Just
like initialization parameters, you can specify context parameters in
web.xml. Only difference is initialization parameters are specific to
particular Servlet/jsp, where as Context parameters are available to
all the servlets/jsps in your web application.
GetData.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Servlet Config</title> </head> <body> <form method="get" action="/jsp/JspInit"> <input type="submit" value="Click Me"> </form> </body> </html>
GetBook.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>JSP Page</title> </head> <body> <h1> Author : <%= application.getInitParameter("Author") %> <br /> Book : <%= application.getInitParameter("Book") %> <br /> Blog : <%= application.getInitParameter("URL") %> </h1> </body> </html>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> <servlet> <servlet-name>JspInit</servlet-name> <jsp-file>GetBook.jsp</jsp-file> </servlet> <servlet-mapping> <servlet-name>JspInit</servlet-name> <url-pattern>/JspInit</url-pattern> </servlet-mapping> <context-param> <param-name>Author</param-name> <param-value>Krishna</param-value> </context-param> <context-param> <param-name>Book</param-name> <param-value>Self Learning Java</param-value> </context-param> <context-param> <param-name>URL</param-name> <param-value>self-learning-java-tutorial.blogspot.com</param-value> </context-param> </web-app>
Output
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