IllegalArgumentException异常

原创于 2023-05-10 11:17:51 发布

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#spring #java #spring boot

应用程序在启动时遇到IllegalArgumentException异常，具体是BeandictConfig的创建失败，因为无法解析spring.datasource.dict.username的占位符。问题根源通常在于Nacos的配置信息缺失或错误。解决方法是检查Nacos和项目中的配置文件，确保所有必需的配置项都已正确设置。

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1.出现IllegalArgumentException异常

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-05-10 09:13:44.870 [TID:N/A] [main] ERROR [org.springframework.boot.SpringApplication:SpringApplication.java:835]  - Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dictConfig': Injection of autowired dependencies failed; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.dict.username' in value "${spring.datasource.dict.username}"
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:405)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:619)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:745)
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:420)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1317)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
	at com.crscl.thtj.data.CloudDataModel.main(CloudDataModel.java:22)
Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder 'spring.datasource.dict.username' in value "${spring.datasource.dict.username}"
	at org.springframework.util.PropertyPlaceholderHelper.parseStringValue(PropertyPlaceholderHelper.java:180)
	at org.springframework.util.PropertyPlaceholderHelper.replacePlaceholders(PropertyPlaceholderHelper.java:126)
	at org.springframework.core.env.AbstractPropertyResolver.doResolvePlaceholders(AbstractPropertyResolver.java:239)
	at org.springframework.core.env.AbstractPropertyResolver.resolveRequiredPlaceholders(AbstractPropertyResolver.java:210)
	at org.springframework.context.support.PropertySourcesPlaceholderConfigurer.lambda$processProperties$0(PropertySourcesPlaceholderConfigurer.java:191)
	at org.springframework.beans.factory.support.AbstractBeanFactory.resolveEmbeddedValue(AbstractBeanFactory.java:936)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1332)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:656)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:639)
	at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:119)
	at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:399)
	... 17 common frames omitted
2023-05-10 09:13:44.885 [TID:N/A] [Thread-8] WARN  [com.alibaba.nacos.common.notify.NotifyCenter:NotifyCenter.java:136]  - [NotifyCenter] Start destroying Publisher
2023-05-10 09:13:44.885 [TID:N/A] [Thread-2] WARN  [com.alibaba.nacos.common.http.HttpClientBeanHolder:HttpClientBeanHolder.java:108]  - [HttpClientBeanHolder] Start destroying common HttpClient
2023-05-10 09:13:44.886 [TID:N/A] [Thread-8] WARN  [com.alibaba.nacos.common.notify.NotifyCenter:NotifyCenter.java:153]  - [NotifyCenter] Destruction of the end

2.问题