myjavahub4: JSP Config Implicit Object

Introduction:

1. The config object allows you to access the initialization parameters for the Servlet and JSP engine.

2. The config object is an instance of the class javax.servlet.ServletConfig.

3. all methods of ServletConfig interface we can apply on config also

following is the list of applicable methods.

§ getInitParameter ( )

§ getInitParameterNames()

§ getServlerName()

Example: index.html

<html>

<body>

</body>

</html>

Web.xml

<web-app>

<servlet-name>action</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>action</servlet-name>

<url-pattern>/welcome</url-pattern>

</servlet-mapping>

</web-app>

Welcome.jsp

<html>

<body>

out.print("welcome"+request.getParameter("uname"));

String driver = config.getParameter("dname");

out.print("driver name is ="+driver);

</body>

</html>

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