implict object of jsp: "config"

[navat venu]

What is the main purpose of config implicit object in jsp?

As "servletConfig" facilitates to store name,value pairs(using <init-param> in web.xml for that particular servlet, is there any facility for jsp also?


I mean is there any facility to store name,value pairs in web.xml for using them in that particular jsp only?

pls clarify!!

[Mohd Fuzail]

Did you noticed whom Head First Series - JSP is dedicated.....???

anyway coming to point "Config allows initialization data to be passed to a JSP page's servlet."

For more information please refer More info on implicit objects
[ August 27, 2006: Message edited by: Mohd Fuzail ]

[navat venu]

shivani , can you please answer my query .

[Shivani Chandna]

Is there any facility to store name,value pairs in web.xml for using them in that particular jsp only?

Okay Navat , did you see in web.xml that <servlet> has <jsp-file> sub-element to it?. (Normally one mentions a <servlet-class> instead of jsp file)

For example:

<servlet>
    <servlet-name>MyServ</servlet-name>
    <jsp-file>/test/pack/MyJspFile.jsp</jsp-file>
    <load-on-startup>1</load-on-startup> 
    <init-param>
      <param-name>JspParam</param-name>
      <param-value>JspValue</param-value>
    </init-param>
</servlet>
 
<servlet-mapping>
    <servlet-name>MyServ</servlet-name>
    <url-mapping>/MyJspFile</url-mapping>     
</servlet-mapping>

Now in the above case , you can see how the init-param have been given to the JSP - Also you can see that settings like load-on-startup have been used for the JSP file - so that it is translated and compiled and loaded before any request has been made for it.

-----

Fuzail , config implicit object in JSP page is reference to ServletConfig instance. Whereas the initParam implicit EL object is a Map of context initialization paramateres/values. I think you mixed the two

Ah and for humor let me quote the "dedicated to" in HFJS.

This book is dedicated to whoever decided that the EL implicit object for a context param should be named initParam

Regards,
Shivani
[ August 26, 2006: Message edited by: Shivani Chandna ]

[Mohd Fuzail]

My aplologies, yeah i mixed both of them....



Will take care with next posting..

thanks for updation

[navat venu]

Thanks shivani!!

you gave the exact answer.The code give by you is working fine.