Sample Facelet and Servlet for uploading and show images

Sample JakartaEE Maven project for uploading and sharing images or files in general to a persistent location

Features:

• The application shows how to use persistent folders to mantain static contents between application's deployments
• The Servlet/JSP and the Facelets versions allow to upload images to a specific folder and show all uploaded images.
• Files/images folder can be changed in WEB-INF/web.xml
• The application shows to ways of uploading images: using a Servlet ImageUploadServletCtrl or a JSF Controller ImageController
• Images/files can be downloaded (or showed) in two ways:
  1. Option 1 (recommended) From a specific Servlet. Thanks to @BalusC for his work ImageServlet
  2. Option 2 From shared folder (using Payara/Glassfish public folder feature)

Usage instructions

• By default, application place or read images from webimages subfolder on user home folder, e.g. /home/user/webimages (unix) or c:/Users/user/webimages (windows)
• Server must have read/write permissions on this folder
• If you want to change default folder, it must be modified on WEB-INF/web.xml
• Option 1 The application creates the folder specified in WEB-INF/web.xml if not exists and shows/download images from servlet /imagen, e.g./app/imagen/test.jpg. If image does not exist, a default image is shown.
• Option 2 Only can be used with Glassfish/Payara JakartaEE 10 Application Servers.
  • Filesystem destination path and public URL for files must be defined in /WEB-INF/glassfish-web.xml
  • Change new imagePath in web.xml and property imageUrl on Servlet/Controller with the name of the new subfolder, e.g. webimages