Thanks Randy for the feedback.
I looked deeply into it and this is what I found....
The ActionServlet's init() method is called twice. (I don't know why, I
guess this is what I'm trying to find out...)
There is a series of method calls in the ActionServlet.init() method...
initModuleMessageResources(moduleConfig);
initModulePlugIns(moduleConfig);
initModuleFormBeans(moduleConfig);
initModuleForwards(moduleConfig);
initModuleExceptionConfigs(moduleConfig);
initModuleActions(moduleConfig);
Most of these seem to have a check whether or not the module has already
been processed. The initModulePlugins method does not seem to have this
check.
Line 871
initModulePlugins();
plugIns[i].init(this, config);
No previous check if processed.
Where as for form-beans, in initModulePlugIns method, a
processFormBeanExtension method is called, which checks if it has already
been processed.
Line 948-957
if (!beanConfig.isExtensionProcessed()) {
if (log.isDebugEnabled()) {
log.debug("Processing extensions for '"
+ beanConfig.getName() + "'");
}
beanConfig = processFormBeanConfigClass(beanConfig, moduleConfig);
beanConfig.processExtends(moduleConfig);
}
So it looks as though, the plugin modules, specifically, are not being
checked if they have already been processed.
I'm not sure why, but probably there is some reason.
However, I still do not know why ActionServlet.init() is called twice.
Edward Song
-----Original Message-----
From: Randy Burgess [mailto:[EMAIL PROTECTED]
Sent: Thursday, January 03, 2008 11:56 AM
To: Struts Users Mailing List
Subject: Re: Struts 1.3.8 Plugins initializing twice
This is from a Struts 1.2.8 app of mine.
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<init-param>
<param-name>debug</param-name>
<param-value>3</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>3</param-value>
</init-param>
<load-on-startup>0</load-on-startup>
</servlet>
You don¹t need the debug params but in this case it might not hurt. I cannot
remember why but I believe that load on startup should always be 0 for
Struts 1.
Regards,
Randy Burgess
Sr. Web Applications Developer
Nuvox Communications
From: Edward Song <[EMAIL PROTECTED]>
Reply-To: Struts Users Mailing List <user@struts.apache.org>
Date: Thu, 3 Jan 2008 10:56:40 -0500
To: <user@struts.apache.org>
Subject: Struts 1.3.8 Plugins initializing twice
Hi all,
Struts 1.3.8
I have a single struts module and it seems as though my plugins are getting
loaded twice.
This goes for the validator, tiles, and my own written plugins.
I¹ve found out that if in the web.xml I do not specify a value for
<load-on-startup> then the ActionServlet is not initialized until it is
requested, and when it is requested it is initialized once.
Web.xml
<servlet>
<description>Struts Action Servlet</description>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/config/struts/struts-config.xml</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>
However, if I add a value for <load-on-startup> it seems as though struts is
initialized twice as I can see that the validator and tiles plugins are
loaded twice. The struts manual says that the framework should be loaded on
startup to ensure correct operation.
Ed
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