JSP config object is an instance of javax.servlet.ServletConfig. This object is used to get the configuration information about a page like servlet name, servlet context, configuration parameters etc.
Example:
index.jsp
<html> <head> <title>config implicit object example</title> </head> <body> <h3>To see the website name click on the below link.</h3> <a href="welcome.jsp">Click here</a> </body> </html> |
welcome.jsp
<html> <head> <title>config implicit object example</title> </head> <body> <% String companyWebsite = config.getInitParameter("companyWebsiteName"); out.print("Company website: " + companyWebsite); %> </body> </html> |
web.xml
<web-app> <servlet> <servlet-name>welcomeServlet</servlet-name> <jsp-file>/welcome.jsp</jsp-file> <init-param> <param-name>companyWebsiteName</param-name> <param-value>www.w3spoint.com</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>welcomeServlet</servlet-name> <url-pattern>/welcome.jsp</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app> |
Output:
Click on the link.
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