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How to integrate OTP(One Time Password) in JSP Java


In this example i am going to discuss about how to integrate OTP(One Time Password) in JSP Java

Here we using 4 files for integrate OTP(One Time Password) in JSP Java.

index.html

<!DOCTYPE html>
<html>
<body>
<form method="post" action="process.jsp">
Name:<br>
<input type="text" name="name">
<br>
Email:<br>
<input type="text" name="email">
<br>
Phone:<br>
<input type="text" name="phone">
<br>
<br><br>
<input type="submit" name="save" value="submit">
</form>
</body>
</html>

process.jsp

<%@page import="java.util.Random"%>
<%@page import="java.io.BufferedReader"%>
<%@page import ="java.io.IOException" %>
<%@page import="java.io.InputStreamReader"%>
<%@page import="java.net.URL"%>
<%@page import="java.net.URLConnection"%>
<%@page import=" java.net.URLEncoder"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<%
String name=request.getParameter("name");
String email=request.getParameter("email");
String phone=request.getParameter("phone");
session.setAttribute("name",name);
session.setAttribute("email",email);
session.setAttribute("phone",phone);
String authkey = "130491ADE9VcIY7WyB5vst82d3";
//Multiple mobiles numbers separated by comma
String mobiles = phone;
Random rand = new Random();
int otp = rand.nextInt(900000) + 100000;
session.setAttribute("otp",otp);
//Sender ID,While using route4 sender id should be 6 characters long.
String senderId = "ABCDEF";
//Your message to send, Add URL encoding here.
String message = "Your OTP is "+otp;
//define route
String route="4";
//Prepare Url
URLConnection myURLConnection=null;
URL myURL=null;
BufferedReader reader=null;
//encoding message
String encoded_message=URLEncoder.encode(message);
//Send SMS API
String mainUrl="http://malussms.com/api/sendhttp.php?";
//Prepare parameter string
StringBuilder sbPostData= new StringBuilder(mainUrl);
sbPostData.append("authkey="+authkey);
sbPostData.append("&mobiles="+mobiles);
sbPostData.append("&message="+encoded_message);
sbPostData.append("&route="+route);
sbPostData.append("&sender="+senderId);
//final string
mainUrl = sbPostData.toString();
try
{
//prepare connection
myURL = new URL(mainUrl);
myURLConnection = myURL.openConnection();
myURLConnection.connect();
reader= new BufferedReader(new InputStreamReader(myURLConnection.getInputStream()));
String success="Your message sent sucessfully";
response.sendRedirect("otp.jsp");
//finally close connection
reader.close();
}
catch (IOException e)
{
e.printStackTrace();
}
%>
</body>
</html>

otp.jsp

<%@page import="java.util.Random"%>
<%@page import="java.util.*" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
<form action="otpprocess.jsp" method="post">
<input type="text" name="otpvalue"/>
<input type="submit" value="submit" />
</form>
</body>
</html>

otpprocess.jsp

<%@page import="java.sql.*"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%
String name=(String)session.getAttribute("name");
String email=(String)session.getAttribute("email");
String phone=(String)session.getAttribute("phone");
int otp= (Integer) session.getAttribute("otp");
String otpvalue=request.getParameter("otpvalue");
int enterOtp=Integer.parseInt(otpvalue);
if(otp==enterOtp)
{
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "");
Statement st=conn.createStatement();
int i=st.executeUpdate("insert into student(name,email,phone)values('"+name+"','"+email+"','"+phone+"')");
out.println("Thank you for register.!");
}
catch(Exception e)
{
System.out.print(e);
e.printStackTrace();
}
}
else
{
out.println("OTP not matched");
}
%>