Index file not loading in Google App Engine using struts2

Question

I am getting the below error when I try to access my struts2 tiles application (in google app engine)

There is no Action mapped for namespace [/] and action name [] associated with context path []. - [unknown location]

Below is the stack trace

Stacktraces

There is no Action mapped for namespace [/] and action name [] associated with context path []. - [unknown location]
    com.opensymphony.xwork2.DefaultActionProxy.prepare(DefaultActionProxy.java:185)
    org.apache.struts2.impl.StrutsActionProxy.prepare(StrutsActionProxy.java:63)
    org.apache.struts2.impl.StrutsActionProxyFactory.createActionProxy(StrutsActionProxyFactory.java:39)
    com.opensymphony.xwork2.DefaultActionProxyFactory.createActionProxy(DefaultActionProxyFactory.java:58)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:500)
    org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:35)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:60)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:122)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:78)
    org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:369)
    org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    org.mortbay.jetty.Server.handle(Server.java:326)
    org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
    org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
    org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:547)
    org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
    org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)

My web.xml file content is:

<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">

<filter>
    <filter-name>struts2</filter-name>
    <filter-class>
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    </filter-class>
</filter>

<filter-mapping>
    <filter-name>struts2</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<listener>
    <listener-class>com.sbipensioner.listener.Struts2ListenerOnGAE</listener-class>
</listener>

<listener>
    <listener-class>org.apache.struts2.tiles.StrutsTilesListener</listener-class>
</listener>

<context-param>
    <param-name>tilesDefinitions</param-name>
    <param-value>/WEB-INF/tiles.xml</param-value>
</context-param>


<welcome-file-list>
    <welcome-file>index.html</welcome-file>
</welcome-file-list>

I dont know why its not loading index.html by default.

Please advise.

Regards, Mugil

score 0 · Answer 1 · answered Jun 17 '14 at 10:29

Add the below blank action to you struts.xml file in "/" package namespace and it will show the index.html when you will only try to access your url (like appid.app.com) and it will not show the error. Normally it will add a blank action and app engine will redirect the blank action to your welcome file.

    <action name="" class="com.candi.actions.Dashboard" method="noAction">
        <result name="success">index.jsp</result>
    </action>

let explain further. just add blank action by providing blank "" as your action name and redirect your result to index.php which will solve your problem.

Index file not loading in Google App Engine using struts2

1 Answers1