如何在Spring MVC Rest控制器中返回二进制数据而不是base64编码的byte []

我使用您的代码创建了示例，但是非常相似的方法正在Web应用程序中完成他的工作：

@RequestMapping(value = "/", method = RequestMethod.GET)public void downloadFile(HttpServletResponse response,   HttpServletRequest request) throws IOException{    byte[] pdf = createPdf();    response.setContentType("application/x-download");    response.setHeader("Content-Disposition", "attachment; filename=foo.pdf");    response.setHeader("Pragma", "no-cache");    response.setHeader("Cache-Control", "no-cache");    response.getOutputStream().write(pdf);}