Spring Java get webapp file path

    @RequestMapping ("/act/worldcup_schedule_time/imgdownload") @ResponseBody public String scheduledownload (httpserv        Letrequest request, HttpServletResponse response, HttpSession session) {response.setcharacterencoding ("UTF-8");        String downloadname = "Worldcup.jpg";        InputStream input = null;            try {request.setcharacterencoding ("UTF-8"); Gets the path of the file//String URL = Session.getservletcontext (). Getrealpath ("/") + "Resources\\images\\act\\worldcup_merge            \\worldcup720.png ";            String URL = session.getservletcontext (). Getrealpath ("/") + "resources/images/act/worldcup_merge/worldcup720.png";            System.out.println (URL);            File File = new file (URL);            input = Fileutils.openinputstream (file);            byte[] data = Ioutils.tobytearray (input);            SYSTEM.OUT.PRINTLN ("FileName:" +downloadname);            Response.reset (); Sets the header information for the response (Chinese problem resolution) Response.setheader ("Content-dispOsition "," attachment;filename= "+ urlencoder.encode (downloadname," UTF-8 "));            Response.AddHeader ("Content-length", "" "+ data.length); Response.setcontenttype ("image/png;            Charset=utf-8 ");        Ioutils.write (data, Response.getoutputstream ());            } catch (Exception e) {logger.error ("error downloading picture");            if (input! = null) {ioutils.closequietly (input);    }} return null; }

　　

Spring Java get webapp file path