인프런 커뮤니티 질문&답변

수업듣고 잘 따라하고 있는데 잘 되던것이 갑자기 클래스 낫 파운드 익셉션이 납니다..

왜그런지 모르겠어요 ㅠ

/Library/Java/JavaVirtualMachines/jdk-11.jdk/Contents/Home/bin/java -javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=56469:/Applications/IntelliJ IDEA CE.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Users/songhan/Desktop/스프링 MVC 1편/servlet/out/production/classes:/Users/songhan/Desktop/스프링 MVC 1편/servlet/out/production/resources:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-web/2.7.3/9e36c7517c4f872b69d0665e1dd46bd6d83c43b7/spring-boot-starter-web-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-json/2.7.3/38c88404d68926aaf6c0914199e8c5e766946de2/spring-boot-starter-json-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter/2.7.3/6b0c093af667bf645cd5f49372e2a2540ae2855f/spring-boot-starter-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-webmvc/5.3.22/519d86b7ac9b8b6bb54739eb4eb73dc13a263b28/spring-webmvc-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-web/5.3.22/fdab9b8d8df2e6a8fb90f2481c361bcf2c129567/spring-web-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.datatype/jackson-datatype-jsr310/2.13.3/ad2f4c61aeb9e2a8bb5e4a3ed782cfddec52d972/jackson-datatype-jsr310-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.module/jackson-module-parameter-names/2.13.3/f71c4ecc1a403787c963f68bc619b78ce1d2687b/jackson-module-parameter-names-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.datatype/jackson-datatype-jdk8/2.13.3/d4884595d5aab5babdb00ddbd693b8fd36b5ec3c/jackson-datatype-jdk8-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-databind/2.13.3/56deb9ea2c93a7a556b3afbedd616d342963464e/jackson-databind-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-autoconfigure/2.7.3/4c96169e8d71c9c41f07a40d011dbd41898180ac/spring-boot-autoconfigure-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot/2.7.3/3a8d641077565b7eaec3b2f91d5b83a6800f5895/spring-boot-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-logging/2.7.3/a1e4a13b656182ba10b4c0c7848f91cd6f854fdf/spring-boot-starter-logging-2.7.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.3.22/661fc01832716c7eedebf995c6841b2f7117c63d/spring-core-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.yaml/snakeyaml/1.30/8fde7fe2586328ac3c68db92045e1c8759125000/snakeyaml-1.30.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-context/5.3.22/fdd59bb4795c7a399e95ec4a5c8b91103e3189fd/spring-context-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-expression/5.3.22/c056f9e9994b18c95deead695f9471952d1f21d1/spring-expression-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-aop/5.3.22/2f9f00efbff8432f145ccffeb93e6a1819bac362/spring-aop-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-beans/5.3.22/866c2022b5fef05b1702f4a07cfa5598660ce08a/spring-beans-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-annotations/2.13.3/7198b3aac15285a49e218e08441c5f70af00fc51/jackson-annotations-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/com.fasterxml.jackson.core/jackson-core/2.13.3/a27014716e4421684416e5fa83d896ddb87002da/jackson-core-2.13.3.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.2.11/4741689214e9d1e8408b206506cbe76d1c6a7d60/logback-classic-1.2.11.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.apache.logging.log4j/log4j-to-slf4j/2.17.2/17dd0fae2747d9a28c67bc9534108823d2376b46/log4j-to-slf4j-2.17.2.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.slf4j/jul-to-slf4j/1.7.36/ed46d81cef9c412a88caef405b58f93a678ff2ca/jul-to-slf4j-1.7.36.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.springframework/spring-jcl/5.3.22/811ace5e5eb379654ed96fd7844809db51af74a5/spring-jcl-5.3.22.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-core/1.2.11/a01230df5ca5c34540cdaa3ad5efb012f1f1f792/logback-core-1.2.11.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.36/6c62681a2f655b49963a5983b8b0950a6120ae14/slf4j-api-1.7.36.jar:/Users/songhan/.gradle/caches/modules-2/files-2.1/org.apache.logging.log4j/log4j-api/2.17.2/f42d6afa111b4dec5d2aea0fe2197240749a4ea6/log4j-api-2.17.2.jar hello.servlet.ServletApplication

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:: Spring Boot :: (v2.7.3)

2022-08-31 22:35:59.819 INFO 17322 --- [ main] hello.servlet.ServletApplication : Starting ServletApplication using Java 11 on Songui-MacBookPro.local with PID 17322 (/Users/songhan/Desktop/스프링 MVC 1편/servlet/out/production/classes started by songhan in /Users/songhan/Desktop/스프링 MVC 1편/servlet)

2022-08-31 22:35:59.827 INFO 17322 --- [ main] hello.servlet.ServletApplication : No active profile set, falling back to 1 default profile: "default"

2022-08-31 22:36:00.753 WARN 17322 --- [ main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletComponentRegisteringPostProcessor': Unexpected exception during bean creation; nested exception is java.lang.NoClassDefFoundError: javax/servlet/annotation/WebServlet

2022-08-31 22:36:00.767 INFO 17322 --- [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2022-08-31 22:36:00.792 ERROR 17322 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletComponentRegisteringPostProcessor': Unexpected exception during bean creation; nested exception is java.lang.NoClassDefFoundError: javax/servlet/annotation/WebServlet

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:213) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:196) ~[spring-context-5.3.22.jar:5.3.22]

at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:746) ~[spring-context-5.3.22.jar:5.3.22]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:564) ~[spring-context-5.3.22.jar:5.3.22]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.3.jar:2.7.3]

at hello.servlet.ServletApplication.main(ServletApplication.java:12) ~[classes/:na]

Caused by: java.lang.NoClassDefFoundError: javax/servlet/annotation/WebServlet

at org.springframework.boot.web.servlet.WebServletHandler.<init>(WebServletHandler.java:39) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.web.servlet.ServletComponentRegisteringPostProcessor.<clinit>(ServletComponentRegisteringPostProcessor.java:49) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.boot.web.servlet.ServletComponentScanRegistrar$ServletComponentRegisteringPostProcessorBeanDefinition.lambda$getInstanceSupplier$0(ServletComponentScanRegistrar.java:94) ~[spring-boot-2.7.3.jar:2.7.3]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1249) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1191) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582) ~[spring-beans-5.3.22.jar:5.3.22]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542) ~[spring-beans-5.3.22.jar:5.3.22]

... 13 common frames omitted

Caused by: java.lang.ClassNotFoundException: javax.servlet.annotation.WebServlet

at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582) ~[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]

... 20 common frames omitted

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