我在页面中添加了thymelef后页面不显示

 我在页面中加入了thymelef的th:value属性，然后我的页面就不显示了

<form th:action="@{/update.do}" method="post" th:object="${fruit}">
                    <input type="hidden" name="fid" value="0">
                    <table id="tbl_fruit" >
                    <tr>
                        <th class="w20">名称:</th>
                        <td>
                            <input type="text" th:value="*{fname}" name="fname" />
                        </td>
                    </tr>
                    <tr>
                        <th class="w20">单价:</th>
                        <td>
                            <input type="text"  th:value="*{price}" name="price" />
                        </td>
                    </tr>
                    <tr>
                        <th class="w20">库存:</th>
                        <td>
                            <input type="text"  th:value="*{fcount}" name="fcount" />
                        </td>
                    <tr>
                    <tr>
                        <th class="w20">备注:</th>
                        <td>
                            <input type="text"  th:value="*{remark}" name="remark" />
                        </td>
                    <tr>
                        <th colspan="2">
                            <input type="submit" value="修改" />
                        </th>
                    </tr>
                </table>
                </form>

但是我的后台已经提交了数据了

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        FruitDAO dao=new FruitDAOImpl();
        String fidStr = request.getParameter("fid");
        if (StringUtils.isNotEmpty(fidStr)){
            int fid=Integer.parseInt(fidStr);
            Fruit fruit = dao.Query(fid);
            HttpSession session = request.getSession();
            session.setAttribute("fruit",fruit);
            super.processTemplate("edit",request,response);
        }

    }

但是我的结果就是这样的

img

1、后台有错吗？
2、fruit确定有值吧？