高版本SpringBoot加载bootstrap.yml失败的问题现象:

ERROR 11184 --- [           main] c.a.cloud.nacos.NacosConfigProperties    : create config service error!properties=NacosConfigProperties{serverAddr='null', encode='null', group='DEFAULT_GROUP', prefix='null', fileExtension='properties', timeout=3000, endpoint='null', namespace='null', accessKey='null', secretKey='null', contextPath='null', clusterName='null', name='null', sharedDataids='null', refreshableDataids='null', extConfig=null},e=,

com.alibaba.nacos.api.exception.NacosException: java.lang.reflect.InvocationTargetException
	at com.alibaba.nacos.api.config.ConfigFactory.createConfigService(ConfigFactory.java:45) ~[nacos-api-1.1.1.jar:na]
	at com.alibaba.nacos.api.NacosFactory.createConfigService(NacosFactory.java:43) ~[nacos-api-1.1.1.jar:na]
	at com.alibaba.cloud.nacos.NacosConfigProperties.configServiceInstance(NacosConfigProperties.java:346) ~[spring-cloud-alibaba-nacos-config-2.1.0.RELEASE.jar:2.1.0.RELEASE]
	at com.alibaba.cloud.nacos.NacosConfigAutoConfiguration.nacosContextRefresher(NacosConfigAutoConfiguration.java:64) [spring-cloud-alibaba-nacos-config-2.1.0.RELEASE.jar:2.1.0.RELEASE]
	at com.alibaba.cloud.nacos.NacosConfigAutoConfiguration$$EnhancerBySpringCGLIB$$cc996c14.CGLIB$nacosContextRefresher$3() [spring-cloud-alibaba-nacos-config-2.1.0.RELEASE.jar:2.1.0.RELEASE]
	at com.alibaba.cloud.nacos.NacosConfigAutoConfiguration$$EnhancerBySpringCGLIB$$cc996c14$$FastClassBySpringCGLIB$$157d10c6.invoke() [spring-cloud-alibaba-nacos-config-2.1.0.RELEASE.jar:2.1.0.RELEASE]
	at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) [spring-core-5.3.12.jar:5.3.12]
	at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331) [spring-context-5.3.12.jar:5.3.12]
	at com.alibaba.cloud.nacos.NacosConfigAutoConfiguration$$EnhancerBySpringCGLIB$$cc996c14.nacosContextRefresher() [spring-cloud-alibaba-nacos-config-2.1.0.RELEASE.jar:2.1.0.RELEASE]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_201]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_201]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_201]
	at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:638) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) [spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:944) ~[spring-beans-5.3.12.jar:5.3.12]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918) ~[spring-context-5.3.12.jar:5.3.12]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.12.jar:5.3.12]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145) ~[spring-boot-2.5.6.jar:2.5.6]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:754) ~[spring-boot-2.5.6.jar:2.5.6]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-2.5.6.jar:2.5.6]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) ~[spring-boot-2.5.6.jar:2.5.6]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1343) ~[spring-boot-2.5.6.jar:2.5.6]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1332) ~[spring-boot-2.5.6.jar:2.5.6]
	at com.luck.bookstore.coupon.BookstoreCouponApplication.main(BookstoreCouponApplication.java:12) ~[classes/:na]
Caused by: java.lang.reflect.InvocationTargetException: null
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.8.0_201]
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) ~[na:1.8.0_201]
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.8.0_201]
	at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_201]
	at com.alibaba.nacos.api.config.ConfigFactory.createConfigService(ConfigFactory.java:42) ~[nacos-api-1.1.1.jar:na]
	... 33 common frames omitted
Caused by: com.alibaba.nacos.api.exception.NacosException: endpoint is blank
	at com.alibaba.nacos.client.config.impl.ServerListManager.(ServerListManager.java:154) ~[nacos-client-1.1.1.jar:na]
	at com.alibaba.nacos.client.config.http.ServerHttpAgent.(ServerHttpAgent.java:244) ~[nacos-client-1.1.1.jar:na]
	at com.alibaba.nacos.client.config.NacosConfigService.(NacosConfigService.java:83) ~[nacos-client-1.1.1.jar:na]
	... 38 common frames omitted

问题原因:

在Spring Cloud2020中，他们对bootstrap的工作方式进行了更改，您必须包括一个新的启动器：spring-cloud-starter-bootstrap

解决方法:

添加如下依赖

 
       
            org.springframework.cloud
            spring-cloud-starter-bootstrap
            3.0.0