异步的多文件上传和文件存储代码
这一段代码是在工作之余自己练手玩的代码，因为不喜欢引入别人的js，就自己写一个jsp的页面，以后可以重用，界面上是达不到商业软件的标准了，但是功能还是实现了的。
这个异步的多文件上传初衷是为了上传图片，所以有个预览图这一栏。
/** * 图片上传 * @param request * @param response * @throws ServletException * @throws IOException */private void imgUpload(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String fileType = request.getParameter("fType");BufferedInputStream fin = new BufferedInputStream(request.getInputStream());//生成随机文件名String fileName = uuid.generate() + fileType;//path是本地路径String path = getURI() + "/uploadFolder/" + fileName;//uploadBasePath是从前台页面拿到的网页路径String uploadBasePath = request.getParameter("uploadBasePath");String imgAlt = request.getParameter("imgAlt");if(null != uploadBasePath && imgAlt != null){//url拼接出来以后是http://xxx.xxx.xxx/smdtx/uploadFolder/xxxx.jpgString url = uploadBasePath + "uploadFolder/" + fileName;PrintWriter out = response.getWriter();if(saveFile(fin,path)){//成功了就返回url给jsp页面Image img = new Image();img.setUrl(url);img.setAlt(imgAlt);try{imgDao.add(img);out.write(url);out.flush();}catch(Exception e){mLog.error(" method imgUpload() catch exception by " + e.getMessage());e.printStackTrace();}finally{if(out != null){out.close();}}}else{try{out.write("false");out.flush();}catch(Exception e){mLog.error(" method imgUpload() catch exception by " + e.getMessage());e.printStackTrace();}finally{if(out != null){out.close();}}}}}/** * 保存文件到本地 * @param in 输入流 * @param path 保存地址 * @return boolean 成功标识 * @throws IOException */private boolean saveFile(InputStream in,String path) throws IOException{File file = new File(path);byte[] buff = new byte[1024];int buffLength = -1;OutputStream out = null;boolean result = false;try{out = new FileOutputStream(file);while((buffLength = in.read(buff)) != -1){out.write(buff, 0, buffLength);}result = true;}catch(Exception e){mLog.error(" method saveFile() catch exception by " + e.getMessage());e.printStackTrace();}finally{if(out != null){out.close();}}return result;}大概就是这个样子。自己有一个疑问，为什么最后一个file路径返回了多次？希望有经验的朋友能够留言解惑。