Write a servlet program which receives data from HTML forms and respond it

 

Index.html

<form action="welcome" method="POST">

Enter your name<input type="text" name="name"><br>

<input type="submit" value="login">

</form>

DemoServ.java

import javax.servlet.http.*;

import javax.servlet.*; 

import java.io.*;

public class DemoServ extends HttpServlet

{

public void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException

{

              res.setContentType("text/html"); 

              PrintWriter pw=res.getWriter();

              String name=req.getParameter("name");

              pw.println(“Hai”+name+"Welcome ");

              pw.close();

}

}

web.xml 

<web-app>

<servlet>

<servlet-name>DemoServlet</servlet-name>

<servlet-class>DemoServlet</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name> DemoServlet </servlet-name>

<url-pattern>/welcome</url-pattern>

</servlet-mapping>

</web-app>