File Download implementation

Java code:

@RequestMapping (value = "/download") @ResponseBodypublic void Download (HttpServletRequest request, HttpServletResponse response) throws FileNotFoundException {//Get server-side file save path string realpath = Request.getsession (). Getservletcontext (). Getrealpath ("/");            String Path = realpath+ "file. txt";//download try {//path refers to the path of the file to download.            File File = new file (path);            Gets the file name.            String filename = File.getname ();            Gets the suffix name of the file.            String ext = filename.substring (Filename.lastindexof (".") + 1). toUpperCase ();            Download the file in the form of a stream.            InputStream fis = new Bufferedinputstream (new FileInputStream (path));            byte[] buffer = new byte[fis.available ()];            Fis.read (buffer);            Fis.close ();            Empty response Response.reset (); Set Response header Response.AddHeader ("Content-disposition", "attachment;filename=" + New String (filename.get            Bytes ("gb2312"), "iso8859-1"); Response.AddHeader ("Content-length "," "+ file.length ());            OutputStream toclient = new Bufferedoutputstream (Response.getoutputstream ());            Response.setcontenttype ("Application/octet-stream");            Toclient.write (buffer);            Toclient.flush ();        Toclient.close ();        } catch (IOException ex) {ex.printstacktrace (); }}

Request Method:

Window.location.href = encodeURI ("Forecast/download");

This does not use a tag to request directly in the JS call can

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File Download implementation