Controller

@RequestMapping(value = "/down/{uuid}", method = RequestMethod.GET)
  @ResponseBody
  public void downloadImage(@PathVariable("uuid") final String uuid, HttpServletResponse response) {
    flService.downImage(uuid, response);
  }

service

	void downImage(String uuid, HttpServletResponse response);

serviceImpl

@Override
	public void downImage(String uuid, HttpServletResponse response) {
		//response.setHeader("Content-Disposition", "attachment;fileName=" + "asdf.jpg"); //下載
		response.setContentType("image/png");//顯示
		String realPath = "C:\\Users\\Public\\Pictures\\Sample Pictures\\asdf.jpg";
		InputStream fileInputStream;
		try {
			fileInputStream = new FileInputStream(realPath );
			OutputStream outputStream = response.getOutputStream();
			IOUtils.copy(fileInputStream, outputStream);
			outputStream.close();
			fileInputStream.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

實現文件下載

response.setHeader("Content-Disposition", "attachment;fileName=" + "asdf.jpg");

實現文件在瀏覽器顯示

response.setContentType("image/png");

二、如果在同一臺主機，可以將url給對方，通過nginx代理的方式訪問。

springmvc實現圖片下載以及在瀏覽器顯示