1实现实体类创建：以订单功能为例子
import lombok.Data;
import java.io.Serializable;
import java.util.Date;
@Data
public class Order implements Serializable {
private static final long serialVersionUID = -4415517704211731385L;
//活动id
private Integer orderArticleId;
//用户ID
private Integer orderUserId;
//订单 ID
private Integer orderId;
//管理员：1 用户：0；
private Integer orderRole;
//创建时间
private Date orderCreateTime;
//订单用户名
private String orderAuthorName;
//活动
private Article article;
}
2.创建service接口 和 service实现类：pageInfo 也可以用List<order>
mport java.util.HashMap;
public interface OrderService {
/** * 获取所有评论列表 * * @param pageIndex 第几页开始 * @param pageSize 一页显示数量 * @return 列表 */
PageInfo<Order> listOrderByPage(
Integer pageIndex,
Integer pageSize,
HashMap<String, Object> criteria);
}
@Override
public PageInfo<Order> listOrderByPage(Integer pageIndex, Integer pageSize, HashMap<String, Object> criteria) {
List<Order> orderList = null;
try {
orderList = orderMapper.listOrders(criteria);
for (int i = 0; i < orderList.size(); i++) {
//getArticleByStatusAndId表示通过id查询用户信息
Article article = articleMapper.getArticleByStatusAndId(ArticleStatus.PUBLISH.getValue(), orderList.get(i).getOrderArticleId());
orderList.get(i).setArticle(article);
}
} catch (Exception e) {
e.printStackTrace();
log.error("分页获得订单失败,pageIndex:{}, pageSize:{}, cause:{}", pageIndex, pageSize, e);
}
return new PageInfo<>(orderList);
}
3实现orderMapper.xml中的
<!--获取评论列表-->
<select id="listOrders" resultType="com.liuyanzhao.ssm.demo.entity.Order">
SELECT
<include refid="Base_Column_List"/>
FROM
<include refid="tb"/>
<where>
<if test="userId != null">
order_user_id = #{ userId}
</if>
</where>
ORDER BY order_id DESC
</select>
注意 ：其中order为数据库的关键字 不能直接用表名 必须加‘order’
<sql id="tb">`order`</sql>
4.controller层和前端jsp代码也可以用其他的：
package com.l.ssm.demo.controller.admin;/* *@author hechun *@date 2021/5/22 13:50 * */
import com.github.pagehelper.PageInfo;
import com.liuyanzhao.ssm.demo.entity.Comment;
import com.liuyanzhao.ssm.demo.entity.Order;
import com.liuyanzhao.ssm.demo.entity.User;
import com.liuyanzhao.ssm.demo.enums.UserRole;
import com.liuyanzhao.ssm.demo.service.ArticleService;
import com.liuyanzhao.ssm.demo.service.OrderService;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.List;
@Controller
@RequestMapping("/admin/order")
public class BackOrderController {
@Autowired
private OrderService orderService;
@Autowired
private ArticleService articleService;
//required = false 表示 这个值可以为空.
@RequestMapping(value = "")
public String orderList(@RequestParam(required = false,defaultValue = "1")Integer pageIndex,
@RequestParam(required = false,defaultValue = "10")Integer pageSize,
HttpSession session,
Model model){
User user = (User) session.getAttribute("user");
HashMap<String, Object> criteria = new HashMap<>();
if(!UserRole.ADMIN.getValue().equals(user.getUserRole())){
//用户查询自己的订单,管理员查询所有的订单
criteria.put("userId",user.getUserId());
}
PageInfo<Order> orderPageInfo = orderService.listOrderByPage(pageIndex,pageSize,criteria);
model.addAttribute("pageInfo",orderPageInfo);
model.addAttribute("pageUrlPrefix","/admin/index?pageIndex");
return "Admin/Order/index";
}
}
<rapid:override name="content">
<blockquote class="layui-elem-quote">
<span class="layui-breadcrumb" lay-separator="/">
<a href="/admin">首页</a>
<a><cite>订单列表</cite></a>
</span>
</blockquote>
<div class="layui-tab layui-tab-card">
<table class="layui-table" lay-even lay-skin="nob">
<colgroup>
<col width="100">
<col width="300">
<col width=200">
<col width="150">
<col width="50">
</colgroup>
<thead>
<tr>
<th>作者</th>
<th>操作</th>
<th>于</th>
<th>提交于</th>
<th>ID</th>
</tr>
</thead>
<tbody>
<c:forEach items="${pageInfo.list}" var="c">
<tr>
<td>
<strong>${ c.orderAuthorName}</strong>
</td>
<td class="dashboard-comment-wrap">
<%-- <c:if test="${c.commentPid!=0}">--%>
<%-- <span class="at">@ </span><a href="${c.commentAuthorUrl}">${ c.commentPname}</a>--%>
<%-- </c:if>--%>
<%-- ${ c.commentContent}--%>
<div class="row-actions">
<%-- <c:if test="${sessionScope.user.userRole == 'admin'}">--%>
<%--<%– <span class=""> |–%>--%>
<%--<%– <a href="/admin/comment/edit/${c.commentId}">编辑</a>–%>--%>
<%--<%– </span>–%>--%>
<%-- </c:if>--%>
<span class=""> |
<a href="javascript:void(0)" onclick="deleteOrder(${c.orderId})">删除</a>
</span>
</div>
</td>
<td>
<a href="/article/${c.article.articleId}"
target="_blank">${ c.article.articleTitle}</a>
</td>
<td>
<fmt:formatDate value="${c.orderCreateTime}" pattern="yyyy年MM月dd日 HH:dd:ss"/>
</td>
<td>${ c.orderId}</td>
</tr>
</c:forEach>
</tbody>
</table>
<div id="nav" style="">
<%@ include file="../Public/paging.jsp" %>
</div>
</div>
</rapid:override>
仅供借鉴 ，代码不完全。
其中点击删除的js代码：
function deleteOrder(id) {
if(confirmDelete()==true){
$.ajax({
async: false,
type: "POST",
url:'/admin/order/delete/'+id,
contentType : "application/x-www-form-urlencoded; charset=utf-8",
dataType: "text",
complete:function () {
window.location.reload();
}
})
}
}
