Many websites use URL redirection technique to forward the original request from one location to another several times for different reasons (Domain forwarding, URL shortening, Privacy protection, Maintaining similar domain names referring single website, etc.). In this post, I'll try to demonstrate how to get all the redirections of a URL using Apache HttpComponents HttpClient. A live demo will be a bonus here.
This example shows how to determine click position (row and column number) on click of a table cell using jQuery.
If we directly take the binary distribution of Apache Hadoop 2.2.0 release and try to run it on Microsoft Windows, then we'll encounter ERROR util.Shell: Failed to locate the winutils binary in the hadoop binary path.In the previous post - Build, Install, Configure and Run Apache Hadoop 2.2.0 in Microsoft Windows OS, I have already described how to build Windows distribution of Apache Hadoop 2.2.0. But if you are feeling little bit lazy to perform all the lengthy steps described there and want to get started with Hadoop quickly by-passing those steps, then this is the post worth looking into.
Good news for Hadoop developers who want to use Microsoft Windows OS for their development activities. Finally Apache Hadoop 2.2.0 release officially supports for running Hadoop on Microsoft Windows as well. But the bin distribution of Apache Hadoop 2.2.0 release does not contain some windows native components (like winutils.exe, hadoop.dll etc). As a result, if we try to run Hadoop in windows, we'll encounter ERROR util.Shell: Failed to locate the winutils binary in the hadoop binary path.
In this article, I'll describe how to build bin native distribution from source codes, install, configure and run Hadoop in Windows Platform.
Nowadays we use different URL shortening services (like bit.ly, TinyURL, Google URL Shortener etc.) to shorten long URL to fit in micro-blogging sites (like Twitter), to beautify a link, view analytics on link clicks, make a link manageable for sharing (in SMS or printed hard copy, book, magazine etc.) or obscure the underlying address. But large portion of shortened links are used just to disguise spam or bad-sites containing malware, spyware, XSS attacks etc. So for safe browsing, sometimes revealing the destination of shortened link is necessary too.
Here, we'll discuss one programmatic approach (using java.net.HttpURLConnection) to expand shortened links.
HTTP basic authentication (BA) is a simple authentication mechanism. When a web client requests any secured web resources, server sends an HTTP response with status code 401 (Unauthorized) and WWW-Authenticate HTTP header like WWW-Authenticate: Basic realm="realm here". And browser pops up a login dialog prompting for User name and Password for that realm.
This example shows how to configure HTTP basic authentication using Spring Security framework.
In previous posts Spring Security 3 Hello World Example and Spring Security Logout Example, we have used default login form generated by Spring Security framework. Now we'll set up a custom login form for authentication with username and password.
Eclipse platform provides different useful Ant tasks to interact with the workspace. If you have added any such Ant task (say eclipse.refreshLocal) in your ant build script and started getting "Problem: failed to create task or type eclipse.refreshLocal. Cause: The name is undefined.", then this is the post worth looking into.
reCAPTCHA is a free CAPTCHA service to protect a site against spam and other types of automated abuse by bots or computer programs. reCAPTCHA provides widget which can easily be integrated to your blog, forum, comment, registration form, contact form, etc and you can be rest assured that only human is posting in your site.
This post will guide you on how to integrate free anti-bot service reCAPTCHA with a Spring MVC application.
Spring Security provides Logout Handling Service for logging out by navigating to a particular URL (by default /j_spring_security_logout). LogoutFilter starts processing when a request comes for /j_spring_security_logout url and delegates to LogoutHandler(s) to perform the actual logout functionality like clearing security context, invalidating session, etc. Based on logout configuration, a redirect will be performed to the URL logout-success-url after logout.
In this example, we'll integrate Spring Logout handling mechanism in Spring Security 3 Hello World Example to demonstrate logout functionality.