JSR356 WebSocket (JavaJava1.0)支持在WebSocket 6上运行时不可用

Question

我正尝试在Tomcat7上的Eclipse Kepler (4.3)上运行我的第一个struts "Hello World“程序。JRE是jrockit-jre1.6.0_45-R28.2.7。我得到了404错误。这是控制台上的错误

 2014/11/12 18:46:38 org.apache.catalina.core.StandardService startInternal
    情報: サービス Catalina を起動します
    2014/11/12 18:46:38 org.apache.catalina.core.StandardEngine startInternal
    情報: Starting Servlet Engine: Apache Tomcat/7.0.53
    2014/11/12 18:46:38 org.apache.tomcat.websocket.server.WsSci onStartup
    情報: JSR 356 WebSocket (Java WebSocket 1.0) support is not available when running on Java 6. To suppress this message, run Tomcat on Java 7, remove the WebSocket JARs from $CATALINA_HOME/lib or add the WebSocketJARs to the tomcat.util.scan.DefaultJarScanner.jarsToSkip property in $CATALINA_BASE/conf/catalina.properties. Note that the deprecated Tomcat 7 WebSocket API will be available. 
    2014/11/12 18:46:39 com.opensymphony.xwork2.config.providers.XmlConfigurationProvider info
    情報: Parsing configuration file [struts-default.xml]
    2014/11/12 18:46:39 org.apache.catalina.core.StandardContext filterStart
    致命的: フィルタ struts2 の起動中の例外です
    java.lang.NoClassDefFoundError: org/apache/commons/lang3/StringUtils
        at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:211)
        at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:102)
        at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:234)
        at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
        at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445)
        at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:489)
        at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:193)
        at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:279)
        at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:260)
        at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:105)
        at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4809)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5485)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
        at java.util.concurrent.FutureTask.run(FutureTask.java:138)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
        at java.lang.Thread.run(Thread.java:662)
    2014/11/12 18:46:39 org.apache.catalina.core.StandardContext startInternal
    致命的: Error filterStart
    2014/11/12 18:46:39 org.apache.catalina.core.StandardContext startInternal
    致命的: 以前のエラーのためにコンテキストの起動が失敗しました [/StrutsHelloWord]
    2014/11/12 18:46:39 org.apache.coyote.AbstractProtocol start
    情報: Starting ProtocolHandler ["http-bio-8080"]
    2014/11/12 18:46:39 org.apache.coyote.AbstractProtocol start
    情報: Starting ProtocolHandler ["ajp-bio-8009"]
    2014/11/12 18:46:39 org.apache.catalina.startup.Catalina start
    情報: Server startup in 1738 ms

如果你能告诉我这个错误的原因，我将不胜感激。

Answer 1

尽管堆栈跟踪中有一堆平假名，但幸运的是，仍然可以识别错误和异常。这一点：

java.lang.NoClassDefFoundError: org/apache/commons/lang3/StringUtils

是因为类路径中缺少commons-lang3-3.x.jar而引发的。

Download it，把它包含在你的包中，享受吧。

相反，这就是

JAR:在Java6上运行时，JSR356 WebSocket (JavaTomcat1.0)支持不可用。要抑制此消息，请在Java7上运行WebSocket，从$CATALINA_HOME/ WebSocket中删除WebSocketJAR，或者将WebSocketJAR添加到$CATALINA_BASE/conf/catalina.properties中的tomcat.util.scan.DefaultJarScanner.jarsToSkip属性中。请注意，已弃用的Tomcat7 WebSocket API将可用。

不言而喻:使用Java7是因为JSR356 seems to target that。