SERVLET PROGRAM TO READ THE PARAMETERS by G Krishna

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Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://jakarta.ee/xml/ns/jakartaee" xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd" id="WebApp_ID" version="6.0">
    <display-name>Para</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.jsp</welcome-file>
        <welcome-file>default.htm</welcome-file>
    </welcome-file-list>
  
    <servlet>
        <servlet-name>ParameterServlet</servlet-name>
        <servlet-class>ParameterServlet</servlet-class>
    </servlet>
  
    <servlet-mapping>
        <servlet-name>ParameterServlet</servlet-name>
        <url-pattern>/ParameterServlet</url-pattern>
    </servlet-mapping>
    
</web-app>

ParameterForm.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Parameter Form</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f4;
            margin: 0;
            padding: 0;
        }
        .container {
            max-width: 400px;
            margin: 50px auto;
            padding: 20px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }
        h2 {
            text-align: center;
            margin-bottom: 20px;
        }
        form {
            display: flex;
            flex-direction: column;
        }
        label {
            font-weight: bold;
            margin-bottom: 5px;
        }
        input[type="text"] {
            padding: 8px;
            margin-bottom: 15px;
            border-radius: 4px;
            border: 1px solid #ccc;
        }
        input[type="submit"] {
            padding: 10px 20px;
            background-color: #007bff;
            color: #fff;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        input[type="submit"]:hover {
            background-color: #0056b3;
        }
    </style>
</head>
<body>
    <div class="container">
        <h2>Enter Your Details</h2>
        <form action="ParameterServlet" method="post">
            <label for="firstName">First Name:</label>
            <input type="text" id="firstName" name="firstName">
            <label for="lastName">Last Name:</label>
            <input type="text" id="lastName" name="lastName">
            <input type="submit" value="Submit">
        </form>
    </div>
</body>
</html>

ParameterServlet.java

import jakarta.servlet.ServletException;
import jakarta.servlet.annotation.WebServlet;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;

@WebServlet("/ParameterServlet")
public class ParameterServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;

    public ParameterServlet() {
        super();
    }

        protected void dopost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            response.setContentType("text/html");
        // Retrieve parameter values from the request
        String firstName = request.getParameter("firstName");
        String lastName = request.getParameter("lastName");

        PrintWriter out = response.getWriter();
        out.println("<!DOCTYPE html>");
        out.println("<html>");
        out.println("<head>");
        out.println("<title>Parameter Servlet Response</title>");
        out.println("</head>");
        out.println("<body>");
        out.println("<h2>Post Method - Parameter Servlet Response</h2>");

        // Print the first name and last name in the response
        out.println("<p>First Name: " + firstName + "</p>");
        out.println("<p>Last Name: " + lastName + "</p>");

        out.println("</body>");
        out.println("</html>");
    }

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