Spring2.5上传文件-优快云博客

controller:

@RequestMapping("/bannerAd/create.do")
    public String create(HttpServletRequest request, @RequestParam("bannerFile") MultipartFile bannerFile ) throws Exception {
        if (!isLoggedIn(request)){
            return "redirect:/logout.do";
        }
        String fileName = "";
        if (bannerFile != null && !bannerFile.isEmpty()) {
            String uploadPath = request.getSession().getServletContext().getRealPath("/upload/banners");
            fileName = UploadUtils.uploadFile(bannerFile, uploadPath);
        }

        BannerAdDTO bannerAd = new BannerAdDTO();
        bannerAd.setFileUrl(fileName);
         ..........................
        bannerAdService.createBannerAd(bannerAd);

        return "redirect:/bannerAd/list.do";
    }

Jsp:

<form id="formBannerAd" method="post" enctype="multipart/form-data" action="<c:url value='/bannerAd/create.do'/>">
            <dl>
                <dt>
                    <label for="bannerFile">Banner File : </label>
                </dt>
                <dd>
                    <input id="bannerFile" name="bannerFile " type="file"/>
                </dd>
                ..............................

            </dl>
            <div class="buttons">
                <input type="button" value="Create" οnclick="save();"/>
                <input type="button" value="Cancel" οnclick="#"/>
            </div>
        </form>

upload util:

public static String uploadFile(MultipartFile cFile, String uploadPath) throws Exception {
        Assert.notNull(cFile, "cFile must not be null");
        Assert.notNull(uploadPath, "moduleName must not be null");

        String result = "";
        if (cFile != null) {
            if (!fileExists(uploadPath)) {
                makePath(uploadPath);
            }
            String fileName = generateFileName(cFile.getOriginalFilename());
            String fullName = uploadPath + File.separator + fileName;
            DataOutputStream out = new DataOutputStream(new FileOutputStream(fullName));
            InputStream is = null;

            try {
                is = cFile.getInputStream();
                byte[] buffer = cFile.getBytes();
                while (is.read(buffer) > 0) {
                    out.write(buffer);
                }
                result = fileName;
            } catch (IOException e) {
                e.printStackTrace();
                return "";
            } finally {
                if (null != is) {
                    is.close();
                }
                if (null != out) {
                    out.close();
                }
            }
        }
        return result;
    }