// 文件的下载 @RequestMapping("download") public ResponseEntity<byte[]> download() throws IOException { File file = new File("d:/PLSQLDeveloper.zip"); HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_OCTET_STREAM); headers.setContentDispositionFormData("attachment", "dict.txt"); headers.setContentLength(file.length()); return new ResponseEntity<byte[]>( FileUtils.readFileToByteArray(file), headers, HttpStatus.CREATED); }