Comments on: Struts 2 Tiles Plugin Tutorial with Example in Eclipse

By: Prasad

Prasad — Sun, 05 Feb 2012 13:22:40 +0000

I am getting a strange kind of error. If I include this listener class,
org.apache.struts2.tiles.StrutsTilesListener
be whatever it might be, I get a HTTP status 404 error. I wonder how people are able to get the output? I found this very similar type of discussion in other popular website, but I didn’t find any solution.

Please can anyone clarify it.
Then, after I removed that listener class, I get the welcome screen. But the moment, I give admin and admin123, I am getting a NullPointerException. The log is not anywhere useful I feel because it is not pointing to any part of the program. What I feel is that it is not getting mapped from struts.xml to tiles.xml file.

Please reply as soon as possible.

By: Viral Patel

Viral Patel — Mon, 30 Jan 2012 11:51:10 +0000

@SatyamReddy: The ClassNotFoundException occurs if required Struts jar files are not present in your project’s classpath. Please see if all required jar files are in your classpath.

By: SatyamReddy

SatyamReddy — Mon, 30 Jan 2012 10:53:21 +0000

Hi,

when i am trying above tiles example, i am getting error like below

SEVERE: Error configuring application listener of class org.apache.struts2.tiles.StrutsTilesListener
java.lang.ClassNotFoundException: org.apache.struts2.tiles.StrutsTilesListener
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
SEVERE: Context [/HelloWorld] startup failed due to previous errors

Please help me.
advance thanks.

By: Everett Zhou

Everett Zhou — Tue, 27 Dec 2011 15:44:19 +0000

Ok, I struggled a few hours to figure out why I got different errors. It looks like you have to have the exact same version of all those jars even for ongl-2.6.11.jar (ongl-3.0.jar does not work).

By: José Manuel

José Manuel — Sat, 10 Dec 2011 11:14:54 +0000

Hello Viral,

Thank you for your fast reply. Well, i had tiles-core-2.2.2.jar instead tiles-core-2.0.6.jar, because with this last one, i had this other error:

Exception starting filter struts2
java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor

I’m really lost, because even if the application works putting manually the addresses, I am not able to start properly tomcat once and for all. Still taking errors since I started to use tiles on my project, and I cannot fix the problem. sigh

Thank you for your help.

By: Viral Patel

Viral Patel — Fri, 09 Dec 2011 12:35:07 +0000

Hi José, It seems that tomcat couldn't find tiles-core-2.0.6.jar jar file in your web projects WEB-INF/lib directory. Download this jar file from here and put it in your project's classpath.

By: José Manuel

José Manuel — Fri, 09 Dec 2011 12:00:38 +0000

Heya,

Thank you again for your great tutorial. Everything is going fine, but I ve some errors while starting Tomcat Server:

java.lang.NoClassDefFoundError: org/apache/tiles/web/startup/TilesListener

How it comes that. My web.xml and the others .xml config files seems be ok. Like that, Tomcat is unable to start /StrutsHelloWorld context, due to previous errors, and I need to put addresses manually like that.

Can you help me, please?

Thanks.

By: José Manuel

José Manuel — Thu, 08 Dec 2011 18:33:52 +0000

Heya folks,

First of all, thank you for you excellent tutorial. Thank to you, I have saved tons of time and troubles.

I have just a question, maybe because im a newbie with all this stuff and I am not good at it, yet. Well: why should I put in the adress: http://……/customer in order to see the BaseLayout.jsp page? At the start, i tried to acces to this .jsp directly, and then I see that i needed to put just “customer”. By acceding to the BaseLayout.jsp directly I got some errors (404).

I have also “SEVERE: Error executing tag: Attribute ‘header’ not found.” at the start of Apache Tomcat. Maybe some suggestion with that?

Thank you.

By: GV

GV — Wed, 02 Nov 2011 09:05:28 +0000

While running this application, got below exception
exception
javax.servlet.ServletException: org.apache.tiles.impl.CannotRenderException: ServletException including path ‘/BaseLayout.jsp’.
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:515)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:422)

To resolve this we have to update tiles jar files to version 2.2.0

By: Mark

Mark — Tue, 16 Aug 2011 09:17:51 +0000

It turned out the error was a typo on my part in the struts.xml file. *blush*

The config-browser, available with struts2, helped me a lot when viewing and resolving the namespace issues.

http://devtalks.blogspot.com/2009/10/struts2-config-browser-plugin.html