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Servlet init parameter from JSP ?
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Dumitru Husleag
Greenhorn
Joined: Oct 01, 2003
Posts: 22
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I made a simple page that reads some information. And I set in web.xml a servlet: .... <servlet> <servlet-name>ParamsTest</servlet-name> <jsp-file>/jspGetParams.jsp</jsp-file> <init-param> <param-name>initParam</param-name> <param-value>initValue</param-value> </init-param> </servlet> ... and in the page I call this: ... Servlet init param : <%= getInitParameter("initParam")%> ... wich gives me this ... "Servlet init param : null " I works right if I use a servlet class instead of a jsp page. Question: What am I missing ?
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Dumitru
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Paul Anilprem
Enthuware Software Support
Ranch Hand
Joined: Sep 23, 2000
Posts: 2912
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How are you accesing this "servlet"?
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Nicholas Cheung
Ranch Hand
Joined: Nov 07, 2003
Posts: 4982
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Should you use the implicit variable config to get the parameter, instead of using this? Nick
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Sumitro Palit
Ranch Hand
Joined: Dec 13, 2003
Posts: 37
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Dumitru, I am assuming that you are accessing the page as a jsp and seeing the result that you described. You must create a servlet mapping to map the servlet instance that you have defined to the url for your jsp. Then when you try to access the jsp page with that mapped url pattern, the corresponding mapped servlet will be called and the init params defined for the servlet will come into play. <servlet-mapping> <servlet-name>ParamsTest</servlet-name> <url-pattern>/jspGetParams.jsp </url-pattern> </servlet-mapping> (Note: If you access it as the named servlet, you do get the init params correctly. Its only when you access the jsp directly without having this mapping, the container just creates another servlet instance for the jsp page without any init params.) Hope this explains the behavior, - ortimuS [ May 03, 2004: Message edited by: ortimus tilap ] [ May 03, 2004: Message edited by: ortimus tilap ]
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Dumitru Husleag
Greenhorn
Joined: Oct 01, 2003
Posts: 22
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Your answer is corect Ortimus Servlet mapping solved the problem: ... <servlet-mapping> <servlet-name>ParamsTest</servlet-name> <url-pattern>/jspParamsTest</url-pattern> </servlet-mapping> ... and a call of this form ... <form method="POST" action="./jspParamsTest"> ... Thanx alot Ortimus Subject can be closed
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subject: Servlet init parameter from JSP ?
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