Every Joget resource has a hash variable you can use (#appResource.id#) see screenshot below:

I am getting the only path of the resource item using the hash variable but I want to read data from the JSON file in beanshell. like below - 

Try using absolute URL first to check its working correctly. Then you can use Hash Variable, it will help to avoid any gap in hash variable usage. 

In addition, for testing only try removing permission.  

Thanks for replying,

Initially, I tried using the absolute path and the path was referring to the folder outside of the Joget setup folder on the server. and I was able to read JSON file content.

but due to some security reasons, I need to implement the authentication for API (JSON file) while accessing the JSON inside Beanshell. that's why I placed the JSON file in the resources section (with the thought that the JSON file would use the browser authentication)

 and accessed through Beanshell but was not able to read the file content.

My problem statement is simple - I need to read the content of the JSON file (in Beanshell). The JSON file is available on the server where Joget has been set up.