Liferay JSP Hook

Liferay JSP hooks are used to override  JSP,  java script, images etc.Lets create a simple jsp hook that override login.jsp from Liferay core JSP’s.

All web resource Hook configuration will in in custom-jsp-dir in liferay-hook.xml file like below:

<hook>
 <custom-jsp-dir>/custom_jsps</custom-jsp-dir>
</hook>

1. create hook plugin : In IDE, File -> New -> Liferay Plugin Project and select plugin type as Hook. 
2. In eclipse, login-hook is created. right click on the project and select New -> File -> Liferay Hook Configuration
   • select Custom JSP’s from the Hook Types
   • click on Next
     
3. In this wizard, we can add the JSP’s file to override.
   • Click on Add from Liferay
   • search for login and login.jsp.  All JSP’s are listed are html/portal or html/portlet folders.
   • click Ok and click on Finish
4. Now it will create below project structure and add custom jsp entry to liferay-hook.xml file
   • liferay-hook.xml file

     •  <hook>
        <custom-jsp-dir>/custom_jsps</custom-jsp-dir>
       </hook>

     • 
5. Edit the login.jsp and deploy the login hook
6. After deploying, It will rename the original login.jsp to login.jsp.portal and this new file will be loaded in the browser.