Nie mogę uruchomić Tomcat, gdy używam web.xml jako plik konfiguracyjny dla serwletów w aplikacji, to zawartość pliku:Dlaczego serwer Tomcat nie działa z plikiem web.xml jako konfiguracja serwletu użyta w aplikacji Vaadin 7?
<?xml version="1.0" encoding="UTF-8"?>
<web-app
id="WebApp_ID" version="3.0"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<servlet>
<servlet-name>AppLifeServlet</servlet-name>
<servlet-class>
com.example.application_lifecycle_chapter_4_7.ApplicatationLifecycleUI.Servlet
</servlet-class>
<init-param>
<param-name>UI</param-name>
<param-value>com.example.application_lifecycle_chapter_4_7.ApplicationLifecycleUI</param-value>
</init-param>
<async-supported>true</async-supported>
</servlet>
<servlet>
<servlet-name>MyPushyServlet</servlet-name>
<servlet-class>
com.example.application_lifecycle_chapter_4_7.MyPushyUI.Servlet
</servlet-class>
<init-param>
<param-name>UI</param-name>
<param-value>com.example.application_lifecycle_chapter_4_7.MyPushyUI</param-value>
</init-param>
<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>AppLifeServlet</servlet-name>
<url-pattern>/AppLife/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>AppLifeServlet</servlet-name>
<url-pattern>/VAADIN/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>MyPushyServlet</servlet-name>
<url-pattern>/MyPushyUI/*</url-pattern>
</servlet-mapping>
</web-app>
Dlaczego nie jest to działa? Tomcat nawet nie uruchamia a zamiast zwraca wyjątek:
SEVERE: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8009"]
java.lang.NullPointerException
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:307)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:482)
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:795)
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:531)
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:850)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.startup.Catalina.start(Catalina.java:629)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Gdybym wyłączyć web.xml i używam apletu 3.0 API adnotacje wszystko działa ...
Jaki jest problem z plikiem web.xml ?
EDIT: Oto pełna moc wyjątek gdy Tomcat próbuje uruchomić:
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Application_Lifecycle_Chapter_4.7]]
at java.util.concurrent.FutureTask.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:917)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:868)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Application_Lifecycle_Chapter_4.7]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 6 more
Caused by: java.lang.IllegalArgumentException: The servlets named [AppLifeServlet] and [com.example.application_lifecycle_chapter_4_7.ApplicationLifecycleUI$Servlet] are both mapped to the url-pattern [/AppLife/*] which is not permitted
at org.apache.tomcat.util.descriptor.web.WebXml.addServletMapping(WebXml.java:308)
at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2325)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2007)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1901)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1896)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1896)
at org.apache.catalina.startup.ContextConfig.processAnnotationsWebResource(ContextConfig.java:1896)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1139)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:771)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:305)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5095)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
Dec 07, 2014 7:49:30 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.report(FutureTask.java:122)
at java.util.concurrent.FutureTask.get(FutureTask.java:192)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:917)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:439)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:760)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.startup.Catalina.start(Catalina.java:625)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
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$StartChild.call(ContainerBase.java:1409)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.catalina.LifecycleException: A child container failed during start
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:925)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:868)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 6 more
Dec 07, 2014 7:49:30 PM org.apache.catalina.startup.Catalina start
SEVERE: The required Server component failed to start so Tomcat is unable to start.
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.startup.Catalina.start(Catalina.java:625)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
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:760)
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:439)
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:925)
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 11 more
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["http-nio-8080"]
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol pause
INFO: Pausing ProtocolHandler ["ajp-nio-8009"]
Dec 07, 2014 7:49:30 PM org.apache.catalina.core.StandardService stopInternal
INFO: Stopping service Catalina
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["http-nio-8080"]
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol destroy
SEVERE: Failed to destroy end point associated with ProtocolHandler ["http-nio-8080"]
java.lang.NullPointerException
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:307)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:482)
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:795)
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:531)
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:850)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.startup.Catalina.start(Catalina.java:629)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol destroy
INFO: Destroying ProtocolHandler ["ajp-nio-8009"]
Dec 07, 2014 7:49:30 PM org.apache.coyote.AbstractProtocol destroy
SEVERE: Failed to destroy end point associated with ProtocolHandler ["ajp-nio-8009"]
java.lang.NullPointerException
at org.apache.tomcat.util.net.NioEndpoint.releaseCaches(NioEndpoint.java:307)
at org.apache.tomcat.util.net.NioEndpoint.unbind(NioEndpoint.java:482)
at org.apache.tomcat.util.net.AbstractEndpoint.destroy(AbstractEndpoint.java:795)
at org.apache.coyote.AbstractProtocol.destroy(AbstractProtocol.java:531)
at org.apache.catalina.connector.Connector.destroyInternal(Connector.java:1023)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardService.destroyInternal(StandardService.java:588)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.core.StandardServer.destroyInternal(StandardServer.java:850)
at org.apache.catalina.util.LifecycleBase.destroy(LifecycleBase.java:305)
at org.apache.catalina.startup.Catalina.start(Catalina.java:629)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:351)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:485)
ZDECYDOWANE: To jest kluczowa linia:
Caused by: java.lang.IllegalArgumentException: The servlets named [AppLifeServlet] and
[com.example.application_lifecycle_chapter_4_7.ApplicationLifecycleUI$Servlet] are both
mapped to the url-pattern [/AppLife/*] which is not permitted
Z Księgi Vaadin:
Możesz używać zarówno pliku web.xml, jak i WebServlet w tej samej aplikacji. Ustawienia w pliku web.xml zastępują ustawienia podane w adnotacjach.
To nie jest prawda! W moim przypadku błąd był spowodowany tą frazą: Miałem adnotację @WebServlet
w moim ApplicationLifecycleUI$Servlet
wraz z odwzorowaniem serwletu wewnątrz pliku web.xml.
Dwie konfiguracje nie mogą współistnieć razem, więc musisz zdecydować, czy chcesz użyć adnotacji web.xml czy @WebServlet
do mapowania adresów URL, lub otrzymasz ten błąd, gdy próbujesz uruchomić Tomcat.
Czy masz inny wyjątek w dzienniku przed tym? ten wyjątek jest związany z niszczeniem procedury obsługi protokołu, która ma miejsce po tym, jak aplikacja się nie uruchomiła –
Tak, sprawdź moją edycję! Sprawdziłem konsolę w Eclipse i odkryłem kilka innych wyjątków wyrzuconych przed tym, który opublikowałem. – tonix
Znalazłem problem, Adnotacje i web.xml nie mogą żyć razem, Book of Vaadin wprowadza w błąd, ponieważ mówi, że mogą współistnieć razem i że web.xml zastępuje konfigurację zdefiniowaną w adnotacjach. W każdym razie dziękuję za poinformowanie mnie, że lepiej zajrzeć do wyjątków konsoli! – tonix