Q21
Question 21
Last updated
Question 21
Last updated
Created GreetServlet.java handles url patterns like "/Q21", "/Q21/greet" and "/greet" and renders the page greet.jsp every time. It also handles the post request with name given by user to append with greet message (it displays just greet message without any input or on just get request).
<%--
Created by IntelliJ IDEA.
User: HP
Date: 24-04-2021
Time: 17:37
To change this template use File
| Settings
| File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8"
language="java" %>
<html>
<head>
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-eOJMYsd53ii+scO/bJGFsiCZc+5NDVN2yr8+0RDqr0Ql0h+rP48ckxlpbzKgwra6" crossorigin="anonymous">
<title>Greet w.r.t. Current Time | JSP-4</title>
</head>
<body>
<div style="text-align: center;">
<div class="container-fluid">
<h1> ${greetMessage} ${name}
(Greet w.r.t. Current Time) | JSP-4</h1>
</div>
</div>
</div>
<form method="post" action="/Q21/greet">
<div class="form-group">
<div class="container-fluid mt-5 ">
<div class="container mt-2">
<label for="name">Enter Name</label>
</div>
<div class="container mt-2">
<input type="text"
class="form-control w-75 p-3"
id="name"
name="name"
placeholder="Enter Name"
required>
</div>
<div class="container mt-3 mx-10">
<input type="submit"
formmethod="post"
class="btn btn-primary"
value="Greet Me">
</div>
</div>
</div>
</form>
<div class="card-footer mt-5 text-center">
<div class="row align-items-start">
<div class="col-6">
<div class="container col-lg-6">
<a class="btn btn-primary"
onclick="history.back(-1)"
role="button">Back</a>
</div>
</div>
<div class="col-6">
<div class="container col-lg-6">
<a class="btn btn-primary"
href="http://localhost:8080/"
role="button">Home Page</a>
</div>
</div>
</div>
</div>
</body>
</html>
package com.example.ITJSP;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
import java.util.Date;
import javax.servlet.annotation.*;
@WebServlet(name = "GreetServlet",
value = "/GreetServlet",
urlPatterns = {"/Q21","/Q21/greet","/greet"})
public class GreetServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
Date date =
java.util.Calendar.getInstance().getTime();
int hours = date.getHours();
String greetMessage;
if(hours>=0 && hours<=12){
greetMessage = "Good Morning";
} else if(hours>=12 && hours<=15){
greetMessage = "Good Afternoon";
} else if(hours>=16 && hours<=20){
greetMessage = "Good Evening";
} else if(hours>=21 && hours<=24){
greetMessage = "Good Night";
} else {
greetMessage = "Good ";
}
request.setAttribute("greetMessage", greetMessage);
getServletContext().getRequestDispatcher(
"/greet.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException,
IOException {
String name = request.getParameter("name");
Date date =
java.util.Calendar.getInstance().getTime();
int hours = date.getHours();
String greetMessage;
if(hours>=0 && hours<=12){
greetMessage = "Good Morning";
} else if(hours>=12 && hours<=15){
greetMessage = "Good Afternoon";
} else if(hours>=16 && hours<=20){
greetMessage = "Good Evening";
} else if(hours>=21 && hours<=24){
greetMessage = "Good Night";
} else {
greetMessage = "Good ";
}
request.setAttribute("greetMessage", greetMessage);
request.setAttribute("name", name);
getServletContext().getRequestDispatcher(
"/greet.jsp").forward(request,response);
}
}
Try or Test The Corresponding Code Here
Note: Above Program Runs According to the Time Zone of the Cloud Machine
