Servlet to authenticate user.

Html code:

method="post"

action="http://localhost:8080/servlets-examples/servlet/PostParametersServlet">

Employee
Password

Servlet code:

import java.io.*;

import java.util.*;

import javax.servlet.*;

public class PostParametersServlet extends GenericServlet {

String pname,pvalue;

String A[] =new String[2];

int i=0;

String s1="Manan",s2="Jadhav";

public void service(ServletRequest request,ServletResponse response)

throws ServletException, IOException {

// Get print writer.

PrintWriter pw = response.getWriter();

// Get enumeration of parameter names.

Enumeration e = request.getParameterNames();

// Display parameter names and values.

while(e.hasMoreElements()) {

pname = (String)e.nextElement();

//pw.print(pname + " = ");

pvalue = request.getParameter(pname);

A[i]=pvalue;

//pw.println(pvalue);

i++;

}

if( A[1].equals("Manan") && A[0].equals("Jadhav"))

{

pw.println("User authenticated. \n Your are logged in. ");

}

else

{

pw.println("Invalid Username or Password");

pw.println("My name is Khan");

}

pw.close();

}

}