html - HTTP 状态 500 - 用于 servlet 搜索的 Servlet.init() 抛出异常？

Question

我得到了这个异常，但我不确定异常到底发生在哪里，请帮助我。我知道有很多关于这个相关主题的帖子，但我发现没有一个可以解决我的问题。

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

推荐选项

不受支持的major.minor 52.0 版意味着您的Web/应用程序服务器存在JDK 版本兼容性问题。
将其更改为更高的 JDK，最好是 JDK 1.8（推荐）并重新编译您的代码将解决您的问题。
在这种情况下，强烈建议使用 tomcat 8.X + JDK 1.8 来解决您的问题。

html - HTTP 状态 500 - 用于 servlet 搜索的 Servlet.init() 抛出异常？

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