Java class extends WCMUse compile error (Only a type can be imported com.adobe.sightly.WCMUse resolves to a pakcage)

If there is no way to use WCMUse in AEM5.6.1, what is the recommended way to implement custom code in AEM 5.6.1? Do I re-implement my Java code in JSP? Or is there other way to trigger Java code in AEM 5.6.1?

You do not need Sightly to invoke a backend Java Service from a component's JSP. WCMUse is only used for Sightly, not for Java services that can be invoked from JSP logic. 

Read this article, it will give you the basics:

com.adobe.cq.KeyService keyService = sling.getService(com.adobe.cq.KeyService.class);
keyService.setKey(10) ; 

See:

https://helpx.adobe.com/experience-manager/using/first-osgi.html

The reason why I create a class that extends WCMUse not only because I want to trigger the Java class via sightly, but also because WCMUse allow me to use getPageManager() and getResourceResolver(), so the Java code can interact with Node in AEM. How do I do that without extending WCMUse in AEM 5.6.1?

Thanks,

Kai

edubey wrote...

These are sightly APIs which were introduced from 6.x onwards.

Although there is feature pack of sightly available in 5.6.1 but that is just to see sightly preview and wont support sightly apis completely

To get code working you need to use AEM 6+, Check release notes here https://docs.adobe.com/docs/en/aem/6-0/release-notes.html

 

The feature pack works in AEM 5.6.1. But I am trying to find a way to implement it without the feature pack. Any suggestion?

As I mentioned earlier sighlty was introduced 6.0 onwards

Sightly API which u are using (WCMUse) will not be available in 5.6.1 and thus you cannot use

You have to use AEM 6+

I understand that, my question is, how do custom Java class interact with AEM node (read, write) prior to AEM 6?

You can write osgi service to read data or java  class

For osgi service alot of articles are available there, do check

http://blogs.adobe.com/kmossman/2012/04/osgi-sling-service-example.html

Can you share an example of Java class creating new node or reading existing node in AEM?

https://helpx.adobe.com/experience-manager/using/programmatically-accessing-cq-content-using.html