<a href="https://stackoverflow.com/questions/17933508/how-to-delete-a-file-after-sending-it-in-a-web-app">https://stackoverflow.com/questions/17933508/how-to-delete-a-file-after-sending-it-in-a-web-app</a>&nbsp;&nbsp;다음과 같이 사용하면 삭제가 된다.&nbsp;&nbsp;<pre style="background-color:#2b2b2b;color:#a9b7c6;font-family:'D2Coding',monospace;font-size:11.3pt;">@GetMapping(value = {"/{sessionId}/csv"}) public ResponseEntity downloadCsv(@PathVariable String sessionId) throws IOException { List&lt;ChatMessage&gt; messageList = chatService.findAll(sessionId); File file = fileService.writeChatMessageCsv(messageList); HttpHeaders headers = new HttpHeaders(); String fileName = MessageFormat.format("chat_{0}.csv", sessionId); headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + new String(fileName.getBytes("UTF-8"), "ISO-8859-1") + "\""); headers.setContentType(MediaType.APPLICATION_OCTET_STREAM); Resource resource = new FileSystemResource(file) { @Override public InputStream getInputStream() throws IOException { return new FileInputStream(file) { @Override public void close() throws IOException { super.close(); Files.delete(file.toPath()); } }; } }; return ResponseEntity.ok().headers(headers).body(resource); }</pre>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

스프링에서 csv, excel(엑셀) 등을 다운로드 할 때 임시로 파일 만들어서 내려주고 다시 삭제하는 방법