~[spring-beans-5.3.6.jar:5.3.6]	... 31 common frames omitted Caused by: java.lang.NoClassDefFoundError: org/springframework/boot/context/properties/ConfigurationBeanFactoryMetadata	at java.base/java.lang.Class.getDeclaredMethods0(Native Method) ~[na:na]	at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3167) ~[na:na]	at java.base/java.lang.Class.getDeclaredMethods(Class.java:2310) ~[na:na]	at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:463) ~[spring-core-5.3.6.jar:5.3.6]	... 38 common frames omitted Caused by: java.lang.ClassNotFoundException: org.springframework.boot.context.properties.ConfigurationBeanFactoryMetadata	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) ~[na:na]	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]	... 42 common frames omitted

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