SpringMVC上传文件

    /**     * 多文件上传     * @param request     * @param response,     * @return pptName, sharerFileUpType     * @throws IllegalStateException     * @throws IOException     */    public static Map<String, Object> uploadListFiles(HttpServletRequest request, String filePath,boolean isUnique) throws IOException {        Map<String, Object> map = new HashMap<>();        //创建一个通用的多部分解析器          CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());        //判断 request 是否有文件上传,即多部分请求          StringBuffer buffer = new StringBuffer();        String localFileUrl="";        if (multipartResolver.isMultipart(request))        {            //转换成多部分request                MultipartHttpServletRequest multiRequest = (MultipartHttpServletRequest) request;            //取得request中的所有文件名              List<MultipartFile> files=multiRequest.getFiles("files");            //MultipartFile类型的变量file在files集合范围内循环            for(MultipartFile  file:files){                if (file != null)                {                    //取得当前上传文件的文件名称                      String myFileName = file.getOriginalFilename();                    //如果名称不为“”,说明该文件存在，否则说明该文件不存在                      if (myFileName.trim() != "")                    {                        //重命名上传后的文件名                          String fileName = file.getOriginalFilename();                        String absPath = "D:\\media\\ddcrm\\"+filePath;                        new File(absPath).mkdirs();                        String path= absPath + File.separator + fileName;                        if(isUnique){                            String name=path.substring(0, path.lastIndexOf("."));                            String suffix=path.substring(path.lastIndexOf("."), path.length());                            path=name+"_"+System.currentTimeMillis()+suffix;                        }                        File localFile = new File(path);                        file.transferTo(localFile);                        localFileUrl=localFile.toString();                        buffer.append(localFileUrl).append("@");                    }                                   }             }        }        String localFileUrls = buffer.toString();        if (localFileUrls.endsWith("@"))            localFileUrls = localFileUrls.substring(0, localFileUrls.length() - 1);        map.put("code", 200);        map.put("msg", "上传成功");        map.put("localFileUrls", localFileUrls);        return map;    }