How to pass parameters to a servlet – ServletConfig

Here’s a serlvet code example to demonstrate how to pass a parameter to a servlet by using ServletConfig “init-param” in web.xml

In the deployment descriptor (web.xml)

Put your parameter value in “init-param” and make sure inside the “servlet” element

        <servlet>

               <servlet-name>conig </servlet-name>

               <servlet-class>config</servlet-class>

               <init-param>

                       <param-name>email</param-name>

                       <param-value>admin@email.com</param-value>

               </init-param>

        </servlet>

        <servlet-mapping>

               <servlet-name>config</servlet-name>

               <url-pattern>/config</url-pattern>

        </servlet-mapping>

Servlet code

public void doGet(HttpServletRequest request, HttpServletResponse response)

        throws IOException{

               PrintWriter pw = response.getWriter();

               pw.println(getServletConfig().getInitParameter("email"));

        }

The “getServletConfig().getInitParameter(“email”)” method is use to get the ServletConfig parameter value in web.xml. Btw, this parameter only available for this servlet only. If you want a parameter which allow globally access by whole web application, you need put the parameter in servlet context element.

 the above is not a full code to execute but u have to make arrange according to architecture