Gravity servlet is not unique Deployment error

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Jan 25, 2011, 12:30:49 AM1/25/11

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hi.... i am trying to deploy my application on tomcat 6 with grails
1.3.5 flex 4.1 Granite DS 2.2 GA i am using plugin gdsflex 0.8.4 now
here is the problem..

when i run grails war command it generates the war file properly but
when i paste it in tomcats webapps directory and run the application
it givs me Gravity servlet not unique and invoker exception eroor....
no where in my project i am using data push so no need for gravity ...

now am not understanding whatz the problem here is complete error
log...

Jan 25, 2011 10:51:24 AM org.apache.catalina.core.AprLifecycleListener
init
INFO: The Apache Tomcat Native library which allows optimal
performance in production environments was not found on the
java.library.path: C:\Program Files\Apache Software Foundation\Tomcat
6.0\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:
\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files
\Java\jdk1.6.0\bin;C:\Program Files\Adobe\Adobe Flash Builder 4\sdks
\4.0.0\bin;C:\Program Files\grails-1.3.5\bin;C:\Program Files\Apache
Software Foundation\Tomcat 6.0\bin;
Jan 25, 2011 10:51:24 AM org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
Jan 25, 2011 10:51:24 AM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 328 ms
Jan 25, 2011 10:51:24 AM org.apache.catalina.core.StandardService
start
INFO: Starting service Catalina
Jan 25, 2011 10:51:24 AM org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.7
Jan 25, 2011 10:51:24 AM org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
Jan 25, 2011 10:51:24 AM org.apache.catalina.startup.HostConfig
deployWAR
INFO: Deploying web application archive commerce.war
Jan 25, 2011 10:51:36 AM org.apache.tomcat.util.digester.Digester
endElement
SEVERE: End event threw exception
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:
899)
at org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:
193)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:
1058)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDriver.next(Unknown Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown
Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl
$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1562)
at
org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:
369)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:
1060)
at
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:
261)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:
120)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:
4238)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:
525)
at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:
920)
at
org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:
883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:
492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
311)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:
120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:
443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:
451)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:
710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.IllegalArgumentException: addChild: Child name
'GravityServlet' is not unique
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
750)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
740)
at
org.apache.catalina.core.StandardContext.addChild(StandardContext.java:
2031)
... 45 more
Jan 25, 2011 10:51:36 AM org.apache.catalina.startup.ContextConfig
applicationWebConfig
SEVERE: Parse error in application web.xml file at jndi:/localhost/WEB-
INF/web.xml
java.lang.IllegalArgumentException: addChild: Child name
'GravityServlet' is not unique
at
org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:
2726)
at
org.apache.tomcat.util.digester.Digester.createSAXException(Digester.java:
2752)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:
1061)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl
$FragmentContentDriver.next(Unknown Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown
Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl
$JAXPSAXParser.parse(Unknown Source)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1562)
at
org.apache.catalina.startup.ContextConfig.applicationWebConfig(ContextConfig.java:
369)
at org.apache.catalina.startup.ContextConfig.start(ContextConfig.java:
1060)
at
org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:
261)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:
120)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:
4238)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
760)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
740)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:
525)
at
org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:
920)
at
org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:
883)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:
492)
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1138)
at
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:
311)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:
120)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1022)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:
1014)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:
443)
at
org.apache.catalina.core.StandardService.start(StandardService.java:
451)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:
710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:552)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.IllegalArgumentException: addChild: Child name
'GravityServlet' is not unique
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:
750)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:
740)
at
org.apache.catalina.core.StandardContext.addChild(StandardContext.java:
2031)
at sun.reflect.GeneratedMethodAccessor114.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at
org.apache.tomcat.util.IntrospectionUtils.callMethod1(IntrospectionUtils.java:
899)
at org.apache.tomcat.util.digester.SetNextRule.end(SetNextRule.java:
193)
at org.apache.tomcat.util.digester.Rule.end(Rule.java:229)
at org.apache.tomcat.util.digester.Digester.endElement(Digester.java:
1058)
... 38 more
Jan 25, 2011 10:51:36 AM org.apache.catalina.startup.ContextConfig
applicationWebConfig
SEVERE: Occurred at line 76 column 15
Jan 25, 2011 10:51:36 AM org.apache.catalina.startup.ContextConfig
start
SEVERE: Marking this application unavailable due to previous error(s)
Jan 25, 2011 10:51:36 AM org.apache.catalina.core.StandardContext
start
SEVERE: Error getConfigured
Jan 25, 2011 10:51:36 AM org.apache.catalina.core.StandardContext
start
SEVERE: Context [] startup failed due to previous errors
Jan 25, 2011 10:51:36 AM org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
Jan 25, 2011 10:51:36 AM org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
Jan 25, 2011 10:51:36 AM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/31 config=null
Jan 25, 2011 10:51:36 AM org.apache.catalina.startup.Catalina start
INFO: Server startup in 11875 ms

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
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/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>/@grails.project.key@</display-name>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

<context-param>
<param-name>webAppRootKey</param-name>
<param-value>@grails.project.key@</param-value>
</context-param>

<filter>
<filter-name>sitemesh</filter-name>
<filter-
class>org.codehaus.groovy.grails.web.sitemesh.GrailsPageFilter</filter-
class>
</filter>

<filter>
<filter-name>charEncodingFilter</filter-name>
<filter-
class>org.springframework.web.filter.DelegatingFilterProxy</filter-
class>
<init-param>
<param-name>targetBeanName</param-name>
<param-value>characterEncodingFilter</param-value>
</init-param>
<init-param>
<param-name>targetFilterLifecycle</param-name>
<param-value>true</param-value>
</init-param>
</filter>

<filter-mapping>
<filter-name>charEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<listener>
<listener-
class>org.codehaus.groovy.grails.web.util.Log4jConfigListener</
listener-class>
</listener>

<listener>
<listener-
class>org.codehaus.groovy.grails.web.context.GrailsContextLoaderListener</
listener-class>
</listener>

<servlet>
<servlet-name>grails</servlet-name>
<servlet-
class>org.codehaus.groovy.grails.web.servlet.GrailsDispatcherServlet</
servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>

<servlet>
<servlet-name>gsp</servlet-name>
<servlet-
class>org.codehaus.groovy.grails.web.pages.GroovyPagesServlet</servlet-
class>
</servlet>

<servlet-mapping>
<servlet-name>gsp</servlet-name>
<url-pattern>*.gsp</url-pattern>
</servlet-mapping>

<welcome-file-list>

<welcome-file>commerce.html</welcome-file>
<welcome-file>commerce.gsp</welcome-file>
</welcome-file-list>

<jsp-config>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/tld/c.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/fmt</taglib-uri>
<taglib-location>/WEB-INF/tld/fmt.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://www.springframework.org/tags</taglib-
uri>
<taglib-location>/WEB-INF/tld/spring.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://grails.codehaus.org/tags</taglib-uri>
<taglib-location>/WEB-INF/tld/grails.tld</taglib-location>
</taglib>
</jsp-config>