I want to know how to integrate a Java web application with OpenCms contents. Is it possible to integrate a Java application with OpenCms?
3 Answers
Yes, it's possible. For example you can integrate SpringMVC or Struts into OpenCms, or other tools like JForum, an open source java forum, which also supports single-sign-on (SSO).
You can find information here & a small sample OpenCms+Spring integration project:
Since OpenCms is open source and based on Java EE standards, you are pretty free.

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See my answer and update at http://stackoverflow.com/questions/13490509/what-java-based-cms-can-manage-existing-pages-content, it has the current url. – Mathias Conradt Jan 30 '13 at 01:47
What I have done successfully is to create a jstl tag library to connect JSPs in OpenCms to a business backend.
In my case it was done through a SOAP web-service.
Another advantage of this was that I could test and develop my code in Eclipse, without a dependency on OpenCms.
Deploying to production would then mean to deploy a jar file to the OpenCms webapp.
Yet another advantage: Since we put some of the view-logic into the OpenCms-hosted JSPs, they were versioned by OpenCms.

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We have integrated SprigMVC into an existing OpenCMS installation. Here is a description of how we went about that: http://blog.shinetech.com/2013/04/09/integrating-springmvc-with-opencms/

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