如何在AJAX请求成功响应中返回文件时打开PDF文件

I get 2 dates, start and end date, via AJAX. I process the data b/w those 2 dates, generate a report and then returns an HttpResponse. The PDF report is now saved in my main project directory. Now I get a response back in AJAX. So, now how should I process the response in the success function, sent back from the sever and open a PDF file.I get 2 dates, start and end date, via AJAX. I