55商城项目（删除商品）

要求：

点击删除按钮，先出现友好弹框

确定删除后，弹出删除成功弹框

异步ajax不做整个页面刷新，只做表格刷新

所以弹框和页面无关

用json方式从服务器端返回字符串

1.页面开发

 <button type="button" class="btn btn-warning" id="mydel"
               onclick="del(${p.pId},${info.pageNum})">删除
 </button>

//单个删除
    function del(pid,page) {
        //弹框提示
        if (confirm("您确定删除吗?")) {
            //发出ajax的请求,进行删除操作
            //取出查询条件
            var pname = $("#pname").val();
            var typeid = $("#typeid").val();
            var lprice = $("#lprice").val();
            var hprice = $("#hprice").val();
            $.ajax({
                url: "${pageContext.request.contextPath}/prod/delete.action",
                data: {"pid": pid,"page": page,"pname":pname,"typeid":typeid,"lprice":lprice,"hprice":hprice},
                type: "post",
                dataType: "text",
                success: function (msg) {
                    alert(msg);
                    $("#table").load("http://localhost:8080/admin/product.jsp #table");
//删除后直接加载table，并不是直接加载jsp页面，request添加的属性显示不了
                }
            });
        }
    }

2.service开发

@Override
    public int delete(int pid) {
        return productInfoMapper.deleteByPrimaryKey(pid);
    }

3.controller开发

 @RequestMapping("/delete")
    public String delete(int pid, HttpServletRequest request) {
        int num = -1;

        try {
            num = productInfoService.delete(pid);
        } catch (Exception e) {
            e.printStackTrace();
        }

        if (num > 0) {
            request.setAttribute("msg", "删除成功!");
        } else {
            request.setAttribute("msg", "删除失败!");
        }

 //删除结束后跳到分页显示,重定向跳
    return "forward:/prod/deleteAjaxSplit.action";
}

为了显示分页，其实没太懂

@ResponseBody
    @RequestMapping(value = "/deleteAjaxSplit", produces = "text/html;charset=UTF-8")
//接收的数据不是json所以要用peoduces这个属性
    public Object deleteAjaxSplit(HttpServletRequest request) {
        //取得第1页的数据
        PageInfo info =productInfoService.splitPage(1, PAGE_SIZE);

　　　　 request.getSession().setAttribute("info",info); 

　　　　　return request.getAttribute("msg"); 
}