ho cercato di aggiungere questo servletjava.lang.IllegalArgumentException: I servlet di nome [X] e [Y] sono entrambi mappati al url-pattern [/ url] che non è permesso
package com.classmgt.servlet;
@WebServlet("/ControllerServlet")
public class ControllerServlet extends HttpServlet {}
alla mia progetto Eclipse, modificando il web.xml
come di seguito
<servlet>
<description>Servlet to print out Hello World!</description>
<display-name>ControllerServlet</display-name>
<servlet-name>ControllerServlet</servlet-name>
<servlet-class>com.classmgt.servlet.ControllerServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ControllerServlet</servlet-name>
<url-pattern>/ControllerServlet</url-pattern>
</servlet-mapping>
Tuttavia, ho ottenuto la seguente eccezione:
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ClassManagementSystem]]
at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
at java.util.concurrent.FutureTask.get(Unknown Source)
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ClassManagementSystem]]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
... 7 more
Caused by: java.lang.IllegalArgumentException: The servlets named [ControllerServlet] and [com.classmgt.servlet.ControllerServlet] are both mapped to the url-pattern [/ControllerServlet] which is not permitted
at org.apache.catalina.deploy.WebXml.addServletMapping(WebXml.java:335)
at org.apache.catalina.startup.ContextConfig.processAnnotationWebServlet(ContextConfig.java:2457)
at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2139)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2100)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2093)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2093)
at org.apache.catalina.startup.ContextConfig.processAnnotationsFile(ContextConfig.java:2093)
at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1300)
at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:369)
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:5269)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
... 7 more
Ho provato ad aggiungere metadata-complete="true"
a web.xml
, ma non riconosce più il servlet.
Sembra che ci sono due servlet e la stessa url-pattern, ma secondo il vostro web.xml c'è solo un , forse wront web.xml è in esecuzione? Prova a ricompilare e riavviare? –
Hai mescolato la configurazione basata su annotazioni e web.xml? –
all'interno del mio ControllerServlet ho messo questo: '@WebServlet ("/ControllerServlet ")' e nella mia forma questo è quello che ho messo: '