page doRender interception for Auto SEO

[enrico zanchetta, módosítva 11 év-val korábban]

I have to set automatically the keywords of the web content for SEO.
I would read the first lines of each web content and call:

PortalUtil.addPageKeywords ("keyword1 webcontent1, keyword2 webcontent2", PortalUtil.getHttpServletRequest (renderRequest));
PortalUtil.addPageDescription ("desc webconten1 desc webcontent2 desc", PortalUtil.getHttpServletRequest (renderRequest));

to each page load.

What is the point where it is loading the page? On liferay is a system similar to where I can intercept methods doRender addPageDescription?