Java uses streaming to download files

    Public httpservletresponse Download (String path, httpservletresponse response) {try {//path = download            The path to the file.            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 ()));            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 ();    } return response; }

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Java uses streaming to download files