Perl

http://ashwin.wordpress.com/2012/06/07/how-to-install-perl-modules-on-windows-7-without-using-perl-package-managerppm/


D:\Akshay\Technical\Perl\sample program>perl XLS2XML.pl
Can't locate OLE/Storage_Lite.pm in @INC (you may need to install the OLE::Storage_Lite module) (@INC contains: D:/Perl64/site/lib D:/Perl64/lib .) at D:/Perl64
/site/lib/Spreadsheet/ParseExcel.pm line 18.
BEGIN failed--compilation aborted at D:/Perl64/site/lib/Spreadsheet/ParseExcel.pm line 18.
Compilation failed in require at XLS2XML.pl line 3.
BEGIN failed--compilation aborted at XLS2XML.pl line 3.


D:\Akshay\Technical\Perl\perl modules\Digest-Perl-MD5-1.9\Digest-Perl-MD5-1.9>pp
m query *Excel*
┌────────────────────────┬─────────┬──────────┬──────┐
│ name │ version │ abstract │ area │
├────────────────────────┼─────────┼──────────┼──────┤
│ Spreadsheet-ParseExcel │ 0.59 │ │ site │
│ Spreadsheet-WriteExcel │ 2.40 │ │ site │
└────────────────────────┴─────────┴──────────┴──────┘
(2 packages installed matching '*Excel*')

Tomcat

Issue 1 : Unable to deploy WAR

FAIL - Application at context path /StrutsOGNL could not be started

catalina.log
============
31 Jan, 2014 12:27:48 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Error filterStart
31 Jan, 2014 12:27:48 PM org.apache.catalina.core.StandardContext startInternal
SEVERE: Context [/StrutsOGNL] startup failed due to previous errors

localhost.log
=============

31 Jan, 2014 12:27:48 PM org.apache.catalina.core.StandardContext filterStart
SEVERE: Exception starting filter struts2
java.lang.UnsupportedClassVersionError: com/tutorialspoint/struts2/HelloWorldAction : Unsupported major.minor version 51.0 (unable to load class com.tutorialspoint.struts2.HelloWorldAction)
at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2922)
at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1174)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1669)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
at com.opensymphony.xwork2.util.ClassLoaderUtil.loadClass(ClassLoaderUtil.java:144)
at com.opensymphony.xwork2.ObjectFactory.getClassInstance(ObjectFactory.java:128)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.verifyAction(XmlConfigurationProvider.java:472)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addAction(XmlConfigurationProvider.java:426)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.addPackage(XmlConfigurationProvider.java:552)
at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadPackages(XmlConfigurationProvider.java:292)
at org.apache.struts2.config.StrutsXmlConfigurationProvider.loadPackages(StrutsXmlConfigurationProvider.java:112)
at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:258)
at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:67)
at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:445)
at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:489)
at org.apache.struts2.dispatcher.FilterDispatcher.init(FilterDispatcher.java:193)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:281)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:262)
at org.apache.catalina.core.ApplicationFilterConfig.(ApplicationFilterConfig.java:107)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4775)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5452)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:633)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:983)
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1660)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
31 Jan, 2014 12:27:53 PM org.apache.catalina.core.ApplicationContext log

Struts

This page will have only Struts debugging techniques:
=====================================================

Issue 1 :
=========

Unable to load configuration. - bean - jar:file:/D:/Akshay/Technical/Tomcat/apache-tomcat-7.0.47-windows-x64/apache-tomcat-7.0.47/webapps/HelloWorldStruts/WEB-INF/lib/struts2-core-2.3.16.jar!/struts-default.xml:40:72

==> Don't duplicates struts libraries in WebServer, ensure no parsing issue in struts.xml file

Tips 1
======
Always delete deployed WAR folder


Tips 2
======
Use below filter class for warning in Tomcat console

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter



***********************************************************************
* WARNING!!! *
* *
* >>> FilterDispatcher <<< is deprecated! Please use the new filters! * * * * This can be a source of unpredictable problems! * * * * Please refer to the docs for more details! * * http://struts.apache.org/2.x/docs/webxml.html * * * ***********************************************************************