//实例化组件
        SmartUpload smartUpload = new SmartUpload();

        //初始化上传操作
        smartUpload.initialize(this.getServletConfig(), request, response);

        try {

            //上传准备
            smartUpload.upload();

            //对于普通数据，单纯到request对象是无法获取得到提交参数的。也是需要依赖smartUpload
            String password = smartUpload.getRequest().getParameter("password");
            System.out.println(password);

            //上传到uploadFile文件夹中
            smartUpload.save("uploadFile");

        } catch (SmartUploadException e) {
            e.printStackTrace();
        }

//设置upload的编码
        fileUpload.setHeaderEncoding("UTF-8");

String value = fileItem.getString("UTF-8");