LoadImageController.java 文件源码

/**
 *
 *
 * @param request
 * @return
 * @throws Exception
 */
@RequestMapping("/upload")
public String upload(HttpServletRequest request, HttpServletResponse response, @RequestParam("file") MultipartFile file) throws Exception {
    ServletContext sc = request.getSession().getServletContext();
    String dir = sc.getRealPath("/upload");
    String type = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")+1, file.getOriginalFilename().length());

    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
    Random r = new Random();
    String imgName = "";
    if (type.equals("jpg")) {
        imgName = sdf.format(new Date()) + r.nextInt(100) + ".jpg";
    } else if (type.equals("png")) {
        imgName = sdf.format(new Date()) + r.nextInt(100) + ".png";
    } else if (type.equals("jpeg")) {
        imgName = sdf.format(new Date()) + r.nextInt(100) + ".jpeg";
    } else {
        return null;
    }
    FileUtils.writeByteArrayToFile(new File(dir, imgName), file.getBytes());
    response.getWriter().print("upload/" + imgName);
    return null;
}