Shop项目后台--4.所有订单的订单详情/admin/order/list.jsp
2018-01-14 21:19
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分析：
1、在list.jsp订单详情需要弹出层插件，插件代码有表示，触发按钮，弹出的内容，关闭按钮。
AdminServlet
2、根据弹出层插件代码，找到入口，“订单详情”。点击后触发事件，进行ajax异步查询，目的是得到，该订单下的所有订单项与商品详细信息，需要携带oid查询。查询得到的结果要用List<Map<String,Object>> ，其实Map<String,Object>就是一个对象的实体，然后把多个对象实体装在List集合中。List<Map<String,Object>>
本质与List<Product>结构一样。
根据业务需要进行多表查询product、orderitem，多表查询要找到表与表之间的关系。sql语句为：
select p.pimage, p.pname, p.shop_price, i.count, i.subtotal
from product p, orderitem i
where p.pid=i.pid and i.oid=oid
3、查询得到的是一个Map类型的集合 List<Map<String,Object>> mapList
4、利用Gson 把mapList转为json格式字符串，然后返回给ajax
list.jsp
5、通过ajax返回的数据开始拼字符串，动态显示查询到的数据。（最繁琐的拼串）“订单详情”弹出层里所有需要的数据，图片，名字，价格，件数，小计，订单编号。需要把这些写死的东西删除，遍历ajax返回的data数据获取活的数据，拼接字符串。
6、为了用户体现，读取数据库，时候ajax返回可能需要几秒钟，为了这几秒钟不出现“白板页面”，需要添加一个<div>专门显示等待的图片，当ajax有数据返回的时候该，隐藏该<div> 当点击下个"订单详情"清空content，与订单编号内容，同时把该<div>显示。
步骤：
在list.jsp页面
0、编写"订单详情"的单击事件，携带oid 注意携带的数据加上单引号.通过ajax查询数据库，获取所需的数据
在AdminServlet
1、获取oid，根据oid、p.pid=i.pid查询product、orderitem表、返回List<Map<String,Object> mapList
2、把mapList转为json格式字符串，传回给ajax
在list.jsp
3、把返回的数据，进行拼串content，图片、名字、价格、件数、小计。
4、加上友好的图片等待体验。设置默认显示等待图片<div> 显示，ajax成功返回数据时候隐藏。点击“订单详情”事件时，把整个弹出层清空，并显示等待图片<div>
list.jsp
<%@ page language="java" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<HTML>
<HEAD>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="${pageContext.request.contextPath}/css/Style1.css" rel="stylesheet" type="text/css" />
<script language="javascript" src="${pageContext.request.contextPath}/js/public.js"></script>
<!-- 弹出层插件 -->
<link href="${pageContext.request.contextPath}/css/popup_layer.css" type="text/css" rel="stylesheet"/>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.8.3.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/popup_layer.js"></script>
<!-- 调用插件弹出层的方法 -->
<script type="text/javascript">
$(function(){
//弹出层插件调用
new PopupLayer({
trigger:".clickedElement",//点击哪个地方，触发弹出层
popupBlk:"#showDiv",//触发后显示哪些页面内容
closeBtn:"#closeBtn",//关闭弹出层的按钮
useOverlay:true
});
});
//点击按钮查询某个订单详情
function findOrderInfoByOid(oid){
//清理上一次显示的内容覆盖
$("#showDivTab").html("");
$("#shodDivOid").html("");
$("#loading").css("display","block");
//ajax异步访问数据
$.post(
//1.执行的url
"${pageContext.request.contextPath}/admin?method=findOrderInfoByOid",
//2.传递的数据，数据以json格式传递
{"oid":oid},
//3.返回数据后执行的函数
function(data){
//隐藏加载图片
$("#loading").css("display","none");
//拼串，双印变为单引
var content = "<tr id='showTableTitle'><th width='20%'>图片</th><th width='25%'>商品</th><th width='20%'>价格</th><th width='15%'>数量</th><th width='20%'>小计</th></tr>";
//遍历data，开始拼接content
for(var i=0;i<data.length;i++){
content+="<tr style='text-align: center;'>"+
"<td>"+
"<img src='${pageContext.request.contextPath }/"+data[i].pimage+"' width='70' height='60'>"+
"</td>"+
"<td><a target='_blank'>"+data[i].pname+"</a></td>"+
"<td>￥"+data[i].shop_price+"</td>"+
"<td>"+data[i].count+"</td>"+
"<td><span class='subtotal'>￥"+data[i].subtotal+"</span></td>"+
"</tr>";
}
//把拼好的content放到showDivTab
$("#showDivTab").html(content);
//把订单编号改为活的
$("#shodDivOid").html(oid);
},
//4.返回数据的格式
"json"
);
}
</script>
</HEAD>
<body>
<form id="Form1" name="Form1" action="${pageContext.request.contextPath}/user/list.jsp" method="post">
<table cellSpacing="1" cellPadding="0" width="100%" align="center" bgColor="#f5fafe" border="0">
<TBODY>
<tr>
<td class="ta_01" align="center" bgColor="#afd1f3">
<strong>订单列表</strong>
</TD>
</tr>
<tr>
<td class="ta_01" align="center" bgColor="#f5fafe">
<table cellspacing="0" cellpadding="1" rules="all"
bordercolor="gray" border="1" id="DataGrid1"
style="BORDER-RIGHT: gray 1px solid; BORDER-TOP: gray 1px solid; BORDER-LEFT: gray 1px solid; WIDTH: 100%; WORD-BREAK: break-all; BORDER-BOTTOM: gray 1px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #f5fafe; WORD-WRAP: break-word">
<tr
style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; HEIGHT: 25px; BACKGROUND-COLOR: #afd1f3">
<td align="center" width="10%">
序号
</td>
<td align="center" width="10%">
订单编号
</td>
<td align="center" width="10%">
订单金额
</td>
<td align="center" width="10%">
收货人
</td>
<td align="center" width="10%">
订单状态
</td>
<td align="center" width="50%">
订单详情
</td>
</tr>
<!-- 动态显示order所有信息 -->
<c:forEach items="${orderList }" var="order" varStatus="vs">
<tr onmouseover="this.style.backgroundColor = 'white'"
onmouseout="this.style.backgroundColor = '#F5FAFE';">
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="18%">${vs.count }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.oid }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.total }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.name }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.state==0?"
4000
未付款":"已付款" }</td>
<td align="center" style="HEIGHT: 22px"><input
type="button" value="订单详情" class="clickedElement"
onclick="findOrderInfoByOid('${order.oid}')" />
</td>
</tr>
</c:forEach>
</table>
</td>
</tr>
</TBODY>
</table>
</form>
<!-- 弹出层 HaoHao added -->
<div id="showDiv" class="blk" style="display:none;">
<div class="main">
<h2>订单编号：<span id="shodDivOid" style="font-size: 13px;color: #999">123456789</span></h2>
<a href="javascript:void(0);" id="closeBtn" class="closeBtn">关闭</a>
<div id="loading" style="padding-top:30px;text-align: center;">
<!-- 等待图片 -->
<img alt="" src="${pageContext.request.contextPath }/images/loading.gif">
</div>
<div style="padding:20px;">
<table id="showDivTab" style="width:100%">
<!-- 在这里开始拼串 -->
<!-- 把固定的这个头，先移去拼串的开始content -->
<!-- <tr id='showTableTitle'>
<th width='20%'>图片</th>
<th width='25%'>商品</th>
<th width='20%'>价格</th>
<th width='15%'>数量</th>
<th width='20%'>小计</th>
</tr> -->
<!-- 循环拼串部分 -->
<%-- <tr style='text-align: center;'>
<td>
<img src='${pageContext.request.contextPath }/products/1/c_0014' width='70' height='60'>
</td>
<td><a target='_blank'>电视机</a></td>
<td>￥3000</td>
<td>3</td>
<td><span class='subtotal'>￥9000</span></td>
</tr> --%>
</table>
</div>
</div>
</div>
</body>
</HTML>
AdminServlet
package com.itheima.web.servlet;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.service.AdminService;
public class AdminServlet extends BaseServlet {
//根据订单id查询订单项与商品
public void findOrderInfoByOid(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//ajax访问，目的：获取该订单下的订单项
//获得oid
String oid = request.getParameter("oid");
//根据oid查询product表orderitem表
AdminService service = new AdminService();
List<Map<String,Object>> mapList = service.findOrderInfoByOid(oid);
//把mapList转为json的字符串格式
Gson gson = new Gson();
String json = gson.toJson(mapList);
//可以直接打印到控制台查看格式,以下为例子，返回一个数组，数组里装有json格式对象
/*[{"pimage":"products/1/c_0048.jpg","shop_price":1888.0,"pname":"Apple iPad mini 2 ME279CH/A","subtotal":1888.0,"count":1},{"pimage":"products/1/c_0050.jpg","shop_price":2299.0,"pname":"Apple iPad Air 2 MGLW2CH/A","subtotal":2299.0,"count":1},{"pimage":"products/1/c_0032.jpg","shop_price":6688.0,"pname":"Apple MacBook Air MJVE2CH/A 13.3英寸","subtotal":6688.0,"count":1},{"pimage":"products/1/c_0026.jpg","shop_price":6088.0,"pname":"Apple iPhone 6s (A1700) 64G 玫瑰金色","subtotal":6088.0,"count":1},{"pimage":"products/1/c_0015.jpg","shop_price":4288.0,"pname":"Apple iPhone 6 (A1586)","subtotal":4288.0,"count":1},{"pimage":"products/1/c_0039.jpg","shop_price":10288.0,"pname":"Apple 配备 Retina 显示屏的 MacBook","subtotal":10288.0,"count":1}]*/
System.out.println(json);
//把json字符串格式的mapList传回给ajax，记得设置UTF-8格式
response.setContentType("text/json;charset=UTF-8");
response.getWriter().write(json);
}
//获取所有的订单集合
public void findAllOrders(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//目的：获取所有的订单，存到list集合 orderList
AdminService service = new AdminService();
List<Order> orderList = service.findAllOrders();
//把orderList传到request域
request.setAttribute("orderList", orderList);
//转发到list.jsp显示
request.getRequestDispatcher("/admin/order/list.jsp").forward(request, response);
}
//获取商品的所有分类
public void findAllCategory(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//提供一个List<Category> 转成jason字符串
AdminService service = new AdminService();
List<Category> categoryList = service.findAllCategory();
//把categoryList转为jason字符串
Gson gson = new Gson();
String json = gson.toJson(categoryList);
//因为可能有中文，需要指定编码
response.setContentType("text/json;charset=UTF-8");
//把json字符串传回给ajax
response.getWriter().write(json);
}
}AdminService
package com.itheima.service;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import com.itheima.dao.AdminDao;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.domain.Product;
public class AdminService {
//获取商品所有分类列表
public List<Category> findAllCategory() {
AdminDao dao = new AdminDao();
List<Category> categoryList=null;
try {
categoryList = dao.findAllCategory();
} catch (SQLException e) {
e.printStackTrace();
}
return categoryList;
}
//把商品存到数据库
public void saveProduct(Product product) {
AdminDao dao = new AdminDao();
try {
dao.saveProduct(product);
} catch (SQLException e) {
e.printStackTrace();
}
}
//获取所有的订单
public List<Order> findAllOrders() {
AdminDao dao = new AdminDao();
List<Order> orderList =null;
try {
orderList = dao.findAllOrders();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return orderList;
}
//根据oid多表查询product，orderitem
public List<Map<String, Object>> findOrderInfoByOid(String oid) {
AdminDao dao = new AdminDao();
List<Map<String, Object>> mapList =null;
try {
mapList = dao.findOrderInfoByOid(oid);
} catch (SQLException e) {
e.printStackTrace();
}
return mapList;
}
}
AdminDao
package com.itheima.dao;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.Map;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.MapListHandler;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.domain.Product;
import com.itheima.utils.DataSourceUtils;
public class AdminDao {
//获取所有商品分类列表集合
public List<Category> findAllCategory() throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "select * from category";
List<Category> query = runner.query(sql, new BeanListHandler<Category>(Category.class));
return query;
}
//把商品存到数据库
public void saveProduct(Product product) throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "insert into product values(?,?,?,?,?,?,?,?,?,?)";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String dateStr = format.format(product.getPdate());
runner.update(sql, product.getPid(),product.getPname(),product.getMarket_price(),
product.getShop_price(),product.getPimage(),dateStr,
product.getIs_hot(),product.getPdesc(),product.getPflag(),product.getCategory().getCid());
}
//获取所有的订单
public List<Order> findAllOrders() throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql ="select * from orders";
List<Order> query = runner.query(sql, new BeanListHandler<Order>(Order.class));
return query;
}
//根据oid查询product，orderitem多表查询
public List<Map<String, Object>> findOrderInfoByOid(String oid) throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "select p.pimage,p.pname,p.shop_price,i.count,i.subtotal "+
"from product p,orderitem i "+
"where p.pid=i.pid and i.oid=? ";
List<Map<String, Object>> query = runner.query(sql, new MapListHandler(), oid);
return query;
}
}
分析：
1、在list.jsp订单详情需要弹出层插件，插件代码有表示，触发按钮，弹出的内容，关闭按钮。
AdminServlet
2、根据弹出层插件代码，找到入口，“订单详情”。点击后触发事件，进行ajax异步查询，目的是得到，该订单下的所有订单项与商品详细信息，需要携带oid查询。查询得到的结果要用List<Map<String,Object>> ，其实Map<String,Object>就是一个对象的实体，然后把多个对象实体装在List集合中。List<Map<String,Object>>
本质与List<Product>结构一样。
根据业务需要进行多表查询product、orderitem，多表查询要找到表与表之间的关系。sql语句为：
select p.pimage, p.pname, p.shop_price, i.count, i.subtotal
from product p, orderitem i
where p.pid=i.pid and i.oid=oid
3、查询得到的是一个Map类型的集合 List<Map<String,Object>> mapList
4、利用Gson 把mapList转为json格式字符串，然后返回给ajax
list.jsp
5、通过ajax返回的数据开始拼字符串，动态显示查询到的数据。（最繁琐的拼串）“订单详情”弹出层里所有需要的数据，图片，名字，价格，件数，小计，订单编号。需要把这些写死的东西删除，遍历ajax返回的data数据获取活的数据，拼接字符串。
6、为了用户体现，读取数据库，时候ajax返回可能需要几秒钟，为了这几秒钟不出现“白板页面”，需要添加一个<div>专门显示等待的图片，当ajax有数据返回的时候该，隐藏该<div> 当点击下个"订单详情"清空content，与订单编号内容，同时把该<div>显示。
步骤：
在list.jsp页面
0、编写"订单详情"的单击事件，携带oid 注意携带的数据加上单引号.通过ajax查询数据库，获取所需的数据
在AdminServlet
1、获取oid，根据oid、p.pid=i.pid查询product、orderitem表、返回List<Map<String,Object> mapList
2、把mapList转为json格式字符串，传回给ajax
在list.jsp
3、把返回的数据，进行拼串content，图片、名字、价格、件数、小计。
4、加上友好的图片等待体验。设置默认显示等待图片<div> 显示，ajax成功返回数据时候隐藏。点击“订单详情”事件时，把整个弹出层清空，并显示等待图片<div>
list.jsp
<%@ page language="java" pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<HTML>
<HEAD>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<link href="${pageContext.request.contextPath}/css/Style1.css" rel="stylesheet" type="text/css" />
<script language="javascript" src="${pageContext.request.contextPath}/js/public.js"></script>
<!-- 弹出层插件 -->
<link href="${pageContext.request.contextPath}/css/popup_layer.css" type="text/css" rel="stylesheet"/>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/jquery-1.8.3.min.js"></script>
<script type="text/javascript" src="${pageContext.request.contextPath}/js/popup_layer.js"></script>
<!-- 调用插件弹出层的方法 -->
<script type="text/javascript">
$(function(){
//弹出层插件调用
new PopupLayer({
trigger:".clickedElement",//点击哪个地方，触发弹出层
popupBlk:"#showDiv",//触发后显示哪些页面内容
closeBtn:"#closeBtn",//关闭弹出层的按钮
useOverlay:true
});
});
//点击按钮查询某个订单详情
function findOrderInfoByOid(oid){
//清理上一次显示的内容覆盖
$("#showDivTab").html("");
$("#shodDivOid").html("");
$("#loading").css("display","block");
//ajax异步访问数据
$.post(
//1.执行的url
"${pageContext.request.contextPath}/admin?method=findOrderInfoByOid",
//2.传递的数据，数据以json格式传递
{"oid":oid},
//3.返回数据后执行的函数
function(data){
//隐藏加载图片
$("#loading").css("display","none");
//拼串，双印变为单引
var content = "<tr id='showTableTitle'><th width='20%'>图片</th><th width='25%'>商品</th><th width='20%'>价格</th><th width='15%'>数量</th><th width='20%'>小计</th></tr>";
//遍历data，开始拼接content
for(var i=0;i<data.length;i++){
content+="<tr style='text-align: center;'>"+
"<td>"+
"<img src='${pageContext.request.contextPath }/"+data[i].pimage+"' width='70' height='60'>"+
"</td>"+
"<td><a target='_blank'>"+data[i].pname+"</a></td>"+
"<td>￥"+data[i].shop_price+"</td>"+
"<td>"+data[i].count+"</td>"+
"<td><span class='subtotal'>￥"+data[i].subtotal+"</span></td>"+
"</tr>";
}
//把拼好的content放到showDivTab
$("#showDivTab").html(content);
//把订单编号改为活的
$("#shodDivOid").html(oid);
},
//4.返回数据的格式
"json"
);
}
</script>
</HEAD>
<body>
<form id="Form1" name="Form1" action="${pageContext.request.contextPath}/user/list.jsp" method="post">
<table cellSpacing="1" cellPadding="0" width="100%" align="center" bgColor="#f5fafe" border="0">
<TBODY>
<tr>
<td class="ta_01" align="center" bgColor="#afd1f3">
<strong>订单列表</strong>
</TD>
</tr>
<tr>
<td class="ta_01" align="center" bgColor="#f5fafe">
<table cellspacing="0" cellpadding="1" rules="all"
bordercolor="gray" border="1" id="DataGrid1"
style="BORDER-RIGHT: gray 1px solid; BORDER-TOP: gray 1px solid; BORDER-LEFT: gray 1px solid; WIDTH: 100%; WORD-BREAK: break-all; BORDER-BOTTOM: gray 1px solid; BORDER-COLLAPSE: collapse; BACKGROUND-COLOR: #f5fafe; WORD-WRAP: break-word">
<tr
style="FONT-WEIGHT: bold; FONT-SIZE: 12pt; HEIGHT: 25px; BACKGROUND-COLOR: #afd1f3">
<td align="center" width="10%">
序号
</td>
<td align="center" width="10%">
订单编号
</td>
<td align="center" width="10%">
订单金额
</td>
<td align="center" width="10%">
收货人
</td>
<td align="center" width="10%">
订单状态
</td>
<td align="center" width="50%">
订单详情
</td>
</tr>
<!-- 动态显示order所有信息 -->
<c:forEach items="${orderList }" var="order" varStatus="vs">
<tr onmouseover="this.style.backgroundColor = 'white'"
onmouseout="this.style.backgroundColor = '#F5FAFE';">
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="18%">${vs.count }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.oid }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.total }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.name }</td>
<td style="CURSOR: hand; HEIGHT: 22px" align="center"
width="17%">${order.state==0?"
4000
未付款":"已付款" }</td>
<td align="center" style="HEIGHT: 22px"><input
type="button" value="订单详情" class="clickedElement"
onclick="findOrderInfoByOid('${order.oid}')" />
</td>
</tr>
</c:forEach>
</table>
</td>
</tr>
</TBODY>
</table>
</form>
<!-- 弹出层 HaoHao added -->
<div id="showDiv" class="blk" style="display:none;">
<div class="main">
<h2>订单编号：<span id="shodDivOid" style="font-size: 13px;color: #999">123456789</span></h2>
<a href="javascript:void(0);" id="closeBtn" class="closeBtn">关闭</a>
<div id="loading" style="padding-top:30px;text-align: center;">
<!-- 等待图片 -->
<img alt="" src="${pageContext.request.contextPath }/images/loading.gif">
</div>
<div style="padding:20px;">
<table id="showDivTab" style="width:100%">
<!-- 在这里开始拼串 -->
<!-- 把固定的这个头，先移去拼串的开始content -->
<!-- <tr id='showTableTitle'>
<th width='20%'>图片</th>
<th width='25%'>商品</th>
<th width='20%'>价格</th>
<th width='15%'>数量</th>
<th width='20%'>小计</th>
</tr> -->
<!-- 循环拼串部分 -->
<%-- <tr style='text-align: center;'>
<td>
<img src='${pageContext.request.contextPath }/products/1/c_0014' width='70' height='60'>
</td>
<td><a target='_blank'>电视机</a></td>
<td>￥3000</td>
<td>3</td>
<td><span class='subtotal'>￥9000</span></td>
</tr> --%>
</table>
</div>
</div>
</div>
</body>
</HTML>
AdminServlet
package com.itheima.web.servlet;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.google.gson.Gson;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.service.AdminService;
public class AdminServlet extends BaseServlet {
//根据订单id查询订单项与商品
public void findOrderInfoByOid(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//ajax访问，目的：获取该订单下的订单项
//获得oid
String oid = request.getParameter("oid");
//根据oid查询product表orderitem表
AdminService service = new AdminService();
List<Map<String,Object>> mapList = service.findOrderInfoByOid(oid);
//把mapList转为json的字符串格式
Gson gson = new Gson();
String json = gson.toJson(mapList);
//可以直接打印到控制台查看格式,以下为例子，返回一个数组，数组里装有json格式对象
/*[{"pimage":"products/1/c_0048.jpg","shop_price":1888.0,"pname":"Apple iPad mini 2 ME279CH/A","subtotal":1888.0,"count":1},{"pimage":"products/1/c_0050.jpg","shop_price":2299.0,"pname":"Apple iPad Air 2 MGLW2CH/A","subtotal":2299.0,"count":1},{"pimage":"products/1/c_0032.jpg","shop_price":6688.0,"pname":"Apple MacBook Air MJVE2CH/A 13.3英寸","subtotal":6688.0,"count":1},{"pimage":"products/1/c_0026.jpg","shop_price":6088.0,"pname":"Apple iPhone 6s (A1700) 64G 玫瑰金色","subtotal":6088.0,"count":1},{"pimage":"products/1/c_0015.jpg","shop_price":4288.0,"pname":"Apple iPhone 6 (A1586)","subtotal":4288.0,"count":1},{"pimage":"products/1/c_0039.jpg","shop_price":10288.0,"pname":"Apple 配备 Retina 显示屏的 MacBook","subtotal":10288.0,"count":1}]*/
System.out.println(json);
//把json字符串格式的mapList传回给ajax，记得设置UTF-8格式
response.setContentType("text/json;charset=UTF-8");
response.getWriter().write(json);
}
//获取所有的订单集合
public void findAllOrders(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//目的：获取所有的订单，存到list集合 orderList
AdminService service = new AdminService();
List<Order> orderList = service.findAllOrders();
//把orderList传到request域
request.setAttribute("orderList", orderList);
//转发到list.jsp显示
request.getRequestDispatcher("/admin/order/list.jsp").forward(request, response);
}
//获取商品的所有分类
public void findAllCategory(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//提供一个List<Category> 转成jason字符串
AdminService service = new AdminService();
List<Category> categoryList = service.findAllCategory();
//把categoryList转为jason字符串
Gson gson = new Gson();
String json = gson.toJson(categoryList);
//因为可能有中文，需要指定编码
response.setContentType("text/json;charset=UTF-8");
//把json字符串传回给ajax
response.getWriter().write(json);
}
}AdminService
package com.itheima.service;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import com.itheima.dao.AdminDao;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.domain.Product;
public class AdminService {
//获取商品所有分类列表
public List<Category> findAllCategory() {
AdminDao dao = new AdminDao();
List<Category> categoryList=null;
try {
categoryList = dao.findAllCategory();
} catch (SQLException e) {
e.printStackTrace();
}
return categoryList;
}
//把商品存到数据库
public void saveProduct(Product product) {
AdminDao dao = new AdminDao();
try {
dao.saveProduct(product);
} catch (SQLException e) {
e.printStackTrace();
}
}
//获取所有的订单
public List<Order> findAllOrders() {
AdminDao dao = new AdminDao();
List<Order> orderList =null;
try {
orderList = dao.findAllOrders();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return orderList;
}
//根据oid多表查询product，orderitem
public List<Map<String, Object>> findOrderInfoByOid(String oid) {
AdminDao dao = new AdminDao();
List<Map<String, Object>> mapList =null;
try {
mapList = dao.findOrderInfoByOid(oid);
} catch (SQLException e) {
e.printStackTrace();
}
return mapList;
}
}
AdminDao
package com.itheima.dao;
import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.List;
import java.util.Map;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.MapListHandler;
import com.itheima.domain.Category;
import com.itheima.domain.Order;
import com.itheima.domain.Product;
import com.itheima.utils.DataSourceUtils;
public class AdminDao {
//获取所有商品分类列表集合
public List<Category> findAllCategory() throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "select * from category";
List<Category> query = runner.query(sql, new BeanListHandler<Category>(Category.class));
return query;
}
//把商品存到数据库
public void saveProduct(Product product) throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "insert into product values(?,?,?,?,?,?,?,?,?,?)";
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String dateStr = format.format(product.getPdate());
runner.update(sql, product.getPid(),product.getPname(),product.getMarket_price(),
product.getShop_price(),product.getPimage(),dateStr,
product.getIs_hot(),product.getPdesc(),product.getPflag(),product.getCategory().getCid());
}
//获取所有的订单
public List<Order> findAllOrders() throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql ="select * from orders";
List<Order> query = runner.query(sql, new BeanListHandler<Order>(Order.class));
return query;
}
//根据oid查询product，orderitem多表查询
public List<Map<String, Object>> findOrderInfoByOid(String oid) throws SQLException {
QueryRunner runner = new QueryRunner(DataSourceUtils.getDataSource());
String sql = "select p.pimage,p.pname,p.shop_price,i.count,i.subtotal "+
"from product p,orderitem i "+
"where p.pid=i.pid and i.oid=? ";
List<Map<String, Object>> query = runner.query(sql, new MapListHandler(), oid);
return query;
}
}
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