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<param-value> tag in web.xml

Amirtharaj Chinnaraj
Ranch Hand

Joined: Sep 28, 2006
Posts: 236


Hi All,

Iam working in a maintenance project. Their i found the following servlet tag in the web.xml, In the servlet tag is mentioned as below



here iam not able to understand what the <param-value>.*[\\/]struts-config.*.xml$</param-value>
</init-param>
represents. is it a regular Expression, if so then any please explain how this expression works

so to understand how it behaves i tried to build a small web-application using Tomcat 7 , iam getting FIleNotFoundException
Jeanne Boyarsky
author & internet detective
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Joined: May 26, 2003
Posts: 31079
    
163

com.struts.action.TestActionServlet looks like a servlet someone at your company wrote. Check the source code for what it does. It's not a good package name for what it is worth unless you work for a company called Struts.

You are correct that the value is a regular expression. Diagramming it, we have:
.* - zero or more of any characters
[\\/] - slash or backslash
struts-config.*.xml - wildcard for files beginning with struts config that are xml
$ - end of string

In other words, it finds struts config files with anything extra in the name like struts-config.qa.xml


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