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Update 5/12/2016: Watch Stormpath CTO Les Hazlewood’s presentation on. We just released a major upgrade of, which now includes Java Webapp (Servlet 3.1+) support with a ton of user automation. Just drop our into your Java web application and boom – instant user management with little to no coding required.
This post is a quick tutorial, including Java and JSP code templates, to show you just how quickly you can build a Java web app with a complete set authentication and user management features and user interfaces with Stormpath. If you’ve built a Java web application, you know the time and pain involved in building out proper authentication and user management. Even if you use a great framework like or, there’s still a lot of boring UI work and high risk backend work. At a minimum, you have to build UI screens for registration, login, and forgot password in addition to controllers processing each view, logout handlers, etc. And then you have to worry about security issues like password hashing schemes, updating hashing algorithms as computation improves, cross-site request forgery (CSRF) protection, cross-site scripting (xss) attacks, and more. Stormpath hooks into typical Java web applications and gives so you can get on with what you really care about – your application. In fact, you get full user interfaces without writing a single line of code.
By the time you’re done with this tutorial (less than 15 minutes from now), you’ll have a fully-working Java web application. We will focus on our Stormpath-Servlet plugin that has a ton of user automation.
You just drop a plugin into your web application and boom – instant user management with little to no coding required. What You’ll Build in this Java Servlet Web App Tutorial: You’ll build a simple Java web application using the standard Servlet 3+ and JSP APIs.
4.0.0 com.stormpath.samples stormpath-webapp-tutorial 0.1.0 war com.stormpath.sdk stormpath-servlet-plugin 1.1.1 javax.servlet javax.servlet-api 3.1.0 provided javax.servlet jstl 1.2 ch.qos.logback logback-classic 1.1.7 runtime org.apache.tomcat.maven tomcat7-maven-plugin 2.2 /. This is just a standard JSP file with a.tag extension instead of a.jsp extension. The element will be replaced with the page content for any page that uses this template. Write a Home Controller For security reasons, we like to ensure that JSP files themselves are never directly accessible during a request. Instead, we want a Controller to process the request and then render the JSP to the request. To do this, we’ll create a simple ‘Home’ controller that renders the internal home.jsp page: src/main/java/tutorial/HomeController.java. HomeController tutorial.HomeController HomeController / default /assets/.
Open up a browser and visit You’ll see the home page we just created above: Pretty cool! Now, to be honest, this isn’t wildly exciting. That is what is supposed to happen after all. But the awesome features – the part you have been waiting for – is all the automatic stuff. For example, the login page! Try the Stormpath User Login Page Click the Login button at the top right of the page, or manually visit and you’ll see this: That’s right!
A login page with best practice -protection built right in, and you didn’t have to write a single line of it. Now that is awesome! You can customize which fields are displayed in which order, as well as the entire look and feel if you wanted, with full internationalization (i18n) capabilities. That’s out of scope for this article, but you can read about later if you wanted. It doesn’t stop there of course – you get all sorts of goodies, like user account registration, email verification and forgot password automation, token authentication and much more! Register a New User with Stormpath Now you can’t login until you create a user account, so go ahead and click the ‘Create Account’ link or manually visit the page and you’ll see this: Go ahead and fill out and submit the form – you’ll be given a new user account that you can use to log in right away.
Verify User Email Addresses Now, what about email verification? Many web applications want to ensure that newly registered users must verify their email address before they can login to the application. This helps ensure that:.
Email addresses cannot be abused by people that do not own them. The application has a way of communicating with the user if necessary. The registration process was completed by a human being (and not a ‘bot’ performing automatic registration, which could be used for malicious purposes). This is covered too! You just have to enable email verification. Since this is a shorter tutorial, we’ll move on, but feel free to turn that on if you like and try it out.
Logout your User If you are still logged in, click the logout button on the upper right. This will visit /logout, which will automatically log you out and then redirect you back to the web app’s context root page ( /) by default (you can customize this next URI later). We’ll also make one more change to the web app, so go ahead and shut down the application by pressing CTRL-C. Implement Views for Forgot Password, Change Password and More The plugin supports other views out of the box as well, which you can read about in the.
Simple Servlet Program For Login Page In Java
But we want to show you one more thing before we wrap up this tutorial: access control. Enforce Access Control (Authorization) with Stormpath The Stormpath Java Webapp Plugin also has the ability to enforce access control based on URI path.
For example, you can ensure that only authenticated users may visit the /account URI within your application. Or that maybe only accounts within the admin group can visit the /admin URI.
Servlet Example
To demonstrate this, we’ll create a /dashboard view that only authenticated users should be able to see. This represents a common ‘landing page’ that a user might be shown immediately after login. Let’s create a ‘Dashboard’ controller: src/main/java/tutorial/DashboardController.java. HomeController tutorial.HomeController HomeController / DashboardController tutorial.DashboardController DashboardController /dashboard default /assets/. The first line means “After the user successfully logs in, I want the next URI they visit to be /dashboard“. The plugin’s login controller will automatically redirect the newly authenticated user to this location. The second line means “in order for anyone to visit the /dashboard URI, they must be authenticated (‘authc’ is short for ‘authenticated’).
This enforces all requests to be authenticated by a valid user account before being allowed to continue. If they are not, they will be redirected to the login page to login first, and then automatically be redirected back to their originally requested URI. Run the Updated Java Web Application Now that we’ve added a dashboard view and controller, and a simple stormpath.properties file, let’s try it out! If you haven’t already, shut down the application by pressing CTRL-C. Now start it up: Maven. Now try to visit – you will be redirected to login as expected. Log in with a user account you created previously and then it will automatically redirect you back to the dashboard.
Php Code For A Login Page
Stormpath Java Servlet Plugin — Advanced Features Congratulations! You now have a complete web application, with automatic user registration, login, forgot password/reset workflows, logout, custom data editing, and access control enforcement! But we’ve just scratched the surface of what you can do.
Also supported:. Full default view customization with internationalization (i18n) support. Authorization assertions (based on account data, like username, which groups they belong to, etc). Token Authentication for Javascript and mobile clients (we implemented OAuth for you).
HTTP Basic Authentication for both username/password and API Keys. Event listeners to react to login, logout, registration, etc events. Caching for enhanced performance. Convienent filter chain definitions for custom authentication or authorization rules. Easy Stormpath SDK Client configuration and request access. and more! Please see the complete for full information.
Java servlet redirect FAQ: Can you provide an example of how to perform a Java servlet redirect? Some time ago I wrote about. Depending on the circumstance I might rather redirect from a servlet to a JSP.
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When I need to to do a redirect instead of a forward I use this code: private String LOGINPAGE = 'login.jsp'; // other code here. Response.sendRedirect(LOGINPAGE); Of course in this example the response object is an instance of the standard HttpServletResponse class. From a user's perspective, one of the nicest things about using a redirect instead of a forward is that the URL for a page can look a lot cleaner. Actually, that's the reason I'm using it today. I'm working on a prototype for a client, and want them to be able to see the URL's and names of my JSP pages, so we can use those page names as part of our vocabulary.
This is a non-production concern, but I always think about trying to optimize the requirements process from the domain expert's perspective, and this is a part of that effort.
The client requests the home page and the server replies with the HTML code of the requested page. Once the client requests to view a certain page by writing its URL (in our example the URL is ), the server replies to this request by sending the corresponding HTML data which is displayed by the client's browser.
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