1. 前臺client有關的頁面
【header.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<link href="${pageContext.request.contextPath}/css/css.css" rel="stylesheet" type="text/css" />
<title>首頁</title>
</head>
<body style="text-align:center">
<br />
<a href="${pageContext.request.contextPath}">首頁</a>
<span style="width:800px"></span>
<c:if test="${empty user}"><!-- 也可以是：${sessionScope.user==null} -->
<a href="${pageContext.request.contextPath}/client/login.jsp">登錄</a>
<a href="${pageContext.request.contextPath}/client/regist.jsp">註冊</a>
</c:if>
<c:if test="${!empty user}">
歡迎您：${user.username} <!-- ${sessionScope.user.username} -->
<a href="${pageContext.request.contextPath}/clientServlet?operation=logout">註銷</a>
</c:if>
<a href="${pageContext.request.contextPath}/clientServlet?operation=showUsersOrders">我的訂單</a>
<a href="${pageContext.request.contextPath}/client/showCart.jsp">我的購物車</a>
<br />
<script language="javascript">
function qiehuan(num){
for(var id = 0;id<=9;id++)
{
if(id==num)
{
document.getElementById("qh_con"+id).style.display="block";
document.getElementById("mynav"+id).className="nav_on";
}
else
{
document.getElementById("qh_con"+id).style.display="none";
document.getElementById("mynav"+id).className="";
}
}
}
</script>
<div id=menu_out>
<div id=menu_in>
<div id=menu>
<UL id=nav>
<LI><A class=nav_on id=mynav0 οnmοuseοver=javascript:qiehuan(0) href="#"><SPAN>所有分類</SPAN></A></LI>
<LI class="menu_line"></LI>
</UL>
<div id=menu_con>
<div id=qh_con0 style="DISPLAY: block">
<UL>
<c:forEach items="${sessionScope.cs}" var="c">
<LI><A href="${pageContext.request.contextPath}/clientServlet?operation=showCategoryBook&categoryId=${c.id}"><SPAN>${c.name }</SPAN></A></LI>
<LI class=menu_line2></LI>
</c:forEach>
</UL>
</div>
</div>
</div>
</div>
</div>【listOrder.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>您近期的訂單如下：</h1>
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>訂單號</th>
<th>金額</th>
<th>訂單狀態</th>
<th>明細</th>
</tr>
<c:forEach items="${ os}" var="o">
<tr>
<td>${o.ordernum}</td>
<td>￥${o.price }元</td>
<td>${o.state==0?'未發貨':'已發貨'}</td>
<td>
<a href="${pageContext.request.contextPath}/clientServlet?operation=showOrdersDetail&ordersId=${o.id}">訂單詳情</a>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>
【login.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>用戶登錄</h1>
<form action="${pageContext.request.contextPath}/clientServlet?operation=login" method="post">
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<td>用戶名</td>
<td>
<input type="text" name="username"/>
</td>
</tr>
<tr>
<td>密碼</td>
<td>
<input type="password" name="password"/>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="登錄"/>
</td>
</tr>
</table>
</form>
</body>
</html>
【orderMsg.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
訂單號：${o.ordernum} </br>金額：￥${o.price }元</br>
明細如下：</br>
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>書名</th>
<th>作者</th>
<th>單價</th>
<th>小計</th>
<th>數量</th>
</tr>
<c:forEach items="${o.items }" var="i">
<tr>
<td>${i.book.name}</td>
<td>${i.book.author}</td>
<td>￥${i.book.price}元</td>
<td>${i.num}</td>
<td>￥${i.price}元</td>
</tr>
</c:forEach>
</table>
收貨信息如下：</br>
地址：${sessionScope.user.address}</br>
電話:${sessionScope.user.cellphone}</br>
</body>
</html>【regist.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>新用戶註冊</h1>
<form action="${pageContext.request.contextPath}/clientServlet?operation=regist" method="post">
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<td>用戶名</td>
<td>
<input type="text" name="username" />
</td>
</tr>
<tr>
<td>密碼</td>
<td>
<input type="password" name="password" />
</td>
</tr>
<tr>
<td>確認密碼</td>
<td>
<input type="password" name="password1" />
</td>
</tr>
<tr>
<td>電話</td>
<td>
<input type="text" name="cellphone" />
</td>
</tr>
<tr>
<td>手機</td>
<td>
<input type="text" name="mobilephone" />
</td>
</tr>
<tr>
<td>住址</td>
<td>
<input type="text" name="address" />
</td>
</tr>
<tr>
<td>郵箱</td>
<td>
<input type="text" name="email" />
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="註冊" />
</td>
</tr>
</table>
</form>
</body>
</html>【showChart.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>您購買的商品如下</h1>
<c:if test="${empty sessionScope.cart.items}">
<img height="180" width="120" src="${pageContext.request.contextPath }/files/0.jpg"/><br/>對不起，您沒有購買任何商品
</c:if>
<c:if test="${!empty sessionScope.cart.items}">
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>書名</th>
<th>作者</th>
<th>單價</th>
<th>數量</th>
<th>小計</th>
<th>操作</th>
</tr>
<c:forEach items="${ sessionScope.cart.items}" var="me">
<tr>
<td>${me.value.book.name}</td>
<td>${me.value.book.author }</td>
<td>${me.value.book.price }</td>
<td>${me.value.num }</td>
<td>${me.value.price}</td>
<td>
<a href="#" >刪除</a>
</td>
</tr>
</c:forEach>
<tr>
<td colspan="6" align="right">
總數量：${sessionScope.cart.num}
付款金額：${sessionScope.cart.price}
<a href="${pageContext.request.contextPath }/clientServlet?operation=genOrders">生成訂單</a>
</td>
</tr>
</table>
</c:if>
</body>
</html>【welcome.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>歡迎光臨</h1>
<!-- 顯示分頁數據，不分類的 -->
<table align="center">
<tr >
<c:forEach items="${page.records}" var="b">
<td>
<table>
<tr>
<td>
<img src="${pageContext.request.contextPath}/files/${b.image}"/>
</td>
</tr>
<tr>
<td>
書名：${b.name }<br />
作者：${b.author }<br />
原價：<strike>888</strike><br/>
震撼價：${b.price}
</td>
</tr>
<tr>
<td>
<a href="${pageContext.request.contextPath}/clientServlet?operation=buyBook&bookId=${b.id}">購買</a>
</td>
</tr>
</table>
</td>
</c:forEach>
</tr>
</table>
<tr align="center">
<td>
<%@ include file="/commons/page.jsp" %>
</td>
</tr>
</body>
</html>2. 前臺manager相關頁面
【header.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>
<%@ taglib uri="http://hw.com/jsp/jstl/myfunctions" prefix="myfn" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<link href="${pageContext.request.contextPath}/css/css.css" rel="stylesheet" type="text/css" />
<head>
<title>首頁</title>
</head>
<body style="text-align:center">
<br />
<br />
<script language="javascript">
function qiehuan(num){
for(var id = 0;id<=9;id++)
{
if(id==num)
{
document.getElementById("qh_con"+id).style.display="block";
document.getElementById("mynav"+id).className="nav_on";
}
else
{
document.getElementById("qh_con"+id).style.display="none";
document.getElementById("mynav"+id).className="";
}
}
}
</script>
<div id=menu_out>
<div id=menu_in>
<div id=menu>
<UL id=nav>
<LI><A class=nav_on id=mynav0 οnmοuseοver=javascript:qiehuan(0) href="#"><SPAN>分類管理</SPAN></A></LI>
<LI class="menu_line"></LI>
<li><a href="#" οnmοuseοver="javascript:qiehuan(1)" id="mynav1" class="nav_off"><span>圖書管理</span></a></li>
<li class="menu_line"></li>
<li><a href="#" οnmοuseοver="javascript:qiehuan( 2)" id="mynav2" class="nav_off"><span>訂單管理</span></a></li>
<li class="menu_line"></li>
</UL>
<div id=menu_con>
<div id=qh_con0 style="DISPLAY: block">
<UL>
<LI><a href="${pageContext.request.contextPath}/manage/addCategory.jsp"><span>添加分類</span></A></LI>
<LI class=menu_line2></LI>
<LI><A href="${pageContext.request.contextPath}/manageServlet?operation=listCategory"><SPAN>查詢分類</SPAN></A></LI>
<LI class=menu_line2></LI>
</UL>
</div>
<div id=qh_con1 style="DISPLAY: none">
<UL>
<LI><a href="${pageContext.request.contextPath}/manageServlet?operation=showCategoryUI"><span>添加圖書</span></A></LI>
<LI class=menu_line2></LI>
<LI><A href="${pageContext.request.contextPath}/manageServlet?operation=showAllBook"><SPAN>查詢圖書</SPAN></A></LI>
<LI class=menu_line2></LI>
</UL>
</div>
<div id=qh_con2 style="DISPLAY: none">
<UL>
<LI><a href="${pageContext.request.contextPath}/manageServlet?operation=showAllOrders0"><span>待處理訂單</span></A></LI>
<LI class=menu_line2></LI>
<LI><A href="${pageContext.request.contextPath}/manageServlet?operation=showAllOrders1"><SPAN>已處理訂單</SPAN></A></LI>
<LI class=menu_line2></LI>
</UL>
</div>
</div>
</div>
</div>
</div>【listBook.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
<h3>書籍列表</h3>
<table border="1" width="88%" align="center" style="text-align:center">
<tr>
<th>書名</th>
<th>作者</th>
<th>描述</th>
<th>所屬分類</th>
<th>圖片</th>
<th>操作</th>
</tr>
<c:forEach items="${page.records}" var="b">
<tr>
<td>${ b.name}</td>
<td>${b.author }</td>
<td>${b.description }</td>
<td>${myfn:getCategoryNameByIdEL(b.category_id)}</td>
<td>
<a href="${pageContext.request.contextPath}/files/${b.image}">查看圖片</a>
</td>
<td>
<a href="#" >[修改]</a>
<a href="#" >[刪除]</a>
</td>
</tr>
</c:forEach>
</table>
<!-- 視頻內容簡單分頁內容開始 -->
<!--
第${page.pagenum}頁/共${page.totalpage}頁
<a href="${pageContext.request.contextPath}/manageServlet?operation=showAllBook&pagenum=
${page.pagenum-1>0?pagenum-1:1}">上一頁</a>
<a href="${pageContext.request.contextPath}/manageServlet?operation=showAllBook&pagenum=
${page.pagenum+1>page.totalpage?page.totalpage:(page.pagenum+1)}">下一頁</a>
-->
<%@ include file="/commons/page.jsp" %>
<!-- 視頻內容簡單分頁內容結束 -->
</body>
</html>
【listCategory.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
<h2>分類列表</h2>
<c:if test="${empty cs}">
對不起，沒有分類，請先添加
</c:if>
<c:if test="${!empty cs}">
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>選擇</th>
<th>分類名稱</th>
<th>描述</th>
<th>操作</th>
</tr>
<c:forEach items="${cs}" var="c">
<tr>
<td>
<input type="checkbox" name="cids" value="${c.id }"/>
</td>
<td>${c.name }</td>
<td>${c.description }</td>
<td>
<a href="#" >更改</a>
<a href="#" >刪除</a>
</td>
<tr>
</c:forEach>
</table>
</c:if>
</body>
</html>
【addBook.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
<h2 align="center">添加圖書</h2>
<form action="${pageContext.request.contextPath}/manageServlet?operation=addBook" method="post" enctype="multipart/form-data" >
<table border="0" width="88%" align="center">
<tr>
<td>書名</td>
<td>
<input type="text" name="name"/>
</td>
</tr>
<tr>
<td>作者</td>
<td>
<input type="text" name="author"/>
</td>
</tr>
<tr>
<td>售價</td>
<td>
<input type="text" name="price"/>
</td>
</tr>
<tr>
<td>圖片</td>
<td>
<input type="file" name="img"/> <!-- ★和javabean的名字不一樣 -->
</td>
</tr>
<tr>
<td>描述</td>
<td>
<textarea rows="3" cols="38" name="description"></textarea>
</td>
</tr>
<tr>
<td>所屬分類</td>
<td>
<select name="category_id">
<c:forEach items="${cs}" var="c">
<option value="${c.id}">${c.name}</option>
</c:forEach>
</select>
</td>
</tr>
<tr>
<td>
<input type="submit" value="添加圖書"></td>
</tr>
</table>
</form>
${message}
</body>
</html>
【addCategory.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
<form action="${pageContext.request.contextPath}/manageServlet?operation=addCategory" method="post">
<table align="center" border="1" width="88%" >
<tr>
<td>*分類名稱</td>
<td>
<input type="text" name="name"/>
</td>
</tr>
<tr>
<td>概述</td>
<td>
<textarea rows="3" cols="34" name="description"></textarea>
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" value="添加"/>
</td>
</tr>
</table>
</form>
</body>
</html>【showOrders.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/client/header.jsp" %>
<h1>未發貨訂單如下：</h1>
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>用戶</th>
<th>訂單號</th>
<th>金額</th>
<th>訂單狀態</th>
<th>明細</th>
</tr>
<c:forEach items="${ os}" var="o">
<tr>
<td>${o.user.username}
<td>${o.ordernum}</td>
<td>￥${o.price }元</td>
<td>${o.state==0?'未發貨':'已發貨'}</td>
<td>
<a href="${pageContext.request.contextPath}/manageServlet?operation=showOrdersDetail&ordersId=${o.id}">訂單詳情</a>
</td>
</tr>
</c:forEach>
</table>
</body>
</html>【orderMsg.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
訂單號：${o.ordernum} </br>金額：￥${o.price }元</br>
明細如下：</br>
<table border="1" width="88%" style="text-align:center" align="center">
<tr>
<th>書名</th>
<th>作者</th>
<th>單價</th>
<th>小計</th>
<th>數量</th>
</tr>
<c:forEach items="${o.items }" var="i">
<tr>
<td>${i.book.name}</td>
<td>${i.book.author}</td>
<td>￥${i.book.price}元</td>
<td>${i.num}</td>
<td>￥${i.price}元</td>
</tr>
</c:forEach>
</table>
收貨信息如下：</br>
地址：${o.user.address}</br>
電話:${o.user.cellphone}</br>
</hr>
<c:if test="${o.state==0 }">
<a href="${pageContext.request.contextPath}/manageServlet?operation=sureSend&ordersId=${o.id}">確認發貨</a>
</c:if>
</body>
</html>【welcome.jsp】
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"
contentType="text/html;charset=UTF-8"%>
<%@ include file="/manage/header.jsp" %>
<h1 align="center">歡迎使用</h1>
</body>
</html>
3. 後臺代碼
後臺代碼管理員和客戶兩種基本角色各自一個Servlet解決：
-
客戶servlet：ClientServlet
public class ClientServlet extends HttpServlet {
private BusinessService bs = new BusinessServiceImpl();
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String operation = request.getParameter("operation");
if("showIndexCategory".equals(operation)){
showIndexCategory(request,response);
}
if("showCategoryBook".equals(operation)){
showCategoryBook(request,response);
}
if("buyBook".equals(operation)){
buyBook(request,response);
}
if("genOrders".equals(operation)){
genOrders(request,response);
}
if("regist".equals(operation)){
regist(request,response);
}
if("login".equals(operation)){
login(request,response);
}
if("logout".equals(operation)){
logout(request,response);
}
if("showUsersOrders".equals(operation)){
showUsersOrders(request,response);
}
if("showOrdersDetail".equals(operation)){
showOrdersDetail(request,response);
}
}
private void showOrdersDetail(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//1.判斷用戶是否登錄。1.1沒有登錄，轉向登錄頁面
HttpSession session = request.getSession();
User user = (User)session.getAttribute("user");
if(user==null){
request.setAttribute("message", "請先登錄！2秒後將自動轉向登錄頁面。<meta http-equiv='Refresh' content='2;" +
"URL="+request.getContextPath()+"/client/login.jsp'/>");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
return ;
}
String ordersId=request.getParameter("ordersId");
Orders o = bs.findOrdersById(ordersId);//★★查詢的是訂單明細，與通過用戶id查訂單是不同的，明細中還要查出書的信息
request.setAttribute("o", o);
request.getRequestDispatcher("/client/ordersMsg.jsp").forward(request, response);
}
//依據用戶id查詢用戶訂單
private void showUsersOrders(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//1.判斷用戶是否登錄。1.1沒有登錄，轉向登錄頁面
HttpSession session = request.getSession();
User user = (User)session.getAttribute("user");
if(user==null){
request.setAttribute("message", "請先登錄！2秒後將自動轉向登錄頁面。<meta http-equiv='Refresh' content='2;" +
"URL="+request.getContextPath()+"/client/login.jsp'/>");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
return ;
}
List<Orders> os = bs.findOrdersByUserId(user.getId());
request.getSession().setAttribute("os", os);
request.getRequestDispatcher("client/listOrders.jsp").forward(request,response);//轉向主頁
}
private void logout(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.getSession().invalidate();
//注意：註銷時是直接到根目錄下
request.getRequestDispatcher("/").forward(request, response);
}
private void login(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
User user = bs.login(username,password);
if(user==null){
request.setAttribute("message", "用戶名或密碼錯誤！");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
}else{
request.getSession().setAttribute("user", user);
response.sendRedirect(request.getContextPath());//轉向主頁
}
}
private void regist(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
User user = WebUtil.fillBean(request, User.class);
if(!(user.getPassword()).equals(user.getPassword1())){//這裏是比較
request.setAttribute("message", "兩次密碼輸入不匹配");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
}
bs.regist(user);
request.setAttribute("message", "註冊成功");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
}
//生成訂單，把訂單和訂單項的信息存到數據庫中
private void genOrders(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//1.判斷用戶是否登錄。1.1沒有登錄，轉向登錄頁面
HttpSession session = request.getSession();
User user = (User)session.getAttribute("user");
if(user==null){
request.setAttribute("message", "請先登錄！2秒後將自動轉向登錄頁面。<meta http-equiv='Refresh' content='2;" +
"URL="+request.getContextPath()+"/client/login.jsp'/>");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
return ;
}
//2.如果已經登錄，則將購物車裏面的東西按規則生成訂單信息
//取出購物車：Cart Map<String,CartItem>
Cart cart = (Cart)session.getAttribute("cart");//購物車<->訂單
Orders orders = new Orders();
orders.setNum(cart.getNum());
orders.setPrice(cart.getPrice());
//★▲弄購物項
List<OrdersItem> ordersItems = new ArrayList<OrdersItem>();//訂單項<->訂單項
for(Map.Entry<String, CartItem> item:cart.getItems().entrySet()){//★▲▲填充模型
CartItem i = item.getValue();//得到購物項
OrdersItem orderItem = new OrdersItem();
orderItem.setNum(i.getNum());
orderItem.setPrice(i.getPrice());
orderItem.setBook(i.getBook());
ordersItems.add(orderItem);
}
orders.setItems(ordersItems);
bs.addOrders(orders,user);
//刪除購物車
request.getSession().removeAttribute("cart");
request.setAttribute("message","訂單生成成功！購物車爲空");
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
}
private void buyBook(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//購買書的id
String bookId = request.getParameter("bookId");
//獲取要購買的書
Book book = bs.findBookById(bookId);
HttpSession session = request.getSession();
//★▲從HttpSession中取出購物車
Cart cart = (Cart)session.getAttribute("cart");
//>創建購物車（判斷是否有購物車）並放到httpsession中（購物車）
if(cart==null){
cart = new Cart();
session.setAttribute("cart",cart);
}
//把書放到購物車中
cart.addBook(book);
//提示購買成功
request.setAttribute("message", "購買成功，2秒後返回主頁面。<meta http-equiv='Refresh' content='2;" +
"URL="+request.getContextPath());
//頁面轉發
request.getRequestDispatcher("/client/message.jsp").forward(request, response);
}
//按照分類進行分頁書籍查詢
private void showCategoryBook(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String pagenum = request.getParameter("pagenum");
String categoryId = request.getParameter("categoryId");//★1.相對於下面那個方法再添加的
Page page = bs.findPageRecords(pagenum,categoryId);//★2.相對於下面那個方法再添加的
page.setUrl("/clientServlet?operation=showCategoryBook&categoryId="+categoryId);//★3.相對於下面那個方法再添加的
request.setAttribute("page", page);
request.getRequestDispatcher("/client/welcome.jsp").forward(request,response);
}
//查詢所有分類，封裝後，便於前端主頁的顯示
private void showIndexCategory(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
List<Category> cs = bs.findAllCategory();
request.getSession().setAttribute("cs", cs);//★★用session放大範圍以保持header.jsp部分的數據維護
//查詢所有書籍,還要分頁
String pagenum = request.getParameter("pagenum");
Page page = bs.findPageRecords(pagenum);
page.setUrl("/clientServlet?operation=showIndexCategory");
request.setAttribute("page", page);
request.getRequestDispatcher("/client/welcome.jsp").forward(request,response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
this.doGet(request, response);
}
}
</span>- 解決管理員基本功能的servlet：ManageServlet
public class ManageServlet extends HttpServlet {
private BusinessService bs = new BusinessServiceImpl();
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String operation = request.getParameter("operation");
if("addCategory".equals(operation))
addCategory(request,response);
if("listCategory".equals(operation))
listCategory(request,response);
if("showCategoryUI".equals(operation))
showCategoryUI(request,response);
if("addBook".equals(operation))
addBook(request,response);
if("showAllBook".equals(operation))
showAllBook(request,response);
if("showAllOrders0".equals(operation)){
showAllOrders0(request,response);
}
if("showAllOrders1".equals(operation)){
showAllOrders1(request,response);
}
if("showOrdersDetail".equals(operation)){
showOrdersDetail(request,response);
}
if("sureSend".equals(operation)){
sureSend(request,response);
}
}
private void sureSend(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String ordersId = request.getParameter("ordersId");
bs.sureOrders(ordersId);
request.setAttribute("message","成功發貨");
request.getRequestDispatcher("/message.jsp").forward(request, response);
}
private void showOrdersDetail(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//哪個用戶的也要查詢出來
String ordersId = request.getParameter("ordersId");
Orders o = bs.findOrdersById(ordersId);
request.setAttribute("o", o);
request.getRequestDispatcher("/manage/ordersMsg.jsp").forward(request, response);
}
private void showAllOrders1(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
List<Orders> os = bs.findOrdersByState(1);
request.setAttribute("os", os);
request.getRequestDispatcher("/manage/showOrders.jsp").forward(request, response);
}
//顯示所有爲發貨的訂單
private void showAllOrders0(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
List<Orders> os = bs.findOrdersByState(0);
request.setAttribute("os", os);
request.getRequestDispatcher("/manage/showOrders.jsp").forward(request, response);
}
//後臺查詢所有圖書分頁
private void showAllBook(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String pagenum = request.getParameter("pagenum");
Page page = bs.findPageRecords(pagenum);
page.setUrl("manageServlet?operation=showAllBook");//第二種分頁方式傳遞到jsp頁面的數據
request.setAttribute("page",page);
request.getRequestDispatcher("/manage/listBook.jsp").forward(request, response);
}
//添加書籍到數據庫：jsp頁面傳過來的是mutipart類型
private void addBook(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
String resultPath = "";
String storePath = getServletContext().getRealPath("/files");
try {
Book book = new Book();
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);//獲得待解析數據
//解析數據
for(FileItem item:items){
if(item.isFormField()){
//封裝數據到javabean中
String filedName = item.getFieldName();//字段名，即javabean的屬性名，除了圖片
String filedValue = item.getString(request.getCharacterEncoding());//保證得到的字符串是UTF-8格式
BeanUtils.setProperty(book,filedName,filedValue);//到這一步，除了圖片路徑，其它數據都有了
}else{
//處理文件上傳
InputStream in = item.getInputStream();
String fileName = item.getName();//用戶上傳文件路徑名
//從用戶上傳的文件路徑名中截取文件名。然後在加隨機碼，以防止用戶上傳的文件名相同發生衝突
fileName = UUID.randomUUID()+fileName.substring(fileName.lastIndexOf("\\")+1);
//設置存儲的圖片文件名
book.setImage(fileName);
OutputStream out = new FileOutputStream(storePath+"\\"+fileName);
byte b[] = new byte[1024];
int len = -1;
while((len=in.read(b))!=-1){
out.write(b,0,len);
}
out.close();
in.close();
item.delete();//★刪除臨時文件
}
}
//System.out.println(book);
bs.addBook(book);//★★先測試，然後看方法對不對，在寫service和dao層中寫該方法
List<Category> cs = bs.findAllCategory();
request.setAttribute("cs", cs);//如果沒有這兩句，添加完成後添加頁面將不會顯示圖書分類
resultPath = "/manage/addBook.jsp";
request.setAttribute("message","<script type='text/javascript'>alert('添加成功')</script>");
} catch (Exception e) {
e.printStackTrace();
resultPath="/message.jsp";
//TODO
request.setAttribute("message", "上傳出問題了");
}
request.getRequestDispatcher(resultPath).forward(request, response);
}
private void showCategoryUI(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
List<Category> cs = bs.findAllCategory();
request.setAttribute("cs", cs);
request.getRequestDispatcher("/manage/addBook.jsp").forward(request, response);
}
private void listCategory(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
List<Category> cs = bs.findAllCategory();
request.setAttribute("cs", cs);
request.getRequestDispatcher("/manage/listCategory.jsp").forward(request, response);
}
private void addCategory(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
Category ca = WebUtil.fillBean(request, Category.class);
bs.addCategory(ca);
request.setAttribute("message", "<script type='text/javascript'>alert('添加成功')</script>");
request.getRequestDispatcher("/manage/addCategory.jsp").forward(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
this.doGet(request, response);
}
}
