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From Iván Rodríguez <i...@interd4u.com>
Subject Re: How to read a parameter in web.xml from Action class
Date Thu, 20 May 2004 10:02:23 GMT
Why don t you use JNDI ?

----- Original Message ----- 
From: "Frank Burns" <frankburns@the-hub.demon.co.uk>
To: "Struts Users Mailing List" <user@struts.apache.org>
Sent: Thursday, May 20, 2004 11:47 AM
Subject: Re: How to read a parameter in web.xml from Action class


> Excellent. Thank you Ashutosh.
>
> ----- Original Message ----- 
> From: "Ashutosh Satyam" <ashutosh.satyam@alopa.com>
> To: "Struts Users Mailing List" <user@struts.apache.org>
> Sent: Thursday, May 20, 2004 6:40 AM
> Subject: RE: How to read a parameter in web.xml from Action class
>
>
> One more addendum to this.
>  In case you want this intialization parameter to be
> available to all the servlets in your web application, then
> it should be defined like this in web.xml
>
> <context-param>
>  <param-name>myParamName</param-name>
>  <param-value>myParamValue</param-value>
> </context-param>
>
> Now you can call getInitParameter("myParamName") on the
> ServletContext to retrieve it's value.
>
> ServletContext ctxt = servlet.getServletContext();
> String  sname = ctxt.getInitParameter("myParamName");
>
>      OR
>
> String paramValue =
>
request.getSession().getServletContext().getInitParameter("myParamValue");
>
> There is one ServletContext per "web application" per Java Virtual
Machine.
>
> If intialization parmaeter is defined for a specific servlet, then it'll
be
> accessible only by this servlet. To retrieve this parameter need to call
> getInitParameter() on this servlet.
>
> Hope it clears your doubt.
> - Ashutosh
>
> -----Original Message-----
> From: Ashutosh Satyam
> Sent: Thursday, May 20, 2004 10:45 AM
> To: Struts Users Mailing List
> Subject: RE: How to read a parameter in web.xml from Action class
>
>
> Try using the below mentioned code to read intialization parameter
> defined in the Web descriptor file.
>
> String sname = servlet.getInitParameter("myParamName");
>
>            OR
>
> ServletConfig config = servlet.getServletConfig();
> String sname = config.getInitParameter("myParamName");
>
> 'servlet' is a field defined in Action class, so it can be used in your
> action class.
> It returns the controller servlet instance (i.e instance of the
> ActionServlet ) to which
> the Action clas is attached to.
>
> Regards,
> Ashutosh
>
> -----Original Message-----
> From: Frank Burns [mailto:frankburns@the-hub.demon.co.uk]
> Sent: Thursday, May 20, 2004 8:59 AM
> To: Struts Users Mailing List
> Subject: Re: How to read a parameter in web.xml from Action class
>
>
> Sorry, see my CORRECTION below:
>
> ----- Original Message ----- 
> From: "Frank Burns" <frankburns@the-hub.demon.co.uk>
> To: "Struts Users Mailing List" <user@struts.apache.org>
> Sent: Thursday, May 20, 2004 4:19 AM
> Subject: How to read a parameter in web.xml from Action class
>
>
> > Hi,
> >
> > From an Action class, I want to read a parameter specified in the
web.xml
> > file. I thought I could place it in an <init-param> block, within the
> > <servlet-name>action</servlet-name> element, like this:
> >
> >     <init-param>
> >       <param-name>myParamName</param-name>
> >       <param-value>myParamValue</param-value>
> >     </init-param>
> >
> > and then read it within the Action class using:
> >
> >     String paramValue =
> >
request.getSession().getServletContext().getInitParameter("myParamValue");
>
>
> CORRECTION:
> request.getSession().getServletContext().getInitParameter("myParamName");
>
> >
> > But I get null.
> >
> > What am I doing wrong?
> >
> > Thanks,
> >
> > Frank.
> >
> >
> > ---------------------------------------------------------------------
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> >
>
>
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