I am trying to create a web application using JSP and Servlets only. In the web application users can register and then they can login. For this application I am using Oracle 10g express edition database.
The main problem with this application is that when the user fills up the form and clicks the Register me button,
a blank screen is displayed. However, the data is inserted into the table.
Structure of users table
======================
Name Null? Type
--------------------------------- -------- ---------------
USERNAME VARCHAR2(5)
EMAIL VARCHAR2(30)
PASSWORD VARCHAR2(20)
home.jsp
---------
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Home Page</title>
</head>
<body>
<h2>Welcome to the Home Page</h2>
<%
request.getAttribute("user");
%>
You can choose any one option<br>
<a href="register.jsp">Create an account</a><br>
<a href="login.jsp">Login to your account</a>
</body>
</html>
register.jsp
------------
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Registration Page</title>
<script type="text/javascript">
</script>
</head>
<body>
<form action="RegisterServlet" method="POST">
Name<input type="text" name="username" id="uname" required /><br>
Email address<input type="email" name="email" id="emailAddr" required /><br>
Password<input type="password" name="password" id="p1" required /><br>
Re-enter password<input type="password" name="repassword" id="p2" required /><br>
<input type="submit" value="Register me" onClick="return checkFields()"/>
<a href="home.jsp">Go Back to Home</a>
</form>
</body>
</html>
RegisterServlet.java
----------------------
RegisterModel.java
---------------------
login.jsp
---------
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Page</title>
</head>
<body>
<form action="LoginServlet" method="post">
User name<input type="text" name="user" required/><br>
Password<input type="password" name="pass" required/><br>
<input type="submit" value="Login"/>
</form>
</body>
</html>
LoginServlet.java
-------------------
LoginModel.java
-----------------
logged.jsp
-----------
<%@page contentType="text/html" pageEncoding="UTF-8" import="com.model.LoginModel"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Logged in Page</title>
<script>
function preventBack(){window.history.forward();}
setTimeout("preventBack()", 0);
window.onunload=function(){null};
</script>
</head>
<body>
<!-- Logout <A> LINK -->
<a href="LogOutServlet">Logout</a>
<% LoginModel logModel=(LoginModel)session.getAttribute("user"); %>
User ${logModel.username} logged in
<%-- Disabling this page caching in browser --%>
<%
response.setHeader("Cache-Control", "no-store");
response.setHeader("Pragma", "no-cache");
response.setHeader("Expires", "0");
%>
</body>
</html>
