html - HTTP ステータス 500 - サーブレット検索の Servlet.init() が例外をスローしましたか?

Question

この例外が発生しましたが、例外が発生した場所が正確にはわかりません。この関連トピックに関する投稿がたくさんあることは知っていますが、私の質問に対する解決策を見つけたものはありません。

HTTP Status 500 - Servlet.init() for servlet search threw exception

type Exception report

message Servlet.init() for servlet search threw exception

description The server encountered an internal error that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Servlet.init() for servlet search threw exception
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)
root cause

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0': Invocation of init method failed; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.controller.ProgramUpdateController] for bean with name 'programUpdateController' defined in file [/usr/share/apache-tomcat-7.0.63/webapps/search/WEB-INF/classes/com/lukup/smr/word/controller/ProgramUpdateController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/ProgramUpdateController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.ProgramUpdateController)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.controller.ProgramUpdateController] for bean with name 'programUpdateController' defined in file [/usr/share/apache-tomcat-7.0.63/webapps/search/WEB-INF/classes/com/lukup/smr/word/controller/ProgramUpdateController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/ProgramUpdateController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.ProgramUpdateController)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.controller.CronJobController] for bean with name 'cronJobController' defined in file [/usr/share/apache-tomcat-7.0.63/webapps/search/WEB-INF/classes/com/lukup/smr/word/controller/CronJobController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/CronJobController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.CronJobController)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.controller.WordSearchController] for bean with name 'wordSearchController' defined in file [/usr/share/apache-tomcat-7.0.63/webapps/search/WEB-INF/classes/com/lukup/smr/word/controller/WordSearchController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/WordSearchController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.WordSearchController)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.service.CronJobService] for bean with name 'cronjobservice' defined in ServletContext resource [/WEB-INF/search-servlet.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/service/CronJobService : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.service.CronJobService)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.service.ProgramUpdateService] for bean with name 'programupdateservice' defined in ServletContext resource [/WEB-INF/search-servlet.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/service/ProgramUpdateService : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.service.ProgramUpdateService)
Related cause: org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.service.WordSearchService] for bean with name 'wordsearchservice' defined in ServletContext resource [/WEB-INF/search-servlet.xml]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/service/WordSearchService : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.service.WordSearchService)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1578)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:667)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:633)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:681)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:552)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:493)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)
root cause

org.springframework.beans.factory.CannotLoadBeanClassException: Error loading class [com.lukup.smr.word.controller.ProgramUpdateController] for bean with name 'programUpdateController' defined in file [/usr/share/apache-tomcat-7.0.63/webapps/search/WEB-INF/classes/com/lukup/smr/word/controller/ProgramUpdateController.class]: problem with class file or dependent class; nested exception is java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/ProgramUpdateController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.ProgramUpdateController)
    org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1354)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597)
    org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1444)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:445)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:423)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:409)
    org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:1141)
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:178)
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:163)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:133)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:667)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:633)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:681)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:552)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:493)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)
root cause

java.lang.UnsupportedClassVersionError: com/lukup/smr/word/controller/ProgramUpdateController : Unsupported major.minor version 52.0 (unable to load class com.lukup.smr.word.controller.ProgramUpdateController)
    org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2963)
    org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1212)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1692)
    org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1573)
    org.springframework.util.ClassUtils.forName(ClassUtils.java:250)
    org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:394)
    org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1396)
    org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1343)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:628)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:597)
    org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1444)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:445)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:423)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:409)
    org.springframework.context.support.AbstractApplicationContext.getBeanNamesForType(AbstractApplicationContext.java:1141)
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:178)
    org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:163)
    org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:133)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:305)
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:301)
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:196)
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:834)
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:537)
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:667)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:633)
    org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:681)
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:552)
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:493)
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    javax.servlet.GenericServlet.init(GenericServlet.java:158)
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
    org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:190)
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
    org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    java.lang.Thread.run(Thread.java:745)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.63 logs.

Apache Tomcat/7.0.63

score 0 · Accepted Answer

推奨オプション

サポートされていない major.minor バージョン 52.0 は、Web/アプリケーションサーバーとの JDK バージョンの互換性の問題があることを意味します。
より高いJDK、できればJDK 1.8（推奨）に変更し、コードを再コンパイルすると問題が解決します。
このシナリオでは、Tomcat 8.X + JDK 1.8 を使用して問題を解決することを強くお勧めします。

html - HTTP ステータス 500 - サーブレット検索の Servlet.init() が例外をスローしましたか?

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