SSM整合增删改查写到改时出现400错误

Question

SSM整合，增删改查，写到改时出现400错误
Controller代码

//跳转到修改页面
    @RequestMapping("/toUpdateGoods")
    public String toUpdateGoods(int id,Model model) {
        Goods goods = goodsService.queryGoodsById(id);
        System.out.println(goods);
        model.addAttribute("QGoods",goods);
        return "updateGoods";
    }

    //修改书籍
    @RequestMapping("/updateGoods")
    public String updateGoods(Model model, Goods good) {
        System.out.println("updateGoods=>"+good);
        goodsService.updateGoods(good);
        Goods goods = goodsService.queryGoodsById(good.getGoodsID());
        model.addAttribute("Goods", goods);
        return "redirect:/Goods/allGoods";
    }

HTML代码
allGoods.jsp

                        <tr>
                            <td>${goods.goodsID}</td>
                            <td>${goods.goodsName}</td>
                            <td>${goods.goodsPrice}</td>
                            <td>${goods.goodsQuantity}</td>
                            <td>
                                <a href="${pageContext.request.contextPath}/Goods/toUpdateGoods?id=${goods.goodsID}">更改</a> |
                                <a href="${pageContext.request.contextPath}/Goods/del/${goods.goodsID}">删除</a>
                            </td>
                        </tr>

updateGoods.jsp

<form action="${pageContext.request.contextPath}/Goods/updateGoods" method="post">
        <input type="hidden" name="goodsID" value="${goods.getGoodsID()}"/>
        货物名称：<input type="text" name="goodsName" value="${goods.goodsName()}"/>
        货物单价：<input type="text" name="goodsPrice" value="${goods.goodsPrice()}"/>
        货物数量：<input type="text" name="goodsQuantity" value="${goods.goodsQuantity() }"/>
        <input type="submit" value="提交"/>
    </form>

Answer 1

是访问页面报错还是请求报错，你得说清楚一点