在配置servlet不同路徑時遇上以下兩個錯誤：

java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String； java.lang.ClassNotFoundException: org.apache.jsp.index_jsp；

對于第一個問題，我上網查閱了很多資料后發現，可能是tomcat版本沖突導致，catalina log如下：

19-Feb-2018 08:26:44.175 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:Apache Tomcat/8.5.2819-Feb-2018 08:26:44.175 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Feb 6 2018 23:10:25 UTC19-Feb-2018 08:26:44.175 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.5.28.019-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Windows 719-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 6.119-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: x8619-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: C:Program FilesJavajdk1.8.0_141jre19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.8.0_141-b1519-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: F:apache-tomcat-8.5.2819-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: F:apache-tomcat-8.5.2819-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=F:apache-tomcat-8.5.28conflogging.properties19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=204819-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=F:apache-tomcat-8.5.2819-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=F:apache-tomcat-8.5.2819-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=F:apache-tomcat-8.5.28temp19-Feb-2018 08:26:44.191 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library [1.2.16] using APR version [1.6.3].19-Feb-2018 08:26:44.206 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].19-Feb-2018 08:26:44.206 信息 [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]19-Feb-2018 08:26:44.830 信息 [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 1.0.2m 2 Nov 2017]19-Feb-2018 08:26:45.080 信息 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ['http-nio-8080']19-Feb-2018 08:26:45.517 信息 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read19-Feb-2018 08:26:45.581 信息 [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ['ajp-nio-8009']19-Feb-2018 08:26:45.597 信息 [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read19-Feb-2018 08:26:45.597 信息 [main] org.apache.catalina.startup.Catalina.load Initialization processed in 2422 ms19-Feb-2018 08:26:45.643 信息 [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]19-Feb-2018 08:26:45.643 信息 [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.2819-Feb-2018 08:26:45.675 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [F:apache-tomcat-8.5.28webappsdocs]19-Feb-2018 08:26:46.423 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [F:apache-tomcat-8.5.28webappsdocs] has finished in [748] ms19-Feb-2018 08:26:46.423 信息 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [F:apache-tomcat-8.5.28webappsexamples]19-Feb-2018 08:26:47.059 嚴重 [localhost-startStop-1] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/examples]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:752)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1141)at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1875)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at java.lang.Thread.run(Thread.java:748)Caused by: org.apache.catalina.LifecycleException: Failed to start component [Pipeline[StandardEngine[Catalina].StandardHost[localhost].StandardContext[/examples]]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5125)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 10 moreCaused by: org.apache.catalina.LifecycleException: Failed to start component [org.apache.catalina.authenticator.FormAuthenticator[/examples]]at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:167)at org.apache.catalina.core.StandardPipeline.startInternal(StandardPipeline.java:182)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 12 moreCaused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;at org.apache.catalina.authenticator.AuthenticatorBase.startInternal(AuthenticatorBase.java:1186)at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)... 14 more19-Feb-2018 08:26:47.075 嚴重 [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Error deploying web application directory [F:apache-tomcat-8.5.28webappsexamples] java.lang.IllegalStateException: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/examples]]at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:756)at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:728)at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:734)at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1141)at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1875)at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)at java.util.concurrent.FutureTask.run(FutureTask.java:266)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at java.lang.Thread.run(Thread.java:748)

我先試著刪除其他Tomcat版本，重新配置tomcat環境變量并重新部署Tomcat。發現并沒有解決問題，再次上網查閱，發現getContextPath()在servlet2.5特有。于是試著刪除原先jar包中的servlet-api.jar,然后重新部署項目。發現了第二個問題，log如下：

19-Feb-2018 09:59:51.534 嚴重 [http-nio-8080-exec-3] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/Happy] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.index_jsp] with root cause java.lang.ClassNotFoundException: org.apache.jsp.index_jspat java.net.URLClassLoader.findClass(URLClassLoader.java:381)at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:129)at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:60)at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:159)at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:171)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:380)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:748)19-Feb-2018 10:03:45.289 嚴重 [http-nio-8080-exec-1] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/Happy] threw exception [Unable to compile class for JSP] with root cause java.lang.ClassNotFoundException: com.sun.el.ExpressionFactoryImplat org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1291)at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)at javax.el.FactoryFinder.newInstance(FactoryFinder.java:83)at javax.el.FactoryFinder.find(FactoryFinder.java:193)at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:185)at javax.el.ExpressionFactory.newInstance(ExpressionFactory.java:156)at org.apache.jasper.compiler.PageInfo.<init>(PageInfo.java:80)at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:117)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:374)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:351)at org.apache.jasper.compiler.Compiler.compile(Compiler.java:335)at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:595)at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:368)at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:386)at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:330)at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:748)

再次查閱資料，發現是缺少jar包。因為jdk1.8的擴展jar包里沒有servlet相關api，故IDEA會導入失敗。

此時需要導入jar包，之前我是下載相關api

然后放到下圖目錄中

為了防止出現缺少jar包問題，建議直接去tomcat目錄下的lib中找到servlet-api.jar，直接復制到ext中。然后再重新部署一下tomcat，問題解決。

總結

到此這篇關于解決IDEA配置tomcat啟動報錯問題的文章就介紹到這了,更多相關IDEA配置tomcat啟動報錯內容請搜索好吧啦網以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持好吧啦網！