Tomcat 7（サーブレットプロジェクトが含まれている場合）が45秒以内に起動していない...タイムアウトを増やしても解決しない

Question

Webアプリケーション（サーブレットを含む）を実行しようとすると、Tomcat 7が起動しません。サーブレットを追加してTomcatに追加しようとすると、サーバーが起動せず、「Tomcat 7が45秒で起動しなかった」というエラーが表示されます。私は私がこの問題を解決するのに役立ちhappened.Pleaseタイムアウト何も増加し

。コンソールは言う：あなたはGoogleだけに例外の原因のエラーメッセージをコピーした場合

"23 Jan, 2012 1:43:44 PM org.apache.catalina.core.AprLifecycleListener init 
INFO: The APR based Apache Tomcat Native library which allows optimal performance in     production environments was not found on the java.library.path: C:\Program Files (x86)\Java\jdk1.7.0\bin;.;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:/Program Files/Java/jdk1.6.0_23/jre/bin/server;C:/Program Files/Java/jdk1.6.0_23/jre/bin;C:/Program Files/Java/jdk1.6.0_23/jre/lib/amd64;C:\Program Files (x86)\Java\jdk1.7.0\jre\bin;F:\SOFTWARES\Eclipse Indigo\eclipse; 
23 Jan, 2012 1:43:44 PM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property  'source' to 'org.eclipse.jst.jee.server:Basic' did not find a matching property. 
23 Jan, 2012 1:43:44 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-80"] 
23 Jan, 2012 1:43:44 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-bio-9999"] 
23 Jan, 2012 1:43:44 PM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 717 ms 
23 Jan, 2012 1:43:44 PM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
23 Jan, 2012 1:43:44 PM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.23 
23 Jan, 2012 1:43:45 PM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component  [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Basic]] 
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252) 
at java.util.concurrent.FutureTask.get(FutureTask.java:111) 
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1100) 
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1525) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1515) 
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) 
at java.util.concurrent.FutureTask.run(FutureTask.java:166) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
at java.lang.Thread.run(Thread.java:674) 
    Caused by: org.apache.catalina.LifecycleException: Failed to start component  [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Basic]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    ... 7 more 
    Caused by: java.lang.UnsupportedClassVersionError: Simple : Unsupported major.minor version 51.0 (unable to load class Simple) 
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2827) 
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1160) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1655) 
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1533) 
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:108) 
at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:58) 
at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:338) 
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:831) 
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:302) 
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) 
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) 
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5148) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 7 more 
23 Jan, 2012 1:43:45 PM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to  start component [StandardEngine[Catalina].StandardHost[localhost]] 
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:252) 
at java.util.concurrent.FutureTask.get(FutureTask.java:111) 
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1100) 
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:624) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:623) 
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1525) 
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1515) 
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) 
at java.util.concurrent.FutureTask.run(FutureTask.java:166) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
at java.lang.Thread.run(Thread.java:674) 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1108) 
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 7 more 
23 Jan, 2012 1:43:45 PM org.apache.catalina.startup.Catalina start 
SEVERE: Catalina.start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8000]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.startup.Catalina.start(Catalina.java:624) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:623) 
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:727) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 7 more 
Caused by: org.apache.catalina.LifecycleException: Failed to start component   [StandardEngine[Catalina]] 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 9 more 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1108) 
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:291) 
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
... 11 more 
23 Jan, 2012 1:43:45 PM org.apache.catalina.startup.Catalina start 
INFO: Server startup in 313 ms " ' 

Answer 1

、あなたが見つけただろう問題。 "サポートされていないmajor.minorバージョン51.0"は、JDK7を使用してクラスをコンパイルしましたが、以前のバージョンのJDKまたはJREを使用してデプロイして実行することを意味します。 JDK7でTomcatを起動するか、クラスをコンパイルするために使用しているJDKを変更してください。

サイドノート：あなたのクラスはSimpleという名前で、デフォルトのパッケージに含まれているようです。これは、あらゆる種類の問題を引き起こす悪い習慣です。クラスを常にパッケージに入れてください。

Answer 2

Eclipseのサーバーの下のパッケージエクスプローラーのファイルservers.xmlの構成を確認します。 このファイルをデザインモードで開くと、さまざまなContexts-configsが表示されます。 あなたが始めるには、エントリが必要です。このコンテキスト項目を確認してください：docBase、パス、およびソースはプロジェクトを参照する必要があります。