admin管理员组文章数量:1599887
springboot项目引入nacos服务依赖报错,
springboot版本:2.7.4
spring-cloud版本2021.0.4
spring-cloud-alibaba版本2021.0.4.0
<!--nacos 服务注册发现-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
完整报错信息:
15:17:21:310 ERROR 15820 --- [ main] o.s.boot.SpringApplication : Application run failed
java.lang.IllegalStateException: Error processing condition on com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancerClientConfiguration.nacosLoadBalancer
at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:60) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForBeanMethod(ConfigurationClassBeanDefinitionReader.java:193) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:153) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:129) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:343) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:247) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:311) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:112) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.23.jar:5.3.23]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.4.jar:2.7.4]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.4.jar:2.7.4]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.4.jar:2.7.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.4.jar:2.7.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.4.jar:2.7.4]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.4.jar:2.7.4]
at com.JinyiItemApplication.main(JinyiItemApplication.java:12) ~[classes/:na]
Caused by: java.lang.IllegalStateException: @ConditionalOnMissingBean did not specify a bean using type, name or annotation and the attempt to deduce the bean's type failed
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.validate(OnBeanCondition.java:494) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.<init>(OnBeanCondition.java:443) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition.getMatchOutcome(OnBeanCondition.java:154) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
... 17 common frames omitted
Caused by: org.springframework.boot.autoconfigure.condition.OnBeanCondition$BeanTypeDeductionException: Failed to deduce bean type for com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancerClientConfiguration.nacosLoadBalancer
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanTypeForBeanMethod(OnBeanCondition.java:524) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanType(OnBeanCondition.java:513) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.<init>(OnBeanCondition.java:436) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
... 19 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583) ~[na:na]
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:398) ~[na:na]
at org.springframework.boot.autoconfigure.condition.FilteringSpringBootCondition.resolve(FilteringSpringBootCondition.java:108) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.getReturnType(OnBeanCondition.java:532) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
at org.springframework.boot.autoconfigure.condition.OnBeanCondition$Spec.deducedBeanTypeForBeanMethod(OnBeanCondition.java:520) ~[spring-boot-autoconfigure-2.7.4.jar:2.7.4]
... 21 common frames omitted
Process finished with exit code 1
这段日志显示了一个Spring Boot应用程序在启动时遇到了错误。错误的核心是java.lang.IllegalStateException
,这通常表明Spring Boot在处理条件注解时遇到了问题。具体来说,错误信息指出@ConditionalOnMissingBean
注解没有正确指定一个bean的使用类型、名称或注解,并且在尝试推断bean类型时失败了。
具体的错误链如下:
-
IllegalStateException
: 由于@ConditionalOnMissingBean
注解没有正确指定bean,导致Spring Boot无法确定是否应该创建这个bean。 -
OnBeanCondition$BeanTypeDeductionException
: Spring Boot尝试推断com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancerClientConfiguration.nacosLoadBalancer
方法的返回类型时失败了。 -
ClassNotFoundException
: 无法找到org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer
类,这通常是因为缺少相关的依赖库。
(1) 刚开始参考官方文档GitHub - alibaba/spring-cloud-alibaba: Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.
以为是版本问题
于是修改版本 为2.6.5,仍然报同样的错误
来来回回改了好几次版本,仍然报错
(2) 后来查了半天,仔细看报错信息,尝试引入依赖
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-loadbalancer</artifactId>
</dependency>
于是再次启动项目,成功!
返回nacos网页管理页面,发现注册成功
总结:
要解决这个问题,可以尝试以下步骤:
-
确保你的项目包含了所有必要的依赖。根据错误信息,看起来是缺少了Spring Cloud LoadBalancer相关的依赖。你需要在你的
pom.xml
或build.gradle
文件中添加相应的依赖。 -
检查
com.alibaba.cloud.nacos.loadbalancer.NacosLoadBalancerClientConfiguration
类中的nacosLoadBalancer
方法,确保它返回的是一个有效的bean类型。 -
如果你正在使用Spring Cloud的版本管理工具(如Spring Cloud Release Train或Spring Cloud Platform),确保所有相关的Spring Cloud组件版本是兼容的。
-
清理并重新构建项目,有时候IDE或构建工具可能会缓存旧的依赖信息。
-
如果问题仍然存在,尝试查看Spring Boot和Spring Cloud的官方文档,或者在社区论坛和Stack Overflow上搜索类似问题。
-
考虑升级到最新版本的Spring Boot和Spring Cloud,因为新版本可能修复了你遇到的问题。
本文标签: 报错langIllegalStateExceptionNacosJava
版权声明:本文标题:引入nacos 报错java.lang.IllegalStateException: Error processing condition on com.alibaba.cloud.nacos.loa 内容由热心网友自发贡献,该文观点仅代表作者本人, 转载请联系作者并注明出处:https://m.elefans.com/dianzi/1728322481a1154005.html, 本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容,一经查实,本站将立刻删除。
发表评论