java文件上传（单文件 多文件）与删除

/*** 文件上传--单文件* * @param request* @param response* @param path* 文件存放路径（path为WebApp/后面的内容）* @return*/public final static String fileUpload(HttpServletRequest request,HttpServletResponse response, String path) {MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();MultipartFile mFile = null;for (Iterator<?> i = fileMap.keySet().iterator(); i.hasNext();) {Object obj = i.next();mFile = (MultipartFile) fileMap.get(obj);}String filePath = "";SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");try {// 得到上传的文件的文件名String filename = mFile.getOriginalFilename();// 获取文件后缀名if (filename != null && !("").equals(filename)) {String fileExt = filename.substring(filename.lastIndexOf("."));// 按时间格式重新生成文件名String newFileName = sdf.format(new Date())+ (int) (Math.random() * 100) + fileExt;filePath = path + "/" + newFileName;// 得到上传服务器的物理路径path = request.getSession().getServletContext().getRealPath("//" + path);// 文件流写到服务器端File saveFile = new File(path, newFileName);FileCopyUtils.copy(mFile.getBytes(), saveFile);}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return filePath;}/*** 文件上传--多文件* * @param request* @param response* @param filePaths* （fileinputId，WebApp/后面的内容）* @return*/public final static Map<String, Object> fileUploads(HttpServletRequest request, HttpServletResponse response,String path) {MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();Map<String, Object> filePaths = new HashMap<String, Object>();// 得到上传服务器的物理路径String fileUrl = request.getSession().getServletContext().getRealPath("//" + path);for (Iterator<?> i = fileMap.keySet().iterator(); i.hasNext();) {Object obj = i.next();MultipartFile mFile = (MultipartFile) fileMap.get(obj);// 得到上传的文件的文件名String filename = mFile.getOriginalFilename();if (filename == "" || filename == null) {continue;}SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");// 获取文件后缀名String fileExt = filename.substring(filename.lastIndexOf("."));// 按时间格式重新生成文件名String newFileName = sdf.format(new Date())+ (int) (Math.random() * 100) + fileExt;String filePath = path + "/" + newFileName;// 文件流写到服务器端try {filePaths.put(obj.toString(), filePath);File saveFile = new File(fileUrl, newFileName);FileCopyUtils.copy(mFile.getBytes(), saveFile);} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}return filePaths;}/*** 删除文件，* * @param request请求* @param filePath文件路径* (static/upload/...)* @return*/public static boolean fileDelete(HttpServletRequest request, String filePath) {String fileUrl = request.getSession().getServletContext().getRealPath("//" + filePath);// 得到上传服务器的物理路径File file = new File(fileUrl);fileDelete(file);return false;}