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

@Servicepublic 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

@Componentpublic 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 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 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 omittedCaused 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 omittedCaused 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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