Converting AEM/Sling Resources to JSON

Adobe Experience Manager | AEM/CQ | Apache Sling

Converting AEM/Sling Resources to JSON

You can easily convert an AEM Page, Sling Resource, or JCR Node to JSON using the org.apache.sling.commons.json.jcr.JsonItemWriter class. This simply but useful utility allows you to dump a Node into a JSONObject. It also allows you to dump the Node into a JSON string into a PrintWriter for use in servlets for example.

The constructor accepts a Set of Strings representing JCR properties to exclude from the JSON output. You may want to ignore the standard cq:*, sling:* and jcr:* properties while allowing only your custom properties to populate the JSON.

The overloaded dump methods allow you to pass in the recursion level similar to how you would use a selector when making AJAX calls to the Default Get Servlet. Just as you can cURL /content/geometrixx/en.json, /content/geometrixx/en.1.json and /content/geometrixx/en.-1.json, you can pass in a positive integer for the recursion level as well as -1 for infinite recursion.

Likewise, just as you can cURL /content/geometrixx/en.tidy.json, you can specify whether you want the JSON output nicely formatted or not.

The following examples demonstrate the JsonItemWriter utilizing a PrintWriter in a servlet and a JSONObject in a standard Java class.




1 comment

sudhanshu Sharma | June 14, 2017 at 06:39 AM | Reply

Very nice explanation and great piece of knowledge. Thanks alot.

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