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
主页文件：index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
首页
欢迎光临"青山绿水"化妆品销售网
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）
registerServlet
myservlet.control.HandleRegister
loginServlet
myservlet.control.HandleLogin
deleteServlet
myservlet.control.HandleDelete
buyServlet
myservlet.control.HandleBuyGoods
queryServlet
myservlet.control.QueryAllRecord
putGoodsServlet
myservlet.control.PutGoodsToCar
searchByConditionServlet
myservlet.control.SearchByCondition
exitServlet
myservlet.control.HandleExit
registerServlet
/registerServlet
loginServlet
/loginServlet
deleteServlet
/deleteServlet
buyServlet
/buyServlet
queryServlet
/queryServlet
putGoodsServlet
/putGoodsServlet
searchByConditionServlet
/searchByConditionServlet
exitServlet
/exitServlet
index.jsp
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"%>
注册页面
注册反馈：
会员名称：
姓名：
地址：
电话：
（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='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 car;//用户的购物车
public Login(){
car=new LinkedList();
}
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 getCar() {
return car;
}
} （2）View部分（Jsp）：login.jsp文件
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
登录
登录信息反馈：
账号：（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("");
out.println(""+logname+"登陆反馈结果
"+backNews+"
");
out.println("返回登录界面或主页
");
out.println("登录界面");
out.println("
主页");
out.println("");
}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.*" %>
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.*" %>
当前显示的内容是：
化妆品标识号
化妆品名称
化妆品制造商
化妆品价格
查看详情
添加到购物车
");
out.print(""+number+" ");
out.print(""+name+" ");
out.print(""+maker+" ");
out.print(""+price+" ");
out.print(""+detail+" ");
out.print(""+button+" ");
out.print(" ");
boo=rowSet.next();
}
}
%>
每页最多显示
当前显示第
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.*" %>
<%
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("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("");
out.print("");
out.print("产品号");
out.print(" 名称");
out.print(" 制造商");
out.print(" 价格");
out.print(" 放入购物车");
out.print(" ");
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="";
out.print("");
out.print(""+number+" ");
out.print(""+name+" ");
out.print(""+maker+" ");
out.print(""+price+" ");
out.print(""+button+" ");
out.print(" ");
}
out.print("
");
out.print("
产品详情：
");
out.println(""+detailMess+"
");
String pic="![](image/"+picture+")
";
out.print(pic);//产品图片
con.close();
}catch(Exception e){}
%>
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 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("" +
"
");
out.println("");
out.println("商品已放入购物车
");
out.println("查看购物车或返回浏览化妆品
");
out.println("查看购物车");
out.println(" 浏览化妆品");
out.println(" ");
}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"%>
car=loginBean.getCar();
if(car==null)
out.print("购物车没有物品
");
else{
Iterator iterator=car.iterator();
StringBuffer buyGoods=new StringBuffer();
int n=0;
double priceSum=0;
out.print("购物车中的物品：");
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="";
out.print(""+showGoods+" ");
out.print(""+del+"
");
String orderForm="";
out.print(orderForm);
}
%>
（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 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 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("");
out.println(""+backNews+"
");
out.println("返回主页");
out.println("主页");
out.println("
查看订单");
out.println("查看订单");
out.println("");
}catch(Exception e){}
}
private void fail(HttpServletRequest request, HttpServletResponse response,
String backNews) {
response.setCharacterEncoding("utf-8");
try{
PrintWriter out=response.getWriter();
out.println("");
out.println(""+backNews+"
");
out.println("返回主页：");
out.println("主页");
out.println("");
}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"%>
查询时可以输入化妆品的版本号或化妆品名称及价格。
化妆品名称支持模糊查询。
输入价格是在2个值之间的价格，格式是：价格1-价格2
例如258-689
（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;
}
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("");
out.println(""+backNews+"
");
out.println("返回：");
out.println("查询化妆品");
out.println("");
}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"%>
");
out.print("");
out.print(""+"订单号");
out.print(" "+"信息");
out.print(" "+"价格");
out.print(" ");
while(rs.next()){
out.print("");
out.print(""+rs.getString(1)+" ");
out.print(""+rs.getString(2)+" ");
out.print(""+rs.getString(3)+" ");
out.print(" ");
}
out.print("
");
con.close();
}catch(Exception e){
out.print(e);
}
%>
（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
你可能感兴趣的:(Java)