HI Dhaval;
Why are you running this url directly in the browser.
This is the url for fetching the count of number of pending PO approvals.
It is coming in this format because by default XML is getting displayed so.
add "?$format=json" in the end of the url to get json output.
http://<hostname>:8000/sap/opu/odata/sap/gbapp_poapproval;mo/LaunchPageCollection?$format=json
Regards,
Sarbjeet SIngh