인프런 커뮤니티 질문&답변

학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요.

1. 강의 내용과 관련된 질문을 남겨주세요.
2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요.
(자주 하는 질문 링크: https://bit.ly/3fX6ygx)
3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요.
(질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG)

질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요.
=========================================
[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? (예/아니오)
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오)
3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오)

[질문 내용]
여기에 질문 내용을 남겨주세요.

webapp 카테고리에

index.html
basic.html 만든 후 ServletApplication 실행하면 ClassNotFoundException 에러가 발생합니다.

"C:\Program Files\Java\jdk-20\bin\java.exe" "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 232.7754.73\lib\idea_rt.jar=62663:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 232.7754.73\bin" -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath C:\Users\USER\Desktop\servlet\out\production\classes;C:\Users\USER\Desktop\servlet\out\production\resources;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-web\3.1.2\30b824817e764a5a5a1e9fb46e7ace40bcfa3185\spring-boot-starter-web-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-json\3.1.2\c48d521879dbbcebe1a99f47257612968e022f5b\spring-boot-starter-json-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter\3.1.2\c09a48df6fbc2b07b7aef1256b45260a3478b49f\spring-boot-starter-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-webmvc\6.0.11\892b4a63b5d930c2c43058c6db0c2c65401fb078\spring-webmvc-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-web\6.0.11\c32a7bf6b88b83bac6aa63866fcf208892640446\spring-web-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jsr310\2.15.2\30d16ec2aef6d8094c5e2dce1d95034ca8b6cb42\jackson-datatype-jsr310-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.module\jackson-module-parameter-names\2.15.2\75f8d2788db20f6c587c7a19e94fb6248c314241\jackson-module-parameter-names-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.datatype\jackson-datatype-jdk8\2.15.2\66a50e089cfd2f93896b9b6f7a734cea7bcf2f31\jackson-datatype-jdk8-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-databind\2.15.2\9353b021f10c307c00328f52090de2bdb4b6ff9c\jackson-databind-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-autoconfigure\3.1.2\ea294976f925441fc1d5a5414d5d31717f06aa3c\spring-boot-autoconfigure-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot\3.1.2\3cf070561716277ec91ebadc07362dd0b4a9f63f\spring-boot-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-logging\3.1.2\4e47bd132fdd0d60ad57d70bdc99198b182166ee\spring-boot-starter-logging-3.1.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-core\6.0.11\87834b5cf95c6fa28f5bdf8a85e0daf0bff918a8\spring-core-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.yaml\snakeyaml\1.33\2cd0a87ff7df953f810c344bdf2fe3340b954c69\snakeyaml-1.33.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-context\6.0.11\a7b10f3d3c1492bfc4e6d7c966cd2e21f4d441f5\spring-context-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aop\6.0.11\15b85c825558fadb85e3c77779d7225ce7e4a7bc\spring-aop-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-beans\6.0.11\8513efc6e94b407b5cd85f69eeec511f1ef34164\spring-beans-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-expression\6.0.11\1d0940120a275719c3988c592068f4acf807fe59\spring-expression-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\io.micrometer\micrometer-observation\1.11.2\704e145c4801320b4c7abf6c1a5b000155b069db\micrometer-observation-1.11.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-annotations\2.15.2\4724a65ac8e8d156a24898d50fd5dbd3642870b8\jackson-annotations-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\com.fasterxml.jackson.core\jackson-core\2.15.2\a6fe1836469a69b3ff66037c324d75fc66ef137c\jackson-core-2.15.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\ch.qos.logback\logback-classic\1.4.8\f00ba91d993e4d14301b11968d3cacc3be7ef3e1\logback-classic-1.4.8.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-to-slf4j\2.20.0\d37f81f8978e2672bc32c82712ab4b3f66624adc\log4j-to-slf4j-2.20.0.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.slf4j\jul-to-slf4j\2.0.7\a48f44aeaa8a5ddc347007298a28173ac1fbbd8b\jul-to-slf4j-2.0.7.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.springframework\spring-jcl\6.0.11\c9b16cdb6d4874ba4118fcdd4b0335f6278b378\spring-jcl-6.0.11.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\io.micrometer\micrometer-commons\1.11.2\f03f87bd7eacf79b00aa89907c6e30e0ec86b4\micrometer-commons-1.11.2.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\ch.qos.logback\logback-core\1.4.8\3fba9c105e0efc5ffdcda701379687917d5286f7\logback-core-1.4.8.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.slf4j\slf4j-api\2.0.7\41eb7184ea9d556f23e18b5cb99cad1f8581fc00\slf4j-api-2.0.7.jar;C:\Users\USER\.gradle\caches\modules-2\files-2.1\org.apache.logging.log4j\log4j-api\2.20.0\1fe6082e660daf07c689a89c94dc0f49c26b44bb\log4j-api-2.20.0.jar hello.servlet.ServletApplication

. ____ _

/\\ / ___'_ __ (_)_ _ \ \ \ \

( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \

\\/ ___)| |_)| | | | | || (_| | ) ) ) )

' |____| .__|_| |_|_| |_\__, | / / / /

=========|_|==============|___/=/_/_/_/

:: Spring Boot :: (v3.1.2)

2023-08-02T16:17:15.220+09:00 INFO 14084 --- [ main] hello.servlet.ServletApplication : Starting ServletApplication using Java 20.0.1 with PID 14084 (C:\Users\USER\Desktop\servlet\out\production\classes started by USER in C:\Users\USER\Desktop\servlet)

2023-08-02T16:17:15.223+09:00 INFO 14084 --- [ main] hello.servlet.ServletApplication : No active profile set, falling back to 1 default profile: "default"

2023-08-02T16:17:15.575+09:00 WARN 14084 --- [ main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletComponentRegisteringPostProcessor': Instantiation of supplied bean failed

2023-08-02T16:17:15.590+09:00 INFO 14084 --- [ main] .s.b.a.l.ConditionEvaluationReportLogger :

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

2023-08-02T16:17:15.608+09:00 ERROR 14084 --- [ main] o.s.boot.SpringApplication : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'servletComponentRegisteringPostProcessor': Instantiation of supplied bean failed

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1220) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1158) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:560) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:199) ~[spring-context-6.0.11.jar:6.0.11]

at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:771) ~[spring-context-6.0.11.jar:6.0.11]

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:589) ~[spring-context-6.0.11.jar:6.0.11]

at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:436) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:312) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-3.1.2.jar:3.1.2]

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

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

at org.springframework.boot.web.servlet.WebServletHandler.<init>(WebServletHandler.java:39) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.web.servlet.ServletComponentRegisteringPostProcessor.<clinit>(ServletComponentRegisteringPostProcessor.java:49) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.boot.web.servlet.ServletComponentScanRegistrar$ServletComponentRegisteringPostProcessorBeanDefinition.lambda$getInstanceSupplier$0(ServletComponentScanRegistrar.java:96) ~[spring-boot-3.1.2.jar:3.1.2]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainInstanceFromSupplier(AbstractAutowireCapableBeanFactory.java:1254) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.DefaultListableBeanFactory.obtainInstanceFromSupplier(DefaultListableBeanFactory.java:949) ~[spring-beans-6.0.11.jar:6.0.11]

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.obtainFromSupplier(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-6.0.11.jar:6.0.11]

... 16 common frames omitted

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

at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641) ~[na:na]

at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188) ~[na:na]

at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]

... 22 common frames omitted

Process finished with exit code 1