Multiple instances of same servlet event listeners can be registered when specified via TLD

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP GA1, 7.0.0 DXP FP57, 7.1.10 DXP GA1, 7.1.10 DXP FP1, Master
• Fix Version/s: 7.0.0 DXP FP59, 7.0.0 DXP SP9, 7.0.X, 7.1.10 DXP FP3, 7.1.1 CE GA2, 7.1.10.1 SP1, 7.1.X, Master
• Component/s: Core Infrastructure > Wab Extender, Core Infrastructure > Wab Generator
• Labels:
  • liferay-dxp-70-sp9
  • liferay-dxp-71-sp1
  • liferay-fixpack-de-59-7010
  • liferay-fixpack-dxp-3-7110
• Branch Version/s:
  7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Story Points: 0.25
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/63372

Steps to reproduce:

1. Download the attached portlet, unzip it, and build it:

   unzip ~/Download/jsp-war-portlet.zip && cd jsp-war-portlet && mvn clean package
   

2. Deploy the WAR to Liferay Portal:

    cp target/*.war $LIFERAY_HOME/deploy/.
   

If the bug still exists, you'll see two instances of contextInitialized() in the logs indicating that two instances of TestContextListener were created:

2018-09-20 16:09:54.064 FATAL [fileinstall-/home/kylestiemann/Portals/liferay.com/liferay-dxp-digital-enterprise-7.0-sp7/osgi/war][TestContextListener:33] __!!!! com.liferay.blade.samples.portlet.TestContextListener@3c0fdca1 contextInitialized()__ [Sanitized]
2018-09-20 16:09:54.077 FATAL [fileinstall-/home/kylestiemann/Portals/liferay.com/liferay-dxp-digital-enterprise-7.0-sp7/osgi/war][TestContextListener:33] __!!!! com.liferay.blade.samples.portlet.TestContextListener@37638d2c contextInitialized()__ [Sanitized]

If the bug is fixed, only one instance of contextInitialized() will appear in the logs:

2018-09-20 16:09:54.077 FATAL [fileinstall-/home/kylestiemann/Portals/liferay.com/liferay-dxp-digital-enterprise-7.0-sp7/osgi/war][TestContextListener:33] __!!!! com.liferay.blade.samples.portlet.TestContextListener@37638d2c contextInitialized()__ [Sanitized]

This problem does not occur in Liferay 6.2.