Jsp config implicit object

JSP config implicit object
Prof. Neeraj Bhargava
Kapil Chauhan
Department of Computer Science
School of Engineering & Systems Sciences
MDS University, Ajmer

JSP config implicit object
 In JSP, config is an implicit object type ServletConfig.
 This object can be used to get initialization parameter
for a particular JSP page.
 The config object is created by the web container for
each jsp page.

Cont..
 Generally, it is used to get initialization parameter
from the web.xml file.

Example of config implicit object:
 index.html
 <form action="welcome">
 <input type="text" name="uname">
 <input type="submit" value="go"><br/>
 </form>

Cont..
 web.xml file
 <web-app>

 <servlet>
 <servlet-name>sonoojaiswal</servlet-name>
 <jsp-file>/welcome.jsp</jsp-file>

 <init-param>
 <param-name>dname</param-name>
 <param-value>sun.jdbc.odbc.JdbcOdbcDriver</param-value>
 </init-param>

 </servlet>

 <servlet-mapping>
 <servlet-name>sonoojaiswal</servlet-name>
 <url-pattern>/welcome</url-pattern>
 </servlet-mapping>

 </web-app>

Cont..
 welcome.jsp
 <%
 out.print("Welcome "+request.getParameter("uname")
);

 String driver=config.getInitParameter("dname");
 out.print("driver name is="+driver);
 %>

Assignment
 Explain JSP config implicit object with suitable
example.

Jsp config implicit object

More Related Content

What's hot (19)

More from chauhankapil (20)

Recently uploaded (20)

Jsp config implicit object