JavaWeb实用项目之----化妆品销售网

升入本科之后又学了一遍Jsp(jsp+servlet+javaBean)，虽然之前没好好学，但对于课程中的各种技术还是有些面熟的。同时，作为一个考查的课程，老师还是教的蛮细心的，嗯，没白来。。。。。。

技术不用就会荒废，纸上得来终觉浅,绝知此事要躬行。

最近寻思着做一个小项目，回顾回顾所学的内容。。。。。。

化妆品销售网：myEclipse开发工具、JSP引擎为Tomcat 8.0，系统采用MVC模式实现各个模块，数据库使用MySQL（需要连接jar包）。

系统模块的构成：注册、登录、购物车、浏览化妆品、查询化妆品、确认订单、查询订单、退出登录。

数据库设计

建立数据库shop，其中包含四个表：user表、classify表、cosmeticForm表、orderForm表。

user表：用于存储用户的注册信息，字段值：logname(主键）（存储注册的用户名）、password（存储密码）、 phone（存储电话）、address（存储地址）、realname（存储姓名）。
classify表：对化妆品进行分类，存储化妆品类别，字段值：id（自增，主键）（化妆品的分类号）、name（化妆品的分类名称）。
cosmeticForm表：存储化妆品信息，字段值：cosmetic_number（主键）（化妆品的产品标识号）、cosmetic_name（化妆品的名称）、cosmetic_made（化妆品的制造商）、cosmetic_price（化妆品的价格）、cosmetic_mess（化妆品产品介绍）、cosmetic_pic（主键）（存储和化妆品相关的一副图像文件的名字）、id（自增，外键）（作为classify表中id的外键）。
orderForm表：存储订单信息，字段值：id（主键，自增）（存储订单序号）、logname（存储注册的用户名）、mess（订单信息）、sum（所选商品的价格总和）。

数据库连接：JDBC

String uri="jdbc://mysql://127.0.0.1/shop?"+"user=root&password=自己的密码&characterEncoding=utf-8";

Connection con=DriverManager.getConnection(uri);

导航条文件：head.jsp（其他页面使用<jsp:include page="head.jsp"/>包含导航条）

<body><div align="center"><font color=red><h3>"青山绿水"化妆品销售网</h3></font><table cellSpacing="1" cellPadding="1" width="660" align="center" border="0"><tr align="bottom">  <td><a href="index.jsp">主页</a></td><td><a href="lookCosmetic.jsp">浏览化妆品</a></td><td><a href="searchCosmetic.jsp">查询化妆品</a></td><td><a href="lookShoppingCar.jsp">查看购物车</a></td><td><a href="lookOrderForm.jsp">查看订单</a></td><td><a href="login.jsp">登录</a></td><td><a href="inputRegisterMess.jsp">注册</a></td><td><a href="exitServlet">退出</a></td></tr></table></div> <br><hr><br>
</body>

主页文件：index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head><jsp:include page="head.jsp"/></head><body><title>首页</title><center><h1><font size=4 color=blue>欢迎光临"青山绿水"化妆品销售网</font></h1><img src="data:image/welcome.jpg" width=600 height=200/></center></body>
</html>

运行图：

配置Web服务目录文件：web.xml（系统的Servlet类的包名均为:myservlet.control）

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"><display-name></display-name><servlet><servlet-name>registerServlet</servlet-name><servlet-class>myservlet.control.HandleRegister</servlet-class></servlet><servlet><servlet-name>loginServlet</servlet-name><servlet-class>myservlet.control.HandleLogin</servlet-class></servlet><servlet><servlet-name>deleteServlet</servlet-name><servlet-class>myservlet.control.HandleDelete</servlet-class></servlet><servlet><servlet-name>buyServlet</servlet-name><servlet-class>myservlet.control.HandleBuyGoods</servlet-class></servlet><servlet><servlet-name>queryServlet</servlet-name><servlet-class>myservlet.control.QueryAllRecord</servlet-class></servlet><servlet><servlet-name>putGoodsServlet</servlet-name><servlet-class>myservlet.control.PutGoodsToCar</servlet-class></servlet><servlet><servlet-name>searchByConditionServlet</servlet-name><servlet-class>myservlet.control.SearchByCondition</servlet-class></servlet><servlet><servlet-name>exitServlet</servlet-name><servlet-class>myservlet.control.HandleExit</servlet-class></servlet><servlet-mapping><servlet-name>registerServlet</servlet-name><url-pattern>/registerServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>loginServlet</servlet-name><url-pattern>/loginServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>deleteServlet</servlet-name><url-pattern>/deleteServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>buyServlet</servlet-name><url-pattern>/buyServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>queryServlet</servlet-name><url-pattern>/queryServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>putGoodsServlet</servlet-name><url-pattern>/putGoodsServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>searchByConditionServlet</servlet-name><url-pattern>/searchByConditionServlet</url-pattern></servlet-mapping><servlet-mapping><servlet-name>exitServlet</servlet-name><url-pattern>/exitServlet</url-pattern></servlet-mapping>    <welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list>
</web-app>

1、会员注册功能模块

（1）Model部分（JavaBean）：Register.java文件

package mybean.data;public class Register {private String logname="";private String phone="";private String address="";private String realname="";private String backNews="请输入信息";public String getLogname() {return logname;}public void setLogname(String logname) {this.logname = logname;}public String getPhone() {return phone;}public void setPhone(String phone) {this.phone = phone;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}public String getRealname() {return realname;}public void setRealname(String realname) {this.realname = realname;}public String getBackNews() {return backNews;}public void setBackNews(String backNews) {this.backNews = backNews;}}

（2）View部分（Jsp）:inputRegisterMess.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!-- 功能：负责提交用户注册信息到HandleRegister 的servlet控制器,并负责显示注册是否成功 -->
<jsp:useBean id="userBean" class="mybean.data.Register" scope="request"/>
<head><jsp:include page="head.jsp"/></head><title>注册页面</title>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><body background="image/back.jpg" style="color:white"><font size="3"><div align="center"><form action="registerServlet" method="post" name=form><table>用户名由字母、数字、下划线组成，*注释的选项必须填写。<br><tr><td>*用户名称：</td><td><input type="text" name="logname"/></td><td>*用户密码：</td><td><input type="password" name="password"/></td></tr><tr><td>*重复密码：</td><td><input type="password" name="again_password"/></td><td>联系电话：</td><td><input type="text" name="phone"/></td></tr><tr><td>邮寄地址：</td><td><input type="text" name="address"/></td><td>真实姓名：</td><td><input type="text" name="realname"/></td><td><input type="submit" name="g" value="提交"/></td></tr></table></form></div><div align="center"><p>注册反馈：<jsp:getProperty property="backNews" name="userBean"/><table border="3"><tr><td>会员名称：</td><td><jsp:getProperty property="logname" name="userBean"/></td></tr><tr><td>姓名：</td><td><jsp:getProperty property="realname" name="userBean"/></td></tr><tr><td>地址：</td><td><jsp:getProperty property="address" name="userBean"/></td></tr><tr><td>电话：</td><td><jsp:getProperty property="phone" name="userBean"/></td></tr></table></div></font>    </body>
</html>

（3）Control部分（Servlet）：HandleRegister.java文件

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import mybean.data.Register;
/***功能：接收inputRegisterMess.jsp提交的信息，注册用户*/
public class HandleRegister extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);try{Class.forName("com.mysql.jdbc.Driver");//加载mysql的jdbc驱动}catch(Exception e){e.printStackTrace();}}/*** 汉字乱码处理*/public String handleString(String s){try{byte[] bb=s.getBytes("iso-8859-1");s=new String(bb,"UTF-8");}catch(Exception e){}return s;}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request,response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {String uri="jdbc:mysql://127.0.0.1/shop?"+"user=root&password=dpl1215&characterEncoding=utf-8";Connection con;PreparedStatement sql;Register userBean=new Register();request.setAttribute("userBean", userBean);String logname=request.getParameter("logname").trim();String password=request.getParameter("password").trim();String again_password=request.getParameter("again_password").trim();String phone=request.getParameter("phone").trim();String address=request.getParameter("address").trim();String realname=request.getParameter("realname").trim();if(logname==null)logname="";if(password==null)password="";if(!password.equals(again_password)){userBean.setBackNews("两次密码不同，注册失败！");RequestDispatcher dispatcher=request.getRequestDispatcher("inputRegisterMess.jsp");dispatcher.forward(request, response);return;}boolean isLD=true;for(int i=0;i<logname.length();i++){//用户名字符或数字的判定char c=logname.charAt(i);if(!((c<='z'&&c>='a')||(c<='Z'&&c>='A')||(c<='9'&&c>='0')))isLD=false;}boolean boo=logname.length()>0&&password.length()>0&&isLD;String backNews="";//返回是否成功的消息try{con=DriverManager.getConnection(uri);String insertCondition="insert into user values(?,?,?,?,?)";sql=con.prepareStatement(insertCondition);if(boo){//判定输入的数据是否为空或者格式是否正确,然后存到数据库中sql.setString(1, handleString(logname));sql.setString(2,handleString(password));sql.setString(3, handleString(phone));sql.setString(4, handleString(address));sql.setString(5, handleString(realname));int m=sql.executeUpdate();if(m!=0){//更新成功之后，将数据存到userBean中backNews="注册成功,请登录！";userBean.setBackNews(backNews);userBean.setLogname(handleString(logname));userBean.setPhone(handleString(phone));userBean.setAddress(handleString(address));userBean.setRealname(handleString(realname));}}else{backNews="您输入的信息不完整或用户名中有非法字符";userBean.setBackNews(backNews);}con.close();}catch(Exception e){backNews="该会员名已被使用，请您更换名字"+e;userBean.setBackNews(backNews);}//注册数据的页面显示RequestDispatcher dispatcher=request.getRequestDispatcher("inputRegisterMess.jsp");dispatcher.forward(request, response);}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}
}

运行图：

2、会员登录功能模块

（1）Model部分（JavaBean）：Login.java文件

package mybean.data;import java.util.LinkedList;
//存储用户登录的信息
public class Login {private String logname="";private String backNews="未登录";private LinkedList<String> car;//用户的购物车public Login(){car=new LinkedList<String>();}public String getLogname() {return logname;}public void setLogname(String logname) {this.logname = logname;}public String getBackNews() {return backNews;}public void setBackNews(String backNews) {this.backNews = backNews;}public LinkedList<String> getCar() {return car;}
}

（2）View部分（Jsp）：login.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<jsp:useBean id="loginBean" class="mybean.data.Login" scope="session"/>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head> <body background="image/login_back.jpg"><font size=3><div align="center"><table border="1"><tr><th>登录</th></tr><form action="loginServlet" method="post"><tr><td>账号：<input type="text" name="logname"/></td></tr><tr><td>密码：<input type="password" name="password"/></td></tr><tr><td align="center"><input type="submit" name="g" value="提交" style="width: 60px"/></td></tr></form></table></div><div align="center">登录信息反馈：<jsp:getProperty property="backNews" name="loginBean"/><br>账号：<jsp:getProperty property="logname" name="loginBean"/>         </div></font></body>
</html>

（3）Control部分（Servlet）：HandleLogin.java文件

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import mybean.data.Login;/*** 功能：登录功能*/
public class HandleLogin extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}}/*** 汉字乱码处理*/public String handleString(String s){try{byte[] bb=s.getBytes("iso-8859-1");s=new String(bb,"UTF-8");}catch(Exception e){}return s;}public void destroy() {super.destroy(); // Just puts "destroy" string in log}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {Connection con;Statement sql;String logname=request.getParameter("logname").trim();String password=request.getParameter("password").trim();logname=handleString(logname);password=handleString(password);String uri="jdbc:mysql://127.0.0.1/shop?"+"user=root&password=dpl1215&characterEncoding=utf-8";boolean boo=(logname.length()>0)&&(password.length()>0);try{con=DriverManager.getConnection(uri);String condition="select * from user where logname='"+logname+"'and password='"+password+"'";sql=con.createStatement();if(boo){ResultSet rs=sql.executeQuery(condition);boolean m=rs.next();if(m){//调用登陆成功的方法success(request,response,logname,password);RequestDispatcher dispatcher=request.getRequestDispatcher("login.jsp");dispatcher.forward(request, response);}else{String backNews="您输入的账号不存在，或密码错误";fail(request,response,logname,backNews);}}else{String backNews="请输入账号和密码";fail(request,response,logname,backNews);}con.close();}catch(Exception e){String backNews=""+e;fail(request,response,logname,backNews);}}private void fail(HttpServletRequest request, HttpServletResponse response,String logname, String backNews) {response.setContentType("text/html;charset=utf-8");try{PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+logname+"登陆反馈结果<br>"+backNews+"</h2>");out.println("返回登录界面或主页<br>");out.println("<a href=login.jsp>登录界面</a>");out.println("<br><a href=index.jsp>主页</a>");out.println("</body></html>");}catch(Exception e){}}private void success(HttpServletRequest request,HttpServletResponse response, String logname, String password) {Login loginBean=null;HttpSession session=request.getSession();try{loginBean=(Login) session.getAttribute("loginBean");if(loginBean==null){loginBean=new Login();session.setAttribute("loginBean", loginBean);loginBean=(Login) session.getAttribute("loginBean");}String name=loginBean.getLogname();if(name.equals(logname)){loginBean.setBackNews(logname+"已经登陆了");loginBean.setLogname(logname);}else{loginBean.setBackNews(logname+"登陆成功");loginBean.setLogname(logname);}}catch(Exception e){loginBean=new Login();session.setAttribute("loginBean", loginBean);loginBean.setBackNews(logname+"登陆成功");loginBean.setLogname(logname);}}
}

运行图：

3、浏览化妆品功能模块

（1）Model部分（JavaBean）：DataByPage.java文件

package mybean.data;import com.sun.rowset.CachedRowSetImpl;
/*** 用于存储商品的数据库记录*/
public class DataByPage {CachedRowSetImpl rowSet=null;   //存储表中全部记录的行集对象private int pageSize=1;         //每页显示的记录数private int totalPages=1;       //分页后的总页数private int currentPage=1;      //当前显示页public void setRowSet(CachedRowSetImpl set){rowSet=set;}public CachedRowSetImpl getRowSet(){return rowSet;}public int getPageSize() {return pageSize;}public void setPageSize(int pageSize) {this.pageSize = pageSize;}public int getTotalPages() {return totalPages;}public void setTotalPages(int totalPages) {this.totalPages = totalPages;}public int getCurrentPage() {return currentPage;}public void setCurrentPage(int currentPage) {this.currentPage = currentPage;}}

（2）View部分（Jsp）：

lookCosmetic.jsp文件：（选择商品分类）

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*" %>
<!-- 用于选择某个商品分类 -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><body background="image/back.jpg"><font size="3"><div align="center"><%try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}String uri="jdbc:mysql://127.0.0.1/shop?"+"user=root&password=dpl1215&characterEncoding=utf-8";Connection con;Statement sql;ResultSet rs;try{con=DriverManager.getConnection(uri);sql=con.createStatement();rs=sql.executeQuery("select * from classify");//获取分类out.print("<form action='queryServlet' method='post'>");out.print("<select name='fenleiNumber'>");while(rs.next()){int id=rs.getInt(1);String name=rs.getString(2);out.print("<option value="+id+">"+name+"</option>");}out.print("</select><input type='submit' value='提交'></form>");con.close();}catch(Exception e){out.print(e);}%></div></font></body>
</html>

运行图：

byPageShow.jsp文件：（浏览选取的商品记录）

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ page import="mybean.data.DataByPage" %>
<%@ page import="com.sun.rowset.*" %><!-- 分页显示商品 -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><jsp:useBean id="dataBean" class="mybean.data.DataByPage" scope="session"/><body background="image/back.jpg" style="color: white"><font size="3"><center><br>当前显示的内容是：<table border="2"><tr><th>化妆品标识号</th><th>化妆品名称</th><th>化妆品制造商</th><th>化妆品价格</th><th>查看详情</th><td><font color=blue>添加到购物车</font></td></tr><jsp:setProperty property="pageSize" name="dataBean" param="pageSize"/><jsp:setProperty property="currentPage" name="dataBean" param="currentPage"/><%CachedRowSetImpl rowSet=dataBean.getRowSet();if(rowSet==null){out.print("没有任何查询信息，无法浏览");return;}rowSet.last();  //最后一行int totalRecord=rowSet.getRow();//获取总记录数out.println("全部记录数"+totalRecord);int pageSize=dataBean.getPageSize();//每页显示的记录数int totalPages=dataBean.getTotalPages();//获取分页后的总页数if(totalRecord%pageSize==0){totalPages=totalRecord/pageSize;//总页数}else{totalPages=totalRecord/pageSize+1;}dataBean.setPageSize(pageSize);dataBean.setTotalPages(totalPages);if(totalPages>=1){if(dataBean.getCurrentPage()<1)dataBean.setCurrentPage(dataBean.getTotalPages());if(dataBean.getCurrentPage()>dataBean.getTotalPages())dataBean.setCurrentPage(1);int index=(dataBean.getCurrentPage()-1)*pageSize+1;rowSet.absolute(index);//查询位置移动到currentPage页起始位置boolean boo=true;for(int i=1;i<=pageSize&&boo;i++){String number=rowSet.getString(1);String name=rowSet.getString(2);String maker=rowSet.getString(3);String price=rowSet.getString(4);String goods="("+number+","+name+","+maker+","+price+")#"+price;//便于购物车计算价格，尾缀上“#”价格值goods=goods.replaceAll("\\p{Blank}","");String button="<form action='putGoodsServlet' method='post'>"+"<input type='hidden' name='java' value= "+goods+">"+    //隐藏hidden，提交时直接将其value的值提交"<input type='submit' value='放入购物车'></form>";String detail="<form action='showDetail.jsp' method='post'>"+"<input type='hidden' name='xijie' value= "+number+">"+"<input type='submit' value='查看细节'></form>" ;out.print("<tr>");out.print("<td>"+number+"</td>");out.print("<td>"+name+"</td>");out.print("<td>"+maker+"</td>");out.print("<td>"+price+"</td>");out.print("<td>"+detail+"</td>");out.print("<td>"+button+"</td>");out.print("</tr>");boo=rowSet.next();}   }%></table><br>每页最多显示<jsp:getProperty property="pageSize" name="dataBean"/>条信息<br>当前显示第<font color=blue><jsp:getProperty property="currentPage" name="dataBean"/></font>页，共有<font color=blue><jsp:getProperty property="totalPages" name="dataBean"/></font>页。<table><tr><td><form action="" method="post"><input type="hidden" name="currentPage" value="<%=dataBean.getCurrentPage()-1%>"><input type="submit" name="g" value="上一页"></form></td><td><form action="" method="post"><input type="hidden" name="currentPage" value="<%=dataBean.getCurrentPage()+1%>"><input type="submit" name="g" value="下一页"></form></td></tr><tr><td><form action="" method="post">每页显示<input type="text" name="pageSize" value=1 size=3>条记录<input type="submit" name="g" value="确定">                      </form></td><td><form action="" method="post">输入页码：<input type="text" name="currentPage" size=2><input type="submit" name="g" value="提交">                      </form></td></tr></table></center></font></body>
</html>

运行图：

showDetail.jsp文件：（商品详情页）

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ page import="java.sql.*" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><jsp:useBean id="loginBean" class="mybean.data.Login" scope="session"/><body background="image/back.jpg" style="color: white"><center><%if(loginBean==null){response.sendRedirect("login.jsp");//重定向到登录页面}else{boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp");}String numberID=request.getParameter("xijie");out.print("<th>产品号"+numberID);if(numberID==null){out.print("没有产品号，无法查看细节!");return;}Connection con;Statement sql;ResultSet rs;try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}String uri="jdbc:mysql://127.0.0.1/shop";try{con=DriverManager.getConnection(uri, "root", "dpl1215");sql=con.createStatement();rs=sql.executeQuery("select * from cosmeticForm where cosmetic_number='"+numberID+"'");out.print("<table border=2>");out.print("<tr>");out.print("<th>产品号");out.print("<th>名称");out.print("<th>制造商");out.print("<th>价格");out.print("<th><font color=blue>放入购物车</font>");out.print("</tr>");String picture="welcome.jpg";String detailMess="";   //产品详情while(rs.next()){String number=rs.getString(1);String name=rs.getString(2);String maker=rs.getString(3);String price=rs.getString(4);detailMess=rs.getString(5);picture=rs.getString(6);//便于购物车计算价格，尾缀上"#价格值"String goods="("+number+","+name+","+maker+","+price+")#"+price;goods=goods.replaceAll("\\p{Blank}", "");//用""代替空格或制表符(\\p{Blank})String button="<form action='putGoodsServlet' method='post'>"+"<input type='hidden' name='java' value= "+goods+">"+"<input type='submit' value='加入购物车'></form>";out.print("<tr>");out.print("<td>"+number+"</td>");out.print("<td>"+name+"</td>");out.print("<td>"+maker+"</td>");out.print("<td>"+price+"</td>");out.print("<td>"+button+"</td>");out.print("</tr>");              }out.print("</table>");out.print("<br>产品详情：<br>");out.println("<div align=center>"+detailMess+"</div><br>");String pic="<img src='image/"+picture+"'width=260 height=200></img>";out.print(pic);//产品图片con.close();}catch(Exception e){}%></center></body>
</html>

运行图：

（3）Control部分（Servlet）：

QueryAllRecord.java文件：（浏览提交分类商品的记录）

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import com.sun.rowset.CachedRowSetImpl;import mybean.data.DataByPage;
/*** 功能：浏览商品记录*/
public class QueryAllRecord extends HttpServlet {CachedRowSetImpl rowSet=null;   //创建行集对象public void init(ServletConfig config) throws ServletException {super.init(config);try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String idNumber=request.getParameter("fenleiNumber");if(idNumber==null)idNumber="0";int id=Integer.parseInt(idNumber);HttpSession session=request.getSession();Connection con=null;DataByPage dataBean=null;try{dataBean=(DataByPage) session.getAttribute("dataBean");if(dataBean==null){dataBean=new DataByPage();//创建JavaBean对象session.setAttribute("dataBean", dataBean);}}catch(Exception e){dataBean=new DataByPage();//创建JavaBean对象session.setAttribute("dataBean", dataBean);}String uri="jdbc:mysql://127.0.0.1/shop";try{con=DriverManager.getConnection(uri, "root", "dpl1215");Statement sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);//TYPE_SCROLL_SENSITIVE，双向滚动，并及时跟踪数据库的更新,以便更改ResultSet中的数据。//ResultSet.CONCUR_READ_ONLY 不能用结果集更新数据库中的表。ResultSet rs=sql.executeQuery("select * from cosmeticForm where id="+id);rowSet=new CachedRowSetImpl();rowSet.populate(rs);//填充结果集（CachedRowSetImpl代替ResultSet）dataBean.setRowSet(rowSet);//行集数据存储在dataBean中con.close();//关闭连接}catch(Exception e){}response.sendRedirect("byPageShow.jsp");//重定向byPageShow.jsp}
}

PutGoodsToCar.java文件：（添加到购物车）

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedList;import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import mybean.data.Login;/*** 功能：商品添加到购物车*/
public class PutGoodsToCar extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request,response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String goods=request.getParameter("java");//获取添加购物车时隐藏的数据System.out.println(goods);Login loginBean=null;HttpSession session=request.getSession(true);try{loginBean=(Login) session.getAttribute("loginBean");boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp");LinkedList<String> car=loginBean.getCar();//获取用户购物车双线列表car.add(goods);//购物车添加商品各种数据speakSomeMess(request,response,goods);}catch(Exception e){}}private void speakSomeMess(HttpServletRequest request,HttpServletResponse response, String goods) {response.setContentType("text/html;charset=utf-8");try{PrintWriter out=response.getWriter();out.print("<html><head>" +"<div align='center'>" +"<font color=red><h3>'青山绿水'化妆品销售网</h3></font> "+"<table cellSpacing='1' cellPadding='1' width='660' align='center' border='0'>"+"<tr align='bottom'>"+  "<td><a href='index.jsp'>主页</a></td>"+"<td><a href='lookCosmetic.jsp'>浏览化妆品</a></td>"+"<td><a href='searchCosmetic.jsp'>查询化妆品</a></td>"+"<td><a href='lookShoppingCar.jsp'>查看购物车</a></td>"+"<td><a href='lookOrderForm.jsp'>查看订单</a></td>"+"<td><a href='login.jsp'>登录</a></td>"+"<td><a href='inputRegisterMess.jsp'>注册</a></td>"+"<td><a href='exitServlet'>退出</a></td>"+"</tr></table></div><br><hr><br></head>");out.println("<body background='image/back.jpg' style='color:white'><center>");out.println("<h2>商品已放入购物车</h2>");out.println("查看购物车或返回浏览化妆品<br><br>");out.println("<a href='lookShoppingCar.jsp'>查看购物车</a>");out.println("&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href='byPageShow.jsp'>浏览化妆品</a>");out.println("</center></body></html>");}catch(Exception e){}}
}

运行图：

4、查看购物车功能模块

（1）Model部分（JavaBean）：Login.java

（2）View部分（Jsp）：lookShoppingCar.jsp文件

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!-- 查看购物车界面 （包含删除）-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><jsp:useBean id="loginBean" class="mybean.data.Login" scope="session"/><body background="image/back.jpg" style="color:white"><font size=3><div align="center"><%if(loginBean==null){response.sendRedirect("login.jsp");//重定向到登录页面}else{boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp");}LinkedList<String> car=loginBean.getCar();if(car==null)out.print("<h2>购物车没有物品</h2>");else{Iterator<String> iterator=car.iterator();StringBuffer buyGoods=new StringBuffer();int n=0;double priceSum=0;out.print("购物车中的物品：<table border=2>");while(iterator.hasNext()){String goods=iterator.next();String showGoods="";n++;//购物车物品的后缀是“#价格数字“,比如"化妆品价格3989 #3989"int index=goods.lastIndexOf("#");if(index!=-1){priceSum+=Double.parseDouble(goods.substring(index+1));showGoods=goods.substring(0,index);}buyGoods.append(n+":"+showGoods);String del="<form action='deleteServlet' method='post'>"+"<input type='hidden' name='delete' value= "+goods+">"+"<input type='submit' value='删除'></form>";out.print("<tr><td>"+showGoods+"</td>");out.print("<td>"+del+"</td></tr>");           }out.print("</table>");String orderForm="<form action='buyServlet' method='post'>"+"<input type='hidden' name='buy' value= "+buyGoods+">"+"<input type='hidden' name='price' value= "+priceSum+">"+"<input type='submit' value='生成订单'></form>";out.print(orderForm);                 }   %></div></font></body>
</html>

（3）Control部分（Servlet）：

HandleDelete.java文件（购物车删除功能）

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.util.LinkedList;import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import mybean.data.Login;
/***功能：购物车商品删除*/
public class HandleDelete extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String delete =request.getParameter("delete");Login loginBean=null;HttpSession session=request.getSession(true);try{loginBean=(Login) session.getAttribute("loginBean");boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp");LinkedList<String> car=loginBean.getCar();car.remove(delete);//删除商品}catch(Exception e){response.sendRedirect("login.jsp");}RequestDispatcher dispatcher=request.getRequestDispatcher("lookShoppingCar.jsp");dispatcher.forward(request, response);}}

运行图：

HandleBuyGoods.java文件（生成订单功能）

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.LinkedList;import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import mybean.data.Login;
/*** 功能：生成订单*/
public class HandleBuyGoods extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}}public void destroy() {super.destroy(); // Just puts "destroy" string in log// Put your code here}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String buyGoodsMess=request.getParameter("buy");//获取商品订单数据if(buyGoodsMess==null||buyGoodsMess.length()==0){fail(request,response,"购物车没有商品，无法生成订单");return;}String price=request.getParameter("price");if(price==null||price.length()==0){fail(request,response,"没有计算价格和，无法生成订单");return;}float sum=Float.parseFloat(price);Login loginBean=null;HttpSession session=request.getSession(true);try{loginBean=(Login) session.getAttribute("loginBean");boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp");//重定向到login.jsp           }catch(Exception e){response.sendRedirect("login.jsp");}String uri="jdbc:mysql://127.0.0.1/shop?"+"user=root&password=dpl1215&characterEncoding=utf-8";Connection con;PreparedStatement sql;try{con=DriverManager.getConnection(uri);sql=con.prepareStatement("insert into orderform values(?,?,?,?)");sql.setInt(1, 0);//订单序号会自定增长sql.setString(2, loginBean.getLogname());sql.setString(3, buyGoodsMess);sql.setFloat(4, sum);sql.executeUpdate();LinkedList<String> car=loginBean.getCar();car.clear();//清空购物车success(request,response,"生成订单成功");}catch(Exception e){fail(request, response, "生成订单失败"+e);}}private void success(HttpServletRequest request,HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=utf-8");try{PrintWriter out =response.getWriter();out.println("<html><body background='image/back.jpg' style='color:white'>");out.println("<h2>"+backNews+"</h2>");out.println("返回主页");out.println("<a href='index.jsp'>主页</a>");out.println("<br>查看订单");out.println("<a href='lookOrderForm.jsp'>查看订单</a>");out.println("</body></html>");}catch(Exception e){}}private void fail(HttpServletRequest request, HttpServletResponse response,String backNews) {response.setCharacterEncoding("utf-8");try{PrintWriter out=response.getWriter();out.println("<html><body>");out.println("<h2>"+backNews+"</h2>");out.println("返回主页：");out.println("<a href='index.jsp'>主页</a>");out.println("</body></html>");}catch(Exception e){}}}

运行图：

5、查询化妆品功能模块

（1）Model部分（JavaBean）：DataByPage.java

（2）View部分（Jsp）：searchCosmetic.jsp文件（查询化妆品）

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><!-- 查询化妆品页面 -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><body background="image/back.jpg" style="color: white"><font size="3"><div align="center"><br>查询时可以输入化妆品的版本号或化妆品名称及价格。<br>化妆品名称支持模糊查询。<br>输入价格是在2个值之间的价格，格式是：价格1-价格2<br>例如258-689<form action="searchByConditionServlet" method="post"><br>输入查询信息：<input type="text" name="searchMess"><br><input type="radio" name="radio" value="cosmetic_number">化妆品版本号<input type="radio" name="radio" value="cosmetic_name" checked="ok">化妆品名称<input type="radio" name="radio" value="cosmetic_price">化妆品价格<br><input type="submit" name="g" value="提交"></form>                   </div></font></body>
</html>

（3）Control部分（Servlet）：SearchByCondition.java文件

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;import mybean.data.DataByPage;import sun.print.resources.serviceui;import com.sun.rowset.CachedRowSetImpl;
/*** 功能：查询化妆品 */
public class SearchByCondition extends HttpServlet {CachedRowSetImpl rowSet=null;public void init(ServletConfig config) throws ServletException {super.init(config);try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}}public void destroy() {super.destroy(); }public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {request.setCharacterEncoding("utf-8");String searchMess=request.getParameter("searchMess");String radioMess=request.getParameter("radio");if(searchMess==null||searchMess.length()==0){fail(request,response,"没有查询信息，无法查询");return;}String condition="";if(radioMess.equals("cosmetic_number")){condition="select * from cosmeticForm where cosmetic_number='"+searchMess+"'";}else if(radioMess.equals("cosmetic_name")){condition="select * from cosmeticForm where cosmetic_name like '%"+searchMess+"%'";}else if(radioMess.equals("cosmetic_price")){double max=0,min=0;String regex="[^0123456789.]";String[] priceMess=searchMess.split(regex);if(priceMess.length==1){max=min=Double.parseDouble(priceMess[0]);}else if(priceMess.length==2){min=Double.parseDouble(priceMess[0]);max=Double.parseDouble(priceMess[1]);if(max<min){double t=max;max=min;min=t;}}else{fail(request,response,"输入的价格格式有错误");return;}condition="select * from cosmeticForm where"+"cosmetic_price<="+max+"and cosmetic_price>="+min;}HttpSession session=request.getSession(true);Connection con=null;DataByPage dataBean=null;try{dataBean=(DataByPage) session.getAttribute("dataBean");if(dataBean==null){dataBean=new DataByPage();session.setAttribute("dataBean", dataBean);}}catch(Exception e){dataBean=new DataByPage();session.setAttribute("dataBean", dataBean);}String uri="jdbc:mysql://127.0.0.1/shop?"+"user=root&password=dpl1215&characterEncoding=utf-8";try{con=DriverManager.getConnection(uri);Statement sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_READ_ONLY);ResultSet rs=sql.executeQuery(condition);rowSet=new CachedRowSetImpl();//创建行集对象rowSet.populate(rs);//填充结果集dataBean.setRowSet(rowSet);//行集数据存储在dataBean中con.close();}catch(Exception e){}response.sendRedirect("byPageShow.jsp");}private void fail(HttpServletRequest request, HttpServletResponse response,String backNews) {response.setContentType("text/html;charset=utf-8");try{PrintWriter out=response.getWriter();out.println("<html><body background='image/back.jpg' style='color:white'>");out.println("<h2>"+backNews+"</h2>");out.println("返回：");out.println("<a href='searchCosmetic.jsp'>查询化妆品</a>");out.println("</body></html>");}catch(Exception e){}}
}

运行图：

6、查询订单功能模块

（1）Model部分（JavaBean）：Login.java

（2）View部分（Jsp）：lookOrderForm.jsp文件

<%@page import="java.sql.DriverManager"%>
<%@page import="java.sql.ResultSet"%>
<%@page import="java.sql.Statement"%>
<%@page import="java.sql.Connection"%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><jsp:include page="head.jsp"/></head><jsp:useBean id="loginBean" class="mybean.data.Login" scope="session"/><body background="image/back.jpg" style="color:white"><div align="center"><%if(loginBean==null){response.sendRedirect("login.jsp");//没登录时跳转到登录页面}else{boolean b=loginBean.getLogname()==null||loginBean.getLogname().length()==0;if(b)response.sendRedirect("login.jsp"); }Connection con;Statement sql;ResultSet rs;try{Class.forName("com.mysql.jdbc.Driver");}catch(Exception e){}try{String uri="jdbc:mysql://127.0.0.1/shop";String user="root";String password="dpl1215";con=DriverManager.getConnection(uri, user, password);sql=con.createStatement();String cdn="select id,mess,sum from orderForm where logname='"+loginBean.getLogname()+"'";rs=sql.executeQuery(cdn);out.print("<table border=2>");out.print("<tr>");out.print("<th width=100>"+"订单号");out.print("<th width=100>"+"信息");out.print("<th width=100>"+"价格");out.print("</tr>");while(rs.next()){out.print("<tr>");out.print("<td>"+rs.getString(1)+"</td>");out.print("<td>"+rs.getString(2)+"</td>");out.print("<td>"+rs.getString(3)+"</td>");out.print("<tr>");}out.print("</table>");con.close();}catch(Exception e){out.print(e);}%></div></body>
</html>

（3）Control部分（Servlet）：无

运行图：

7、退出登录模块

Control部分（Servlet）：HandleExit.java文件

package myservlet.control;import java.io.IOException;
import java.io.PrintWriter;import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
/*** 功能：退出登录*/
public class HandleExit extends HttpServlet {public void init(ServletConfig config) throws ServletException {super.init(config);}public void destroy() {super.destroy();}public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {doPost(request, response);}public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {HttpSession session=request.getSession(true);session.invalidate();//销毁用户的session对象response.sendRedirect("index.jsp");}
}

嗯，UI有些丑，支付功能没做！

源码

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