springboot2.2.6.RELEASE集成dubbo插件dubbo-spring-boot-starter2.0.0报错ApplicationConfig.application == nul
报错代码如下所示。
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-04-11 22:21:51.809 ERROR 18408 --- [ main] o.s.boot.SpringApplication : Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration': Invocation of init method failed; nested exception is java.lang.IllegalStateException: ApplicationConfig.application == null
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:160) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:882) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.6.RELEASE.jar:2.2.6.RELEASE]
at cn.sccdlg.springboot.SpringbootDubboProviderApplication.main(SpringbootDubboProviderApplication.java:13) [classes/:na]
Caused by: java.lang.IllegalStateException: ApplicationConfig.application == null
at com.alibaba.dubbo.config.AbstractConfig.appendParameters(AbstractConfig.java:245) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.config.AbstractConfig.appendParameters(AbstractConfig.java:180) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.config.AbstractInterfaceConfig.loadRegistries(AbstractInterfaceConfig.java:175) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.config.ServiceConfig.doExportUrls(ServiceConfig.java:355) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.config.ServiceConfig.doExport(ServiceConfig.java:316) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.config.ServiceConfig.export(ServiceConfig.java:215) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration.initProviderBean(DubboProviderAutoConfiguration.java:84) ~[dubbo-spring-boot-starter-2.0.0.jar:na]
at com.alibaba.dubbo.spring.boot.DubboProviderAutoConfiguration.init(DubboProviderAutoConfiguration.java:45) ~[dubbo-spring-boot-starter-2.0.0.jar:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:389) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:333) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:157) ~[spring-beans-5.2.5.RELEASE.jar:5.2.5.RELEASE]
... 18 common frames omitted
Caused by: java.lang.IllegalStateException: ApplicationConfig.application == null
at com.alibaba.dubbo.config.AbstractConfig.appendParameters(AbstractConfig.java:230) ~[dubbo-2.6.0.jar:2.6.0]
... 32 common frames omitted
经过网络查询原因，得到结果是：springboot2.2.6RELEASE集成dubbo插件dubbo-spring-boot-starter2.0.0的时候没有在配置文件中找到dubbo服务的名称。
我的错误写法是：
# Dubbo配置
spring.dubbo.appname=springboot-dubbo-provider
spring.dubbo.registry=zookeeper://192.168.235.129:2181
这个是dubbo插件版本为1.0.0的写法；
针对此次集成的版本，写法是：
# Dubbo配置 (dubbo-spring-boot-starter插件版本是2.0.0的写法)
spring.application.name=.name=springboot-dubbo-provider
spring.dubbo.registry=zookeeper://192.168.235.129:2181
以上就解决了这个报错问题，不容易呀，搞了许久。