Dr R Anurekha: Form data and servlets

Simple program to demonstrate accessing a form data in a servlet

// Form to submit user name

<html>

<head>

<title>HTML Forms and Servlets</title>

<style>

label

{

font-family:vivaldi;

font-size:x-large;

letter-spacing:2px;

line-height:40px;

}

</style>

</head>

<body>

<h2>HTML and Servlets</h2></br>

<label>First Name </label>

</br> </br>

<button class="btn" type="button " >Click me!!! </button>

</center>

</form>

</body>

</html>

// Servlet to access form data and display a welcome message

import javax.servlet.http.*;

import javax.servlet.*;

import java.io.*;

import java.util.*;

public class formdata extends HttpServlet

{

public void doGet(HttpServletRequest req,HttpServletResponse res)

throws ServletException, IOException

{

//setting the content type

res.setContentType("text/html");

//create the stream to write the data

PrintWriter pw=res.getWriter();

String N = (String)req.getParameter("UsrName");

//writing html in the stream

pw.println("<html><body>");

if(N.length()==0)

pw.println("<H2>Welcome Guest.</H2>");

else

pw.println("<H2>Welcome "+N+".</H2>");

pw.println("</body></html>");

//closing the stream

pw.close();

}

Dr R Anurekha

Form data and servlets

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