Spring MVC resposeentity Download file

Download the file in Spring MVC in responseentity mode as follows:

@RequestMapping ("/download") public responseentity<byte[]> Download (httpservletrequest request, @RequestParam ("FileName") String fileName) throws IOException {        string path = Request.getservletcontext (). Getrealpath ("/uploadimages/");        File Dwfile = new file (path+file.separator+filename);        Httpheaders headers = new Httpheaders ();        Download the displayed Chinese name, solve the Chinese name garbled problem        String downloadfilename = new String (Filename.getbytes ("UTF-8"), "iso-8859-1");        Application/octet-stream: Binary stream data        headers.setcontentdispositionformdata ("attachment", downloadfilename);        Headers.setcontenttype (mediatype.application_octet_stream);        return new Responseentity<byte[]> (Fileutils.readfiletobytearray (dwfile), headers, httpstatus.created);}    }

　　

Spring MVC resposeentity Download file