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Reference
Official Documentation
Reference PortletMVC4Spring integrates Spring, the Spring Web Framework, and the MVC design pattern with portlet development. As such, it uses configuration files from each of these areas and...
PortletMVC4Spring Annotations
Official Documentation
PortletMVC4Spring Annotations PortletMVC4Spring provides several annotations for mapping requests to controller classes and controller methods. @RenderMapping Annotation Examples The following...
Creating a Model Listener
Creating a Model Listener Model listeners listen for persistence method calls that signal changes to a specified model (such as update or add methods). Most of the methods model listeners use are...
Creating Service Wrappers
Creating Service Wrappers With Service Wrappers, you can override default service methods to add extra functionality. For example, you may want the value of a field you've added to Liferay's User...
Customizing JSPs with Dynamic Includes
Customizing JSPs with Dynamic Includes The liferay-util:dynamic-include tag is a placeholder into which you can inject content---JavaScript code, HTML, and more. The example project demonstrates...
Generating Translations Automatically
Official Documentation
Generating Translations Automatically Liferay DXP supports 50 languages out-of-the-box. Each locale has its own language properties file containing keys for its language. When you create an...
Overriding Module Language Translations
Overriding Module Language Translations For Liferay DXP 7.4 U4/Portal 7.4 GA8+, the Language Override tool is the recommended approach. Overriding language translations in specific applications...
PortletMVC4Spring Configuration Files
Official Documentation
PortletMVC4Spring Configuration Files A PortletMVC4Spring application has these descriptors, Spring contexts, and properties files in its WEB-INF folder: web.xml → Web application descriptor ...
PortletMVC4Spring Project Anatomy
Official Documentation
PortletMVC4Spring Project Anatomy PortletMVC4Spring portlets are packaged in WARs. Liferay provides Maven archetypes for creating projects configured to use JSP/JSPX and Thymeleaf templates. Their...
Extending Liferay
Official Documentation
Extending Liferay Liferay DXP/Portal is highly customizable. Its modular architecture contains components you can extend and override dynamically using APIs.
Adding a Language
Official Documentation
Adding a Language Liferay ships with over 50 languages out-of-the-box. Translation is complete for many of these languages, and some are still in the translation process. Each language has its own...
Customizing Localization
Official Documentation
Customizing Localization Liferay ships with 55 translations, making it ideal for deployments all over the world. Sometimes, however, you must modify a translation or provide a new one. Here you can...
Overriding Global Language Translations with Language Properties
Overriding Global Language Translations with Language Properties Liferay DXP/Portal implements headings, labels, and messages for many locales using language translations. You can override these...
Overriding OSGi Services
Overriding OSGi Services Liferay's OSGi container is a dynamic environment in which services can be added, removed, or overridden as needed. This framework registers Liferay components with the...
Using Portlet Filters
Using Portlet Filters Portlet filters intercept requests and responses at the start of each portlet request processing phase so you can add functionality there. This makes them useful for auditing...
Waiting for Life Cycle Events
Waiting for Life Cycle Events Liferay registers life cycle events like portal and portlet initialization into the OSGi service registry. Your OSGi classes can listen for these service registrations...
Fundamentals
Official Documentation
Fundamentals Liferay development projects consist primarily of simple .jar files. These contain a few extra configuration files that make them OSGi modules, but they're easily understandable by...
Overriding JSPs
Overriding JSPs You can override JSPs completely using OSGi fragments. This approach is powerful but can make things unstable when the host module is upgraded. By overriding an entire JSP, you...
Using Servlet Filters
Using Servlet Filters Servlet filters can both pre-process requests as they arrive and post-process responses before they go to the client browser. You can apply functionality to requests and...
APIs as OSGi Services
Official Documentation
APIs as OSGi Services After you've learned what a module is and how to deploy one, you can use modules to define APIs and implement them. Liferay APIs are OSGi services, defined by Java interfaces...
Architecture
Official Documentation
Architecture The Liferay DXP/Portal architecture has three parts: Core: Bootstraps DXP and its frameworks. The Core provides a runtime environment for managing services, UI components, and...
Module Life Cycle
Module Life Cycle In OSGi, all components, Java classes, resources, and descriptors are deployed via modules (OSGi bundles). The MANIFEST.MF file describes the module's physical characteristics,...
The Benefits of Modularity
The Benefits of Modularity Dictionary.com defines modularity as the use of individually distinct functional units, as in assembling an electronic or mechanical system. The distinct functional units...
Finding Artifacts
Official Documentation
Finding Artifacts To use external artifacts in your project, you must configure their dependencies in your build.gradle Gradle script. Before specifying an artifact as a dependency, you must first...
Configuring Dependencies
Official Documentation
Configuring Dependencies Liferay provides a container where modules can publish and consume functionality through their Java packages. Modules can leverage packages from other modules or...
Deploying WARs (WAB Generator)
Official Documentation
Deploying WARs (WAB Generator) You can create applications as Java EE-style Web Application ARchive (WAR) artifacts or as Java ARchive (JAR) OSGi bundle artifacts. Bean Portlets, PortletMVC4Spring...
Bundle Classloading Flow
Bundle Classloading Flow The OSGi container searches several places for imported classes. It's important to know where it looks and in what order. Liferay DXP's classloading flow for OSGi bundles...
Liferay Classloader Hierarchy
Liferay Classloader Hierarchy All Liferay DXP/Portal applications live in an OSGi container. DXP/Portal is a web application deployed on your application server. Its Module Framework bundles...
OSGi and Modularity
OSGi and Modularity Modularity makes writing software, especially as a team, fun! Here are some benefits to modular development on Liferay: Liferay's runtime framework is lightweight, fast, and...
Resolving Third Party Library Package Dependencies
Official Documentation
Resolving Third Party Library Package Dependencies An application can rely on multiple OSGi modules. Resolving their Java package dependencies can be challenging. In a perfect world, every package...
Specifying Dependencies
Official Documentation
Specifying Dependencies You must satisfy all dependencies to compile and deploy a module successfully. After you find the dependency artifacts, add them as dependencies in your Gradle build file....
Module Projects
Official Documentation
Module Projects Liferay applications and customizations are OSGi modules: .jar files containing Java code and some extra configuration for publishing and consuming APIs. A module project comprises...
Exported Third Party Packages
Official Documentation
Exported Third Party Packages Liferay provides over one-hundred third party Java packages at run time. The com.liferay.portal.bootstrap module exports the packages by specifying individual packages...
JARs Excluded from WABs
Official Documentation
JARs Excluded from WABs [Liferay-generated web application bundles (WABs) are stripped of third party JARs that contain packages that Liferay exports already. Deploying the same third party...
Exporting Packages
Official Documentation
Exporting Packages In OSGi, packages are private by default. You must explicitly exporting a package so other modules can import and use them. Here's how to export packages: Open your bnd.bnd...
Importing Packages
Official Documentation
Importing Packages You often find yourself in a position of needing functionality provided by another module. To access this functionality, you must import packages from other modules into your...
Gogo Shell Commands
Official Documentation
Gogo Shell Commands The Gogo shell executes Felix Gogo basic commands and Liferay commands. The Gogo shell is accessible in the Control Panel (recommended) and from the command line. Here are some...
Command Line Gogo Shell
Official Documentation
Command Line Gogo Shell If you're in a development environment, you can interact with the module framework locally from the command line. Gogo shell should only be run from the command line in...
Semantic Versioning
Official Documentation
Semantic Versioning Semantic Versioning is a three tiered versioning system for incrementing version numbers based on the degree of API change made in a releasable software component. It's a...
Adaptive Media Modules Reference
Official Documentation
Adaptive Media Modules Reference Adaptive Media's Modules Some modules in the Adaptive Media app are mandatory and must be enabled for Adaptive Media to function, while others can be disabled. The...
DevOps
Official Documentation
DevOps :::: 2 :gutter: 3 3 3 3 ::: Local Integrations Configuring Documents and Media Previews Enabling Antivirus Scanning for Uploaded Files Configuring Cache Control for Documents and Media...
Configuring Caching for Documents and Media
Official Documentation
Configuring Caching for Documents and Media Liferay 7.3 U23+, Liferay 7.4 U21+, GA21+ By default, Documents and Media files are not cached by browsers or servers. This is because file visibility...
Enabling Document Creation and Editing with Microsoft Office 365
Official Documentation
Enabling Document Creation and Editing with Microsoft Office 365 Liferay DXP integrates with Microsoft Office 365™ so you can create and edit documents, spreadsheets, and presentations stored in...
Using an OSGi Service
Official Documentation
Using an OSGi Service Liferay APIs are readily available as OSGi services. You can access a service by creating a field of that service type and annotating the field with @Reference, like this: ...
Using the Gogo Shell
Official Documentation
Using the Gogo Shell The Gogo shell provides a way to interact with the module framework. Among other things, you can Dynamically install/uninstall bundles (modules) Examine package...
Digital Asset Management
Official Documentation
Digital Asset Management Use Liferay’s Digital Asset Management (DAM) features to store, organize, and reuse documents, images, and other media across your site. The Documents and Media library...
Developer Guide
Official Documentation
Developer Guide This guide provides comprehensive information and references to help you effectively use the Document API, understand adaptive media modules, and create video shortcut providers.
Creating Video Shortcut Providers
Official Documentation
Creating Video Shortcut Providers Liferay DXP 7.4+ By default, Liferay's external video shortcuts support YouTube, Vimeo, Facebook, and Twitch. However, you can extend this feature to support...
Configuring Documents and Media Previews
Official Documentation
Configuring Documents and Media Previews Liferay 7.4 U84+/GA84+ By default, Liferay uses PDFBox to generate previews for files added to the document library. This is because PDFBox is the only...
Enabling FFmpeg for Audio and Video Previews
Official Documentation
Enabling FFmpeg for Audio and Video Previews Documents and Media provides integration with the FFmpeg multimedia framework for generating audio and video file previews. To use this integration, you...
Enabling LibreOffice / OpenOffice Integration
Official Documentation
Enabling LibreOffice / OpenOffice Integration LibreOffice and OpenOffice are open source productivity suites that you can integrate with Liferay. By default Liferay includes PDFBox, which generates...
Enabling Document Creation and Editing with Google Drive
Official Documentation
Enabling Document Creation and Editing with Google Drive Liferay DXP provides integration with Google Drive so you can create and edit Google Docs, Sheets, and Slides via the Documents and Media...
Google Drive Integration
Official Documentation
Google Drive Integration Integrate Google Drive with Liferay DXP to create, edit, and manage Google Docs, Sheets, and Slides directly from Documents and Media. This integration provides two main...
Enabling Links to Google Drive Documents
Official Documentation
Enabling Links to Google Drive Documents Liferay supports Google Drive in Documents and Media. When enabled, you can create shortcuts to your Google Drive files that enable you to view and manage...
SharePoint Integration
Official Documentation
SharePoint Integration Integrate SharePoint with Liferay DXP for managing SharePoint libraries within Documents and Media. Create and manage repositories that mount SharePoint libraries, and...
Documents and Media UI Reference
Official Documentation
Documents and Media UI Reference The Documents and Media application is used to store, view, and manage files for your Liferay DXP instance. It's available in all sites and can be enabled for asset...
Documents and Media
Official Documentation
Documents and Media The Documents and Media application stores and manages files in your Liferay instance. This includes files uploaded directly to Documents and Media, as well as those uploaded in...
Generating Images Using AI
Official Documentation
Generating Images Using AI Liferay DXP 2024.Q2+/Portal GA120+ The Documents and Media application provides integration with OpenAI's ChatGPT engine using the AI Creator tool. With an OpenAI API...
Documents and Media Permissions Reference
Official Documentation
Documents and Media Permissions Reference Liferay 7.4 U76+/GA76+ Manage access to Documents and Media assets using application and resource permissions. With role-based access control, you can...
Managing Document Access
Official Documentation
Managing Document Access Effectively managing document access in Liferay ensures that your organization’s data remains secure while being accessible to the right users. Control document access by...