前台页面：

                                <div class="form-group">
                                    <label>添加商品图片</label>
                                    <input type="file" id="file" name="file" accept="image/*"
                                           class="file-upload-default">
                                    <div class="input-group col-xs-12">
                                        <input type="text" id="filename" name="filename" id="product_pic"
                                               name="product_pic" class="form-control file-upload-info" 
                                               disabled placeholder="请导入图片路径">
                                        <span class="input-group-append">
                                        <input id="btn_addPic" class="file-upload-browse btn btn-gradient-primary" 
                                               type="button" value="添加"></input>
                                        </span>
                                    </div>
                                </div>

Ajax提交：

function uploadpic() {
    var formData = new FormData();
    formData.append('myfile', $('#file')[0].files[0]);//序列化图片值
    $.ajax({
        async: false,//要求同步 不是不需看你的需求
        url : "/generalManager/addProductPic",
        type : 'POST',
        data : formData,
        processData : false,  //必须false才会避开jQuery对 formdata 的默认处理   
        contentType : false,  //必须false才会自动加上正确的Content-Type
        success : function(data) {

        },
        error : function(er) {
            alert(er);
        }
    });
}

后台Controller层：

 @RequestMapping(value = "/addProductPic", produces = "text/html;charset=utf-8", method = RequestMethod.POST)
    @ResponseBody
    public void importPicFile(@RequestParam(value = "myfile", required = false)  MultipartFile myfile,
                              HttpServletRequest request,
                              HttpServletResponse response) throws IOException {

        String fileName = "";
        if (myfile.isEmpty()) {



        } else {
            //取得当前上传文件的文件名称
            String originalFilename = myfile.getOriginalFilename();
            //获得图片后缀名称,如果后缀不为图片格式，则不上传
            String suffix = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
            //获得上传路径的绝对路径地址(/upload)-->
            //   String realPath = request.getSession().getServletContext().getRealPath("/" + DirectoryName);
            //重命名上传后的文件名 111112323.jpg
            fileName = getFileName() + suffix;
            System.out.println("***************"+fileName);
            //定义上传路径 .../upload/111112323.jpg
            String filePath = "F:\\UpLoad\\images\\";
            //封装上传文件位置的全路径
            File uploadPath = new File(filePath, fileName);
            //把本地文件上传到封装上传文件位置的全路径
            myfile.transferTo(uploadPath);
        }

    }

    public String getFileName() {
        SimpleDateFormat simpledateFormat = new SimpleDateFormat("yyyyMMddHHmmss");
        Random random = new Random();
        return simpledateFormat.format(new Date()) + random.nextInt(10000);
    }