這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)低版本idea中SpringBoot項(xiàng)目啟動(dòng)失敗后提示找不到 javax/servlet/ServletContext類該怎么解決,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
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今天新入職的小伙伴找我?guī)退磦€(gè)問(wèn)題,同樣的springboot工程,同樣都是用idea,在我們的電腦上啟動(dòng)正常,但是在他的電腦上就是不行,直接報(bào)錯(cuò):java.lang.NoClassDefFoundError: javax/servlet/ServletContext,開始以為是沒(méi)編譯好,但是重新編譯之后依舊不行。
詳細(xì)錯(cuò)誤信息如下:
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.5.3.RELEASE) 2020-07-13 17:32:02.265 [main] INFO com.sowin.frpx.FrpxApplication - Starting FrpxApplication on USERUQI-3VMPK83 with PID 9232 (started by Administrator in D:\我的文件\開發(fā)2\frpx) 2020-07-13 17:32:02.267 [main] DEBUG com.sowin.frpx.FrpxApplication - Running with Spring Boot v1.5.3.RELEASE, Spring v4.3.8.RELEASE 2020-07-13 17:32:02.267 [main] INFO com.sowin.frpx.FrpxApplication - The following profiles are active: dev 2020-07-13 17:32:02.434 [background-preinit] INFO org.hibernate.validator.internal.util.Version - HV000001: Hibernate Validator 5.3.5.Final 2020-07-13 17:32:02.462 [main] INFO o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@134d26af: startup date [Mon Jul 13 17:32:02 CST 2020]; root of context hierarchy 2020-07-13 17:32:02.838 [main] WARN o.s.c.a.AnnotationConfigApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.sowin.frpx.FrpxApplication]; nested exception is java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer 2020-07-13 17:32:02.840 [main] ERROR o.s.b.factory.support.DefaultListableBeanFactory - Destroy method on bean with name 'org.springframework.boot.autoconfigure.internalCachingMetadataReaderFactory' threw an exception java.lang.IllegalStateException: ApplicationEventMulticaster not initialized - call 'refresh' before multicasting events via the context: org.springframework.context.annotation.AnnotationConfigApplicationContext@134d26af: startup date [Mon Jul 13 17:32:02 CST 2020]; root of context hierarchy at org.springframework.context.support.AbstractApplicationContext.getApplicationEventMulticaster(AbstractApplicationContext.java:404) at org.springframework.context.support.ApplicationListenerDetector.postProcessBeforeDestruction(ApplicationListenerDetector.java:97) at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:253) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:578) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:554) at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:961) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:523) at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:968) at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1033) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:555) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) at com.sowin.frpx.FrpxApplication.main(FrpxApplication.java:23) 2020-07-13 17:32:02.845 [main] ERROR org.springframework.boot.SpringApplication - Application startup failed org.springframework.beans.factory.BeanDefinitionStoreException: Failed to parse configuration class [com.sowin.frpx.FrpxApplication]; nested exception is java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:181) at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:308) at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:228) at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:270) at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:686) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:524) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) at com.sowin.frpx.FrpxApplication.main(FrpxApplication.java:23) Caused by: java.lang.IllegalStateException: Failed to introspect annotated methods on class org.springframework.boot.web.support.SpringBootServletInitializer at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:163) at org.springframework.context.annotation.ConfigurationClassParser.retrieveBeanMethodMetadata(ConfigurationClassParser.java:380) at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:314) at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:245) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:198) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:167) ... 12 common frames omitted Caused by: java.lang.NoClassDefFoundError: javax/servlet/ServletContext at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2701) at java.lang.Class.getDeclaredMethods(Class.java:1975) at org.springframework.core.type.StandardAnnotationMetadata.getAnnotatedMethods(StandardAnnotationMetadata.java:152) ... 17 common frames omitted Caused by: java.lang.ClassNotFoundException: javax.servlet.ServletContext at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 21 common frames omitted Disconnected from the target VM, address: '127.0.0.1:57010', transport: 'socket' Process finished with exit code 1
在網(wǎng)上查了一下,看到很多人提到pom文件中的jar包scope作用域問(wèn)題,將scope設(shè)置為provided時(shí),在打包時(shí)是不會(huì)被打進(jìn)去的,而我們的工程中,由于要使用外部tomcat容器,所以屏蔽掉了springboot內(nèi)嵌的tomcat。
但是當(dāng)時(shí)覺(jué)著跟這次的問(wèn)題不相關(guān),也就沒(méi)有怎么太在意,后來(lái),同事?lián)Q成eclipse之后,竟然把項(xiàng)目啟動(dòng)起來(lái)了。。。
看起來(lái)似乎是工具的問(wèn)題,我就順著這個(gè)方向繼續(xù)查原因,發(fā)現(xiàn)在idea的“Edit Configurations”菜單中是可以進(jìn)行設(shè)置maven的這個(gè)scope作用域的。
如下圖所示:
紅框所示之處,勾掉了之后,provided就不會(huì)生效了,運(yùn)行時(shí)就會(huì)找不到依賴的jar包。
我趕緊跑到同事電腦上一看,點(diǎn)開之后卻怎么都找不到上圖紅框中的設(shè)置,又是一番折騰,發(fā)現(xiàn)他的idea版本是2016,而我的是2020了。
上述就是小編為大家分享的低版本idea中SpringBoot項(xiàng)目啟動(dòng)失敗后提示找不到 javax/servlet/ServletContext類該怎么解決了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí),歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。
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