COMPUTER PROGRAMMING AND LOGICS: Servlet Program 2: : Methods of Srevletcontext and request

index.jsp
<%--
 Document : Program for ServletContext(setAttribute(),getAttribute() ) request(getLocalAddr(),getContentType())
 Created on : 4 Jul, 2018, 1:48:58 PM
 Author : N.Jayachandra
--%>

<%@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>WELCOME TO ALL </h1>
 <a href="NewServlet1"> To Reach the UnReached </a>
 </body>
</html>
---------------------------------------------------------------------------------------------------
NewServlet1.java

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.*;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
*
* @Author : N.jayachandra
*/
public class NewServlet1 extends HttpServlet {


 protected void processRequest(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 response.setContentType("text/html;charset=UTF-8");
 try (PrintWriter out = response.getWriter()) {


ServletContext context=getServletContext();
context.setAttribute("hotelname","VIRUNTHU SAPPIDA VANGA HOTEL");
context.setAttribute("hoteladdress"," 14,Makkal Mandram,Madurai");
out.println(" Welcome to first servlet");
out.println(" ");
out.println("local address is "+request.getLocalAddr());
out.println(" ");
out.println("<a href='NewServlet2'>VAZHI </a>");
out.close();
 }
 }


 @Override
 protected void doGet(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 processRequest(request, response);
 }


 @Override
 protected void doPost(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 processRequest(request, response);
 }


 @Override
 public String getServletInfo() {
 return "This is to see the usage of getattribute";
 }

}
------------------------------------------------------------------------------------------------------
NewServlet2.java

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class NewServlet2 extends HttpServlet {

 protected void processRequest(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 response.setContentType("text/html;charset=UTF-8");
 try (PrintWriter out = response.getWriter()) {

 ServletContext context=getServletContext();

String hname=(String)context.getAttribute("hotelname");
String haddress=(String)context.getAttribute("hoteladdress");
out.println(" ******Reteriving the details of variable using getattribute()******");
out.println(" ");
out.println("_________________________________________________________");
out.println(" ");
out.println("ContentType: " + request.getContentType());
out.println(" ");
out.println(" You Are Welcome To "+hname);
out.println(" ");
out.println("Address "+haddress);
out.println(" ");
out.println("__________ ______________________________________________");
out.println(" ");
out.println("context type "+response.getContentType());
out.println(" ");
out.println("________________________________________________________");
out.println(" ");
out.println("Valga Vazhamudan ! Visit Again");
out.close();
 }
 }

 @Override
 protected void doGet(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 processRequest(request, response);
 }


 @Override
 protected void doPost(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 processRequest(request, response);
 }

 @Override
 public String getServletInfo() {
 return " Valga Valamudan Visit Again ";
 }

}
------------------------------------------------------------------------------------------------------
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
 <servlet>
 <servlet-name>NewServlet1</servlet-name>
 <servlet-class>NewServlet1</servlet-class>
 </servlet>
 <servlet>
 <servlet-name>NewServlet2</servlet-name>
 <servlet-class>NewServlet2</servlet-class>
 </servlet>
 <servlet-mapping>
 <servlet-name>NewServlet1</servlet-name>
 <url-pattern>/NewServlet1</url-pattern>
 </servlet-mapping>
 <servlet-mapping>
 <servlet-name>NewServlet2</servlet-name>
 <url-pattern>/NewServlet2</url-pattern>
 </servlet-mapping>
 <session-config>
 <session-timeout>
 30
 </session-timeout>
 </session-config>
</web-app>
------------------------------------------------------------------------------------------------------

COMPUTER PROGRAMMING AND LOGICS

Saturday, 21 July 2018

Servlet Program 2: : Methods of Srevletcontext and request

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