Program To Create A Login Page Using Jsp

  1. How To Create A Login Page
  2. Program To Create A Login Page Using Jsp Email
  3. Program To Create A Login Page Using Jsp Access
  1. The first thing that you need to do to create a servlet project on Netbeans is choose Java Web from the categories. After that, select Web Application. Next step is giving a suitable project name.
  2. Profile.jsp it provides simple message if user is logged in, otherwise forwards the request to the login.jsp page. In this example, we are using the Oracle10g database to match the emailId and password with the database.
  3. In this article we discuss how to create a JSP web page in the Netbeans IDE 7.4 using the Tomcat Server 7.0.40. To create a JSP web page in the Netbeans IDE we must do the following three main steps: Start by creating a 'Java web' -> 'web application project'. Create a JSP web file. Last and finally, start the Tomcat Server and deploy the project.

In this tutorial, we are going develop sample programs with JSP and using MVC architecture.

Program To Create A Login Page Using Jsp

How To Create A Login Page

Following Program Examples, will be developed -

Related Posts. Jsp, Servlet, JSTL and MySQL Simple CRUD Application. JSTL 1.1: simple login and logout example with session. Authentication based secure login-logout using JSF 2.0 and PrimeFaces 3.4.1. Search from Database using Servlet and JSP. Sample Login app in android using Servlet and JSON Parsing. PrimeFaces login example using MySQL db. Below is the main.jsp JSP program to handle the input given by web browser using the GET or the POST methods. Infact there is no change in the above JSP because the only way of passing parameters is changed and no binary data is being passed to the JSP program.

Using registration form through JSP

In Registration form, we will have a form to fill all the details which will contain name, username, password, address, contact number, etc.

This form will help us to register with the application. They take all our details and store it in a database or cache.

In this example, we are going to take 'Guru Registration form' which has the following fields:

  1. First Name
  2. Last Name
  3. Username
  4. Password
  5. Address
  6. Contact Number

After filling all these details we have submit button, on click of that button all the details will be stored.

Register_1.jsp

Explanation of the code:

Code Line 11: Here we are taking a form name which has action i.e. the servlet to which the request will be processed and servlet name is guru_register.java. The request will be processed through POST method.

Code Line 14-16: Here we are taking input type as text and name is first name

Code Line 18-20: Here we are taking input type as text and name is last name

Code Line 22-24: Here we are taking input type as text and name is username

Code Line 26-28: Here we are taking input type as password(this will hide the password when typed) and name as password

Code Line 30-32: Here we are taking input type as text and name as address

Code Line 34-36: Here we are taking input type as text and name as contact

Code Line 37: Here we are taking a button of type submit and value is also submit. On click of this button the action will go to corresponding guru_register servlet where all the parameter values will be passed in the request.

Guru_register.java

Explanation of the code:

Code Line 14: Here we defining guru_servlet which is extending HttpServlet.

Code Line 18: This action doPost() method which will be called when we mention POST in action attribute in the above JSP form.

Code Line 20-25:Here we are fetching the values from request i.efirst_name, last_name , username, password, address and contact using request.getParameter.

Code Line 27-32: Here we are taking if condition where we check any of the parameters which are fetched from request as whether they are empty or not. If any of the parameter is empty then it will enter this condition ( first_name.isEmpty() || last_name.isEmpty || username.isEmpty || password.isEmpty || address.isEmpty || contact.isEmpty()) and we have to fetch RequestDispatcher object using request object which will forward request to register_1.jsp. Here we are also including request and response objects.

Code Line 33-37: This case will execute when any of the parameter is not empty .We will have to fetch requestDispatcher object using request object which will forward request to register_2.jsp.Here we are forwarding request and response objects.

Register_2.jsp

Explanation of the code:

Code Line 10: Here we are saying welcome user. This JSP will be called when all the parameters are filled.

When you execute the above code , you get the following output:

Output:

When we click on register_1.jsp, we will get a form which will have details like first name, last name, username, password, address, contact. All the details have been filled. When we click on submit button then we get the message as 'Welcome User'

Login and logout form

Like registration form we will have a login and logout form.

In this example, we have taken Login form where we have two fields 'username' and 'password' with a submit button.

When we click on submit button then we get welcome message with a logout button.

When we click on logout button then we get back to login form.

Register_3.jsp

Explanation of the code:

Code Line 10:Here we are taking a form name which has action i.e. servlet to which it has passed is guru_login.java. The method through which it will pass its POST.

Code Line 13-16: Here we are taking an input field 'username' which is of the type text.

Code Line 17-20: Here we are taking an input field 'password' which is of the type password.

Program To Create A Login Page Using Jsp Email

Code Line 22: Here we are taking a 'submit' button with the value'Login' on which we click then it goes to servlet guru_login where both the fields are taken using request object.

Guru_login.java(servlet)

Explanation of the code:

Code Line 5-9: Here we are importing necessary imports in the code.

How to create a login page in html

Code Line 14: Here we are taking guru_login servlet which extends HttpServlet.

Code Line 21: Here we are using doPost() method as in the form we are using POST method.

Code Line 23-24: Here we taking parameters using request object i.e. username and password.

Code Line 25-29: In this way, we are taking 'if' condition where we are checking username and password whether they are empty or not.In this case if it is empty then we are getting requestdispatcher object which forwards to register_3.jsp with request and response objects.

Code Line 30-34: This will be executed if both are not empty then it forwards the request to register_4.jsp with request and response objects.

Register_4.jsp

Explanation of the code:

Code Line 12: Here we are getting parameter 'username' from the request object in the string object username.

Code Line 13: Here we have a welcome message with the username.

Code Line 14: Here we link to logout the form which redirects to register_3.jsp.

When you execute the above code then you get the following output:

Output:

Here when we click on register_3.jsp we get two fields'username' and 'password' with a login button.

After clicking on the Login button you get the below message with a button of Logout.

Program To Create A Login Page Using Jsp Access

When you click on logout button you go back to login page