动态加载服务器上的图片

<img src="/loadImg?path='xxx'" />

/**
     * IO流读取存在服务器上的图片
     *
     * @return
     * @throws IOException
     */
@RequestMapping(value = "/loadImg", method = RequestMethod.GET)
public void loadImg(@RequestParam("path") String path, HttpServletResponse response) throws IOException {
    //这里省略掉通过id去读取图片的步骤。
    File file = new File(path);//imgPath为服务器图片地址
    if (file.exists() && file.isFile()) {
        FileInputStream in = null;
        OutputStream out = null;
        try {
            in = new FileInputStream(file);
            out = response.getOutputStream();
            int count = 0;
            byte[] buffer = new byte[1024 * 8];// 一次读取1k
            while ((count = in.read(buffer)) != -1) {
                out.write(buffer, 0, count);
                out.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (in != null) {
                in.close();
            }
            if (out != null) {
                out.close();
            }
        }
    }
}