*Example of Login and Logout Cookie in Java.
~File Name:
1) Login.Html
2) link.html
3)LoginServlet.java
4)LogoutServlet.java
5)ProfileServlet.java
* Login.html
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<form action="LoginServlet" method="post">
name:<input type="text" name="name"><br><br>
Password:<input type="password" name="password"><br> <br>
<input type="submit" name="go">
</form>
</body>
</html>
@Override
* ProfileServlet.java
response.setContentType("text/html");
request.getRequestDispatcher("link.html").include(request, response);
}
*Profile View.
~File Name:
1) Login.Html
2) link.html
3)LoginServlet.java
4)LogoutServlet.java
5)ProfileServlet.java
* Login.html
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<form action="LoginServlet" method="post">
name:<input type="text" name="name"><br><br>
Password:<input type="password" name="password"><br> <br>
<input type="submit" name="go">
</form>
</body>
</html>
*Link.html
<!DOCTYPE html>
<html>
<head>
<title>TODO supply a title</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<a href="login.html">login</a> ||
<a href="logoutServlet">logout</a> ||
<a href="ProfileServlet"> view Profile </a>
</body>
</html>
*LoginServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginServlet extends HttpServlet {
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
String name=request.getParameter("name");
String password=request.getParameter("password");
request.getRequestDispatcher("link.html").include(request, response);
if(password.equals("ujash"))
{
out.println("<br><br>You have successfully login");
out.println("<br>welcome ::"+name);
Cookie ck=new Cookie("name",name);
response.addCookie(ck);
}
else
{
out.println("<br><br>You have to must check password..Please check password again");
}
out.close();
}
}
*logoutServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
*
* @author DELL
*/
@WebServlet(urlPatterns = {"/logoutServlet"})
public class logoutServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
request.getRequestDispatcher("link.html").include(request, response);
Cookie ck=new Cookie("name","");
ck.setMaxAge(0);
response.addCookie(ck);
out.println("<br><br>you have Successfull logout");
out.close();
}
}
* ProfileServlet.java
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(urlPatterns = {"/ProfileServlet"})
public class ProfileServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out=response.getWriter();
request.getRequestDispatcher("link.html").include(request, response);
Cookie ck[]=request.getCookies();
if(ck!=null)
{
String name=ck[0].getValue();
if(!name.equals("")||name!=null)
{
out.println("<br>Welcome to Your Profile ");
out.println("<br>Welcome ::"+name);
}
}
else
{
out.println("<br>You have no Login");
request.getRequestDispatcher("login.html").include(request, response);
}
}
}
OutPut
*Logout
*View Profile With Out Login.
Thanks
Happy Coding.!! ;)
No comments:
Post a Comment