Java 上传文件

上传文件

    @ResponseBody
    @RequestMapping("/doAdd")
    public Object doAdd(HttpServletRequest request, Advert advert, HttpSession session) {
        AjaxResult result = new AjaxResult();
        try {
            MultipartHttpServletRequest mreq = (MultipartHttpServletRequest) request;

            MultipartFile mfile = mreq.getFile("advpic");

            String name = mfile.getOriginalFilename();//java.jpg
            String extname = name.substring(name.lastIndexOf(".")); // .jpg

            String iconpath = UUID.randomUUID().toString() + extname; //232243343.jpg

            ServletContext servletContext = session.getServletContext();
            String realpath = servletContext.getRealPath("/pics");

            String path = realpath + "\\adv\\" + iconpath;

            mfile.transferTo(new File(path));

            User user = (User) session.getAttribute(Const.LOGIN_USER);
            advert.setUserid(user.getId());
            advert.setStatus("1");
            advert.setIconpath(iconpath);

            int count = advertService.insertAdvert(advert);
            result.setSuccess(count == 1);
        } catch (Exception e) {
            e.printStackTrace();
            result.setSuccess(false);
            result.setMessage(e.getMessage());
            System.out.println(e.getStackTrace());
        }
        return result;
    }

html

                    <form id="advertForm" method="post" action="" enctype="multipart/form-data">
                        <div class="form-group">
                            <label for="name">广告名称label>
                            <input type="text" class="form-control" id="name" name="name" placeholder="请输入广告名称">
                        div>
                        <div class="form-group">
                            <label for="url">广告地址label>
                            <input type="text" class="form-control" id="url" name="url" placeholder="请输入广告地址">
                        div>
                        <div class="form-group">
                            <label for="advpic">广告图片label>
                            <input type="file" class="form-control" id="advpic" name="advpic" placeholder="请输入广告图片">
                        div>
                        <button id="saveBtn" type="button" class="btn btn-success"><i
                                class="glyphicon glyphicon-plus">i> 新增
                        button>
                        <button type="button" class="btn btn-danger"><i class="glyphicon glyphicon-refresh">i> 重置
                        button>
                    form>

javascript