医院信息化建设：统一消息平台与下载功能实现

public ResponseEntity sendMessage(@RequestBody Message message) {

// 存储消息到数据库

messageService.saveMessage(message);

return new ResponseEntity<>("Message sent successfully", HttpStatus.OK);

}

public ResponseEntity downloadMessages(@PathVariable("type") String type) throws IOException {

InputStreamResource resource = new InputStreamResource(messageService.downloadMessages(type));

HttpHeaders headers = new HttpHeaders();

headers.add(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=messages.csv");

return ResponseEntity.ok()

.headers(headers)

.contentLength(messageService.getMessageCount(type))

.contentType(MediaType.parseMediaType("text/csv"))

.body(resource);

}