Blogs

Introduction Recently there have been a bunch of questions lately in Slack, in Ask, and even in Liferay Support tickets complaining about the time it takes to log into Liferay and what can be done to improve performance, specifically targeting the hash algorithms... TL;DR - Liferay has increased the rounds on the PBKDF2 hash which is detrimental to your login...

Just a quick one today... A community member reported getting an exception during module deployment: INFO [com.liferay.portal.kernel.deploy.auto.AutoDeployScanner][AutoDeployDir:238] Processing com.liferay.report.jar ERROR [fileinstall-directory-watcher][DirectoryWatcher:1195] Unable to start bundle: ...

Introduction You may have seen my blog Setting Up JNDI in Liferay 7.4 which I posted to explain how to do a JNDI lookup. The code works, I assure you, but there's one group of developers that blog didn't serve: Spring Portlet Developers. Whether you are developing using PortletMVC4Spring and Spring 5, or you are developing using Spring Portlet MVC under an older ...

Introduction I've been working with a client to upgrade their Spring portlet wars to Liferay 7.4. And the update is kind of big as we're upgrading Spring, changing to PortletMVC4Spring (needed for Spring 5), ... They have a large number of Spring portlet wars, but in reviewing the code I noticed that each of the wars had duplicate Spring services defined into the Spring...

Introduction Liferay development has been changing throughout the years with its different versions. With 6.x we had WAR portlets. 7.0 came along and with it OSGi modules were the norm. And now, 7.4 has brought something completely new: Remote Apps. You can check this other blog and the official documentation for a thorough explanation about Remote Apps.   So, what...

Introducción El desarrollo en Liferay ha ido cambiando a lo largo de los años con sus distintas versiones. Con las versiones 6.x teníamos los portlets de tipo WAR. Cuando llegó la versión 7.0 los módulos OSGi pasaron a ser el estándar. Y ahora, 7.4 nos ha traído algo totalmente nuevo: Remote APPs. Si queréis una explicación más detallada sobre Remote Apps podéis echar un...

Introduction So my friend Thiago Moreira posted the following (slightly edited) message to our internal Slack: Hey, so I've built a module for 7.4 GA5, but when it is deployed to 7.4 GA16, I get a bunch of "unresolved requirement" exceptions and the module won't be available. Is there something I need to set so my module will work on both GA5 and...

Just a quick one today... In previous versions of Liferay, if you were browsing a site as a guest but wanted to access a private page or a private site, Liferay would automagically show you the login form so you could authenticate before accessing the page or site. This has been changed in 7.4. It was determined that just by showing the login form, Liferay was leaking the fact that the page...

Introduction Recently I was asked how to implement MDC and/or NDC in Liferay 7.4, and since I thought it might be interesting to a wider audience, I'm going to blog about it here. Background In a multithreaded, multiuser environment such as in a web application like Liferay, different threads in the container will be handling different requests, but likely each request is doing something...

Introduction In November of 2018, I authored a blog, Boosting Search. In that blog, I showed how to boost search results for tag matches in an effort to provide some alternative to GSA's KeyMatch support. A lot has changed in Liferay since that blog was posted, and it turns out there are much easier ways now in DXP 7.4 that won't require any code at all... Results Ranking In discussing the...

Overview In this blog I'll explain how to implement a custom Headless API module, configure an OAuth2 authorization and consume the API.  We’ll implement the Headless API for “App manager” functionality with endpoints to get the list of apps, get app details, create/update/delete the app (“App” here is a model, describing some external application with the following...

Introduction I've worked with clients that, for one reason or another, needed to change their database platform. This ask has increased with the move to DXPCloud and MySQL database. I'm not sure there's a well defined plan for how to migrate a Liferay database, so I thought I'd blog about it. Now, if you know anything about me, you know I'm a planner and I create (sometimes intricate)...

Introduction I was recently polling my coworkers looking for new blog ideas, and Filipe Melo asked about Websockets. I haven't seen any other documentation or blogs about building Websocket solutions for Liferay, so I figured this would be an interesting challenge. Websockets was introduced to provide a full duplex and realtime client/server communication path between remote clients and your...

Introduction My friend and coworker Eric Chin recently posed a question on our internal slack channels asking if anyone had experience with Liferay's Batch mode and he was not finding enough supporting documentation on it. Although I hadn't yet worked with Liferay Batch, I kind of took it as a challenge to not only give it a try, but more importantly to document it in a new blog post, so here...

Hey, so a quick post today about how to set up JNDI connections in Liferay CE 7.4 or Liferay DXP 7.4. Liferay moved jars around in 7.4. No longer are there key jars in the Tomcat lib/ext directory (or for other application servers). To set up JNDI resources under 7.4, you'll need to put the necessary JDBC jars into the Tomcat lib directory (or the lib directory of your application server). In...

Introduction So recently I completed a database upgrade from Liferay EE 6.1 up to Liferay DXP 7.4. It was actually pretty straightforward and I didn't encounter any significant blockers. I did however learn some stuff along the way and I thought I'd share those details here so you will be able to do your next Liferay DB upgrade in the same way. Note that although I'm specifically including...

Introduction So I wrote https://liferay.dev/blogs/-/blogs/extending-liferay-osgi-modules five years ago targeting Liferay 7.0. A lot has changed since then. Liferay Gradle Workspace plugin has seen numerous updates. Gradle has seen an update or two as well. Recently when asked to assist a client who wanted to extend Liferay's Journal Article service, I started by recommending they look...

Hey, all! There's a new zero-day vulnerability hitting the web right now, and it is affecting a lot of libraries and applications out there, including Liferay 7.4. Any app using Log4j2 is vulnerable. If you are using Log4j2 in your customizations or you are using Liferay 7.4 (which now uses Log4j2), this new vulnerability affects you. I'm not going to show anything about how to take advantage...

Introduction In a recent blog I explained how to create a React-based portlet within your Liferay Gradle Workspace by using the js-widget Blade template which in turn uses the Yeoman Liferay JS Generator to create the project. (Wow, that was a mouthful ;-) ) In this way, you can have your Liferay Gradle Workspace take care of building your complete suite of Liferay modules, the...

Introduction So when you start building your own fragments and using them on your content pages, you will often times run into an issue with propagation... So I like to create fragments for headers and footers and then use those fragments on every page that I build. But when I update those fragments, I have to go into the usages panel to do the propagation so they all get updated. If you...