【Spring+Mybatis+SpringMVC整合项目五】天猫商城（后台-订单管理开发）

这里再记录订单管理的开发步骤。看看订单的POJO

里面包含了四个非数据库字段

private List<OrderItem> orderItems;private User user;private float total;private int totalNumber;

1.orderItems是指订单项，每个订单项都有一个oid字段，表示对应某个订单，可以根据oid来查出这个订单下有哪些订单项

2.user订单归属的用户

3.total是总价格，所有产品的价格

4.totalNumber是订单总共有几件

5.getStatusDesc方法，用于把英文表达的Status信息转换为中文

Order.java

package com.how2java.tmall.pojo;import com.how2java.tmall.service.OrderService;import java.util.Date;
import java.util.List;public class Order {private Integer id;private String orderCode;private String address;private String post;private String receiver;private String mobile;private String userMessage;private Date createDate;private Date payDate;private Date deliveryDate;private Date confirmDate;private Integer uid;private String status;/*如下是非数据库字段*/private List<OrderItem> orderItems;private User user;private float total;private int totalNumber;public String getStatusDesc(){String desc ="未知";switch(status){case OrderService.waitPay:desc="待付款";break;case OrderService.waitDelivery:desc="待发货";break;case OrderService.waitConfirm:desc="待收货";break;case OrderService.waitReview:desc="等评价";break;case OrderService.finish:desc="完成";break;case OrderService.delete:desc="刪除";break;default:desc="未知";}return desc;}/*****/setter and getter/****/
}

再看看orderItem这个类

这个类下面有个Product类，我们可以根据OrderItem类下的pid查出这个product，就查出这条订单项的产品信息了

package com.how2java.tmall.pojo;public class OrderItem {private Integer id;private Integer pid;private Integer oid;private Integer uid;private Integer number;/*非数据库字段*/private Product product;/***/setter and getter/***/
}

因为Order类里面有List orderItems这个属性，所以我们就得在orderItemService中加入方法，提供一个可以根据oid查询出orderitem的接口

OrderItemService

package com.how2java.tmall.service;import java.util.List;import com.how2java.tmall.pojo.Order;
import com.how2java.tmall.pojo.OrderItem;public interface OrderItemService {void add(OrderItem c);void delete(int id);void update(OrderItem c);OrderItem get(int id);List list();void fill(List<Order> os);void fill(Order o);}

OrderItemServiceImpl

OrderItemServiceImpl实现OrderItemService，提供CRUD一套方法的实现。
同时还提供fill(Order order)和fill(List<Order> orders), 先说fill(Order order) :
为什么要提供这个方法呢？因为在订单管理界面，首先是遍历多个订单，然后遍历这个订单下的多个订单项。而由MybatisGenerator逆向工程所创建的一套自动生成代码，是不具备一对多关系的，需要自己去二次开发。这里就是做订单与订单项的一对多关系。
在fill(Order order)中：
1. 根据订单id查询出其对应的所有订单项
2. 通过setProduct为所有的订单项设置Product属性
3. 遍历所有的订单项，然后计算出该订单的总金额和总数量
4. 最后再把订单项设置在订单的orderItems属性上。

在fill(List<Order> orders) 中，就是遍历每个订单，然后挨个调用fill(Order order)。

package com.how2java.tmall.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.how2java.tmall.mapper.OrderItemMapper;
import com.how2java.tmall.pojo.Order;
import com.how2java.tmall.pojo.OrderItem;
import com.how2java.tmall.pojo.OrderItemExample;
import com.how2java.tmall.pojo.Product;
import com.how2java.tmall.service.OrderItemService;
import com.how2java.tmall.service.ProductService;@Service
public class OrderItemServiceImpl implements OrderItemService {@AutowiredOrderItemMapper orderItemMapper;@AutowiredProductService productService;@Overridepublic void add(OrderItem c) {orderItemMapper.insert(c);}@Overridepublic void delete(int id) {orderItemMapper.deleteByPrimaryKey(id);}@Overridepublic void update(OrderItem c) {orderItemMapper.updateByPrimaryKeySelective(c);}@Overridepublic OrderItem get(int id) {OrderItem result = orderItemMapper.selectByPrimaryKey(id);setProduct(result);return result;}public List<OrderItem> list(){OrderItemExample example =new OrderItemExample();example.setOrderByClause("id desc");return orderItemMapper.selectByExample(example);}@Overridepublic void fill(List<Order> os) {for (Order o : os) {fill(o);}}public void fill(Order o) {OrderItemExample example =new OrderItemExample();example.createCriteria().andOidEqualTo(o.getId());example.setOrderByClause("id desc");List<OrderItem> ois =orderItemMapper.selectByExample(example);setProduct(ois);float total = 0;int totalNumber = 0;for (OrderItem oi : ois) {total+=oi.getNumber()*oi.getProduct().getPromotePrice();totalNumber+=oi.getNumber();}o.setTotal(total);o.setTotalNumber(totalNumber);o.setOrderItems(ois);}public void setProduct(List<OrderItem> ois){for (OrderItem oi: ois) {setProduct(oi);}}private void setProduct(OrderItem oi) {Product p = productService.get(oi.getPid());oi.setProduct(p);};}

OrderService

package com.how2java.tmall.service;import java.util.List;import com.how2java.tmall.pojo.Order;public interface OrderService {String waitPay = "waitPay";String waitDelivery = "waitDelivery";String waitConfirm = "waitConfirm";String waitReview = "waitReview";String finish = "finish";String delete = "delete";void add(Order c);void delete(int id);void update(Order c);Order get(int id);List list();
}

OrderServiceImpl

package com.how2java.tmall.service.impl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import com.how2java.tmall.mapper.OrderMapper;
import com.how2java.tmall.pojo.Order;
import com.how2java.tmall.pojo.OrderExample;
import com.how2java.tmall.pojo.User;
import com.how2java.tmall.service.OrderService;
import com.how2java.tmall.service.UserService;@Service
public class OrderServiceImpl implements OrderService {@AutowiredOrderMapper orderMapper;@AutowiredUserService userService;@Overridepublic void add(Order c) {orderMapper.insert(c);}@Overridepublic void delete(int id) {orderMapper.deleteByPrimaryKey(id);}@Overridepublic void update(Order c) {orderMapper.updateByPrimaryKeySelective(c);}@Overridepublic Order get(int id) {return orderMapper.selectByPrimaryKey(id);}public List<Order> list(){OrderExample example =new OrderExample();example.setOrderByClause("id desc");List<Order> result =orderMapper.selectByExample(example);setUser(result);return result;}public void setUser(List<Order> os){for (Order o : os)setUser(o);}public void setUser(Order o){int uid = o.getUid();User u = userService.get(uid);o.setUser(u);}}

查询功能

当我们访问http://127.0.0.1:8080/tmall_ssm/admin_order_list时，就会导致OrderController.list()方法被调用

1. 获取分页对象
2. 查询订单集合
3. 获取订单总数并设置在分页对象上
4. 借助orderItemService.fill()方法为这些订单填充上orderItems信息
5. 把订单集合和分页对象设置在model上
6. 服务端跳转到admin/listOrder.jsp页面
7. 在listOrder.jsp借助c:forEach把订单集合遍历出来
8. 遍历订单的时候，再把当前订单的orderItem订单项集合遍历出来

@RequestMapping("admin_order_list")
public String list(Model model, Page page){PageHelper.offsetPage(page.getStart(),page.getCount());List<Order> os= orderService.list();int total = (int) new PageInfo<>(os).getTotal();page.setTotal(total);orderItemService.fill(os);model.addAttribute("os", os);model.addAttribute("page", page);return "admin/listOrder";
}

发货功能

当订单状态是waitDelivery的时候，就会出现发货按钮
1. 发货按钮链接跳转到admin_order_delivery
2. OrderController.delivery()方法被调用
2.1 注入订单对象
2.2 修改发货时间，设置发货状态
2.3 更新到数据库
2.4 客户端跳转到admin_order_list页面

@RequestMapping("admin_order_delivery")
public String delivery(Order o) throws IOException {o.setDeliveryDate(new Date());o.setStatus(OrderService.waitConfirm);orderService.update(o);return "redirect:admin_order_list";
}

OrderController.java完整代码

package com.how2java.tmall.controller;import java.io.IOException;
import java.util.Date;
import java.util.List;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.how2java.tmall.pojo.Order;
import com.how2java.tmall.service.OrderItemService;
import com.how2java.tmall.service.OrderService;
import com.how2java.tmall.util.Page;@Controller
@RequestMapping("")
public class OrderController {@AutowiredOrderService orderService;@AutowiredOrderItemService orderItemService;@RequestMapping("admin_order_list")public String list(Model model, Page page){PageHelper.offsetPage(page.getStart(),page.getCount());List<Order> os= orderService.list();int total = (int) new PageInfo<>(os).getTotal();page.setTotal(total);orderItemService.fill(os);model.addAttribute("os", os);model.addAttribute("page", page);return "admin/listOrder";}@RequestMapping("admin_order_delivery")public String delivery(Order o) throws IOException {o.setDeliveryDate(new Date());o.setStatus(OrderService.waitConfirm);orderService.update(o);return "redirect:admin_order_list";}
}

最后，在JSP上显示出来，就完成了订单管理的开发

listOrder.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8" import="java.util.*"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@include file="../include/admin/adminHeader.jsp"%>
<%@include file="../include/admin/adminNavigator.jsp"%><script>$(function(){$("button.orderPageCheckOrderItems").click(function(){var oid = $(this).attr("oid");$("tr.orderPageOrderItemTR[oid="+oid+"]").toggle();});});</script><title>订单管理</title><div class="workingArea"><h1 class="label label-info" >订单管理</h1><br><br><div class="listDataTableDiv"><table class="table table-striped table-bordered table-hover1  table-condensed"><thead><tr class="success"><th>ID</th><th>状态</th><th>金额</th><th width="100px">商品数量</th><th width="100px">买家名称</th><th>创建时间</th><th>支付时间</th><th>发货时间</th><th>确认收货时间</th><th width="120px">操作</th></tr></thead><tbody><c:forEach items="${os}" var="o"><tr><td>${o.id}</td><td>${o.statusDesc}</td><td>￥<fmt:formatNumber type="number" value="${o.total}" minFractionDigits="2"/></td><td align="center">${o.totalNumber}</td><td align="center">${o.user.name}</td><td><fmt:formatDate value="${o.createDate}" pattern="yyyy-MM-dd HH:mm:ss"/></td><td><fmt:formatDate value="${o.payDate}" pattern="yyyy-MM-dd HH:mm:ss"/></td><td><fmt:formatDate value="${o.deliveryDate}" pattern="yyyy-MM-dd HH:mm:ss"/></td><td><fmt:formatDate value="${o.confirmDate}" pattern="yyyy-MM-dd HH:mm:ss"/></td><td><button oid=${o.id} class="orderPageCheckOrderItems btn btn-primary btn-xs">查看详情</button><c:if test="${o.status=='waitDelivery'}"><a href="admin_order_delivery?id=${o.id}"><button class="btn btn-primary btn-xs">发货</button></a></c:if></td></tr><tr class="orderPageOrderItemTR"  oid=${o.id}><td colspan="10" align="center"><div  class="orderPageOrderItem"><table width="800px" align="center" class="orderPageOrderItemTable"><c:forEach items="${o.orderItems}" var="oi"><tr><td align="left"><img width="40px" height="40px" src="img/productSingle/${oi.product.firstProductImage.id}.jpg"></td><td><a href="foreproduct?pid=${oi.product.id}"><span>${oi.product.name}</span></a></td><td align="right"><span class="text-muted">${oi.number}个</span></td><td align="right"><span class="text-muted">单价：￥${oi.product.promotePrice}</span></td></tr></c:forEach></table></div></td></tr></c:forEach></tbody></table></div><div class="pageDiv"><%@include file="../include/admin/adminPage.jsp" %></div></div><%@include file="../include/admin/adminFooter.jsp"%>