package dd.cc;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import java.lang.*;
public class ReadParams extends HttpServlet{
public void init() throws ServletException{
ServletConfig config = getServletConfig();
//demonstrating the usage of InitParameterNames
getServletContext().log(" Init method called ");
//get the value of a initialization parameter name="ok"
String param = config.getInitParameter("ok");
getServletContext().log("config ::"+config);
getServletContext().log("config.getInitParameter(\"ok\") ::
"+config.getInitParameter("ok"));
getServletContext().log("Initialization Parameter :: "+param);
//get a enumeration of all Initialization Parameter Names
Enumeration enum = config.getInitParameterNames();
for(;enum.hasMoreElements();){
//get the name of Init Parameter
String name = (String)enum.nextElement();
//get the value of Init Parameter name
String value = config.getInitParameter(name);
getServletContext().log("********Enumeration example***********");
getServletContext().log(" Parameter Name :: "+name);
getServletContext().log(" Parameter Value :: "+value);
getServletContext().log("**************************************");
}
//Initialization Parameter can be retrieved using getServletContext()
method too.
String var = getServletContext().getInitParameter("Global");
getServletContext().log("The Value of init param via getServletContext()
method is "+var);
//out.println("<b>The Value of Init Parameter is </b>"+param);
}
public void doPost(HttpServletRequest request, HttpServletResponse
response)
throws ServletException, IOException{
doGet(request,response);
}
public void doGet(HttpServletRequest request,HttpServletResponse
response)throws ServletException, IOException {
PrintWriter out = response.getWriter();
response.setContentType("text/html");
}
}
with a entry being as below in web.xml file
<servlet>
<servlet-name>ReadParams</servlet-name>
<servlet-class>com.sysarris.register.action.ReadParams</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ReadParams</servlet-name>
<url-pattern>/ReadParams</url-pattern>
</servlet-mapping>
<init-param>
<param-name>ok</param-name>
<param-value>Sysarris</param-value>
</init-param>
<init-param>
<param-name>Global</param-name>
<param-value>Around the World in 80 days </param-value>
</init-param>
when i exceute the servlet i get the following values as null even though
there is a entry in web.xml
10/26 10:30:26 user ReadParams: init
10/26 10:30:26 user Init method called
10/26 10:30:26 user config ::[EMAIL PROTECTED]
10/26 10:30:26 user config.getInitParameter("ok") :: null
10/26 10:30:26 user Initialization Parameter :: null
10/26 10:30:26 user The Value of init param via getServletContext() method
is null
help needed
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