Data not get displayed in struts2 - jquery grid

I'm using struts2-jquery grid.

gridmodel in my action class is getting updated correctly. But, nothing is getting displayed on the grid.

struts.xml



userList.jsp



ListUsers.java



I did refer to the solution on http://stackoverflow.com/questions/6411589/struts2-jquery-grid-data-not-load?answertab=active#tab-top

But that solution did not work. Instead of data getting displayed on the grid, it prompted to save the file & that file contained the following info:

{"JSON":"success","gridModel":[{"email":"[email protected]","fullName":"User ABC","id":1,"userName":"user1"},{"email":"[email protected]","fullName":"User DEF","id":1,"userName":"user2"}],"page":0,"record":2,"rows":0,"sidx":null,"sord":null,"total":2147483647}

As per my understanding row & page are automatically handled by the plugin. But as per the json data above they are not getting incremented. Hard-coded them to the size of the gridmodel and the json data I got is:

{"JSON":"success","allApplicationData":"success","gridModel":[{"email":"[email protected]","fullName":"User ABC","id":1,"userName":"user1"},{"email":"[email protected]","fullName":"User DEF","id":1,"userName":"user2"}],"page":1,"record":2,"rows":2,"sidx":null,"sord":null,"total":1}

Thanks,
Shikha