1.项目需求分析
javaWeb增强:
过滤器、监听器、国际化、文件上传与下载、JavaMail邮件开发
回顾项目开发设计模式之mvc模式:
M model 模型层 【entity/dao/service】
V view 视图层 【jsp/html…】
C control 控制器 【servlet】
优缺点:
每一层各司其职! 更容易更换具体的实现,而对其他层代码影响较小!
目标:
1. 掌握mvc开发模式
2. 需求分析
《需求分析说明书.doc》
3. 设计数据库
每一组用同一个数据库。
4. 编码
组长:分配任务,每个人要做什么 (项目计划)
项目开发生命周期
软件项目开发模式:
螺旋开发模式
适合于项目前期部分需求不确定的情况, 对于每一个模块一个个开发:分析、设计、编码、测试、上线;
好处: 降低软件风险! (做出的产品要尽量满足客户需求!)
瀑布模式:
先进行所有模块的需求分析,当分析结束后,才进入项目下一个阶段, 即设计、编码、测试、上线;
好处: 更容易进行项目把控,即项目质量控制!
需求分析:
软件工程师: 了解需求的途径?
1. 需求文档
2. 项目经理
3. 项目的系统原型 (美工设计师)
4. 客户
“餐馆王”系统功能:
1. 餐桌模块
2. 菜类别模块(菜系)
3. 菜信息 (菜品)
4. 订单
详细分析:
1. 后台录入的餐桌, 要在前台首页显示; 且只显示未预定
2. 后台录入的菜类别, 在前台主页显示
3. 后台录入的菜信息,在前台主页显示
4. 前台生成订单后,在后台显示订单详细
2.数据库设计
-- 创建数据库
CREATE DATABASE hotel CHARACTER SET utf8;USE hotel;-- 1. 餐桌表CREATE TABLE dinnerTable( id INT PRIMARY KEY AUTO_INCREMENT, -- 餐桌主键 tableName VARCHAR(20), -- 餐桌名 tableStatus INT DEFAULT 0, -- 餐桌状态:0,空闲; 1,预定 orderDate DATETIME);-- 2.菜类别表CREATE TABLE foodType( id INT PRIMARY KEY AUTO_INCREMENT, -- 类别主键 typeName VARCHAR(20));-- 3. 菜品种表CREATE TABLE food( id INT PRIMARY KEY AUTO_INCREMENT, -- 主键 foodName VARCHAR(20), -- 菜名称 foodType_id INT, -- 所属菜系, 外键字段 price DOUBLE, -- 价格 mprice DOUBLE, -- 会员价格 remark VARCHAR(200), -- 简介 img VARCHAR(100) -- 图片);-- 4. 订单表 (订单基本信息)CREATE TABLE orders( id INT PRIMARY KEY AUTO_INCREMENT, -- 主键 table_id INT, -- 外键: 餐桌编号 orderDate DATETIME, -- 下单日期 totalPrice DOUBLE, -- 订单所有菜需要的总金额 orderStatus INT DEFAULT 0 -- 订单状态: 0,未结账; 1,已结账);-- 5. 订单明细表 (主要是菜品种)CREATE TABLE orderDetail( id INT PRIMARY KEY AUTO_INCREMENT, -- 主键 orderId INT, -- 外键:引入的是订单表的主键 food_id INT, -- 外键:引用的是菜信息表的主键 foodCount INT -- 菜的数量 );-- 添加菜品与菜类别的关系约束ALTER TABLE food ADD CONSTRAINT fk_food_foodType_id FOREIGN KEY(foodType_id) REFERENCES foodType(id);-- 订单表: 与餐桌表的关系ALTER TABLE orders ADD CONSTRAINT order_table_id FOREIGN KEY(table_id) REFERENCES dinnertable(id);-- 订单明细: 与订单表的关系ALTER TABLE orderDetail ADD CONSTRAINT orderDetail_order_id FOREIGN KEY(orderId) REFERENCES orders(id);-- 订单明细: 与菜信息的关系ALTER TABLE orderDetail ADD CONSTRAINT orderDetail_food_id FOREIGN KEY(food_id) REFERENCES food(id);系统设计
开源组件及jar文件:
数据库驱动包(1个)
C3P0连接池包(2 个)
DbUtils组件 (1个)
BeanUtils组件(2个)
FileUpload组件(2个)
配置
C3p0配置文件
分层:
Entity/dao/service/servlet
3.页面显示如图
4.编码如下package com.xp.utils;import javax.sql.DataSource;import org.apache.commons.dbutils.QueryRunner;import com.mchange.v2.c3p0.ComboPooledDataSource;/** * 封装jdbc常用的操作 * @author xiongpan * 2017年2月16日 */public class JdbcUtils { // 初始化连接池 private static DataSource dataSource; static { dataSource = new ComboPooledDataSource(); } public static DataSource getDataSource() { return dataSource; } /** * 创建DbUtils常用工具类对象 */ public static QueryRunner getQuerrRunner() { return new QueryRunner(dataSource); }}<c3p0-config> <default-config> <property name="driverClass">com.MySQL.jdbc.Driver</property> <property name="jdbcUrl">jdbc:mysql:///hotel</property> <property name="user">root</property> <property name="passWord">xiongpan</property> <property name="initialPoolSize">5</property> <property name="maxPoolSize">10</property> </default-config> <named-config name="OracleConfig"> <property name="driverClass">com.mysql.jdbc.Driver</property> <property name="jdbcUrl">jdbc:mysql:///hotel</property> <property name="user">root</property> <property name="password">xiongpan</property> <property name="initialPoolSize">5</property> <property name="maxPoolSize">10</property> </named-config></c3p0-config>package com.xp.entity;/** * 1.菜系模块,实体类设计 * @author xiongpan * 2017年2月16日 */public class FoodType { private int id;//类别主键 private String typeName;//类别名称 public int getId() { return id; } public void setId(int id) { this.id = id; } public String getTypeName() { return typeName; } public void setTypeName(String typeName) { this.typeName = typeName; }}package com.xp.dao;import java.util.List;import com.xp.entity.FoodType;/** * 菜系模块,dao接口设计 * @author xiongpan */public interface IFoodTypeDao { /** * 添加 */ void save(FoodType foodType); /** * 更新 */ void update(FoodType foodType); /** * 删除 */ void delete(int id); /** * 根据主键查询 */ FoodType findById(int id); /** * 查询全部菜谱 */ List<FoodType> getAll(); /** * 按照菜系名称查询 */ List<FoodType> getAll(String typeName);}package com.xp.dao.impl;import java.util.List;import org.apache.commons.dbutils.handlers.BeanHandler;import org.apache.commons.dbutils.handlers.BeanListHandler;import com.xp.dao.IFoodTypeDao;import com.xp.entity.FoodType;import com.xp.utils.JdbcUtils;public class FoodTypeDao implements IFoodTypeDao { @Override public void delete(int id) { String sql = "delete from foodType where id=?"; try { JdbcUtils.getQuerrRunner().update(sql, id); } catch (Exception e) { throw new RuntimeException(e); } } @Override public FoodType findById(int id) { String sql = "select * from foodType where id=?"; try { return JdbcUtils.getQuerrRunner().query(sql, new BeanHandler<FoodType>(FoodType.class), id); } catch (Exception e) { throw new RuntimeException(e); } } @Override public List<FoodType> getAll() { String sql = "select * from foodType"; try { return JdbcUtils.getQuerrRunner().query(sql, new BeanListHandler<FoodType>(FoodType.class)); } catch (Exception e) { throw new RuntimeException(e); } } @Override public List<FoodType> getAll(String typeName) { String sql = "select * from foodType where typeName like ?"; try { return JdbcUtils.getQuerrRunner() .query(sql, new BeanListHandler<FoodType>(FoodType.class),"%" + typeName + "%"); } catch (Exception e) { throw new RuntimeException(e); } } @Override public void save(FoodType foodType) { String sql = "INSERT INTO foodType(typeName) VALUES(?);"; try { JdbcUtils.getQuerrRunner().update(sql,foodType.getTypeName()); } catch (Exception e) { throw new RuntimeException(e); } } @Override public void update(FoodType foodType) { String sql = "update foodType set typeName=? where id=?"; try { JdbcUtils.getQuerrRunner().update(sql, foodType.getTypeName(),foodType.getId()); } catch (Exception e) { throw new RuntimeException(e); } }}package com.xp.service;import java.util.List;import com.xp.entity.FoodType;public interface IFoodTypeService { /** * 添加 */ void save(FoodType foodType); /** * 更新 */ void update(FoodType foodType); /** * 删除 */ void delete(int id); /** * 根据主键查询 */ FoodType findById(int id); /** * 查询全部 */ List<FoodType> getAll(); /** * 根据菜系名称查询 */ List<FoodType> getAll(String typeName);}package com.xp.factory;import java.util.ResourceBundle;/*** 工厂:创建dao或service实例*/public class BeanFactory { // 加载配置文件 private static ResourceBundle bundle; static { bundle = ResourceBundle.getBundle("instance"); } /** * 根据指定的key,读取配置文件获取类的全路径; 创建对象 * @return */ public static <T> T getInstance(String key,Class<T> clazz) { String className = bundle.getString(key); try { return (T) Class.forName(className).newInstance(); } catch (Exception e) { throw new RuntimeException(e); } }}package com.xp.service.impl;import java.util.List;import com.xp.dao.IFoodTypeDao;import com.xp.entity.FoodType;import com.xp.factory.BeanFactory;import com.xp.service.IFoodTypeService;public class FoodTypeService implements IFoodTypeService { //private IFoodTypeDao foodTypeDao = new FoodTypeDao();// 对象的创建,不能写死。 // 工厂创建对象 private IFoodTypeDao foodTypeDao = BeanFactory.getInstance("foodtypeDao", IFoodTypeDao.class); @Override public void save(FoodType foodType) { try { foodTypeDao.save(foodType); } catch (Exception e) { throw new RuntimeException(e); } } @Override public void update(FoodType foodType) { try { foodTypeDao.update(foodType); } catch (Exception e) { throw new RuntimeException(e); } } @Override public void delete(int id) { try { foodTypeDao.delete(id); } catch (Exception e) { throw new RuntimeException(e); } } @Override public FoodType findById(int id) { try { return foodTypeDao.findById(id); } catch (Exception e) { throw new RuntimeException(e); } } @Override public List<FoodType> getAll() { try { return foodTypeDao.getAll(); } catch (Exception e) { throw new RuntimeException(e); } } @Override public List<FoodType> getAll(String typeName) { try { return foodTypeDao.getAll(typeName); } catch (Exception e) { throw new RuntimeException(e); } }}Instance.properties# dao instancefoodtypeDao = com.xp.dao.impl.FoodTypeDao# service instance foodTypeService =com.xp.service.impl.FoodTypeServicepackage com.xp.servlet;import java.io.IOException;import java.util.List;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import com.xp.entity.FoodType;import com.xp.factory.BeanFactory;import com.xp.service.IFoodTypeService;/** * 4. 菜系管理Servlet开发 * a. 添加菜系 * b. 菜系列表展示 * c. 进入更新页面 * d. 删除 * e. 更新 */public class FoodTypeServlet extends HttpServlet { private static final long serialVersionUID = 1L; // 调用的菜系Service private IFoodTypeService foodTypeService = BeanFactory.getInstance("foodTypeService",IFoodTypeService.class); // 跳转资源 private Object uri; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 设置编码 request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); // 获取操作的类型 String method = request.getParameter("method"); // 判断 if ("addFoodType".equals(method)) { // 添加 addFoodType(request, response); } else if ("list".equals(method)) { // 列表展示 list(request, response); } else if ("viewUpdate".equals(method)) { // 进入更新页面 viewUpdate(request, response); } else if ("delete".equals(method)) { // 删除 delete(request, response); } else if ("update".equals(method)) { // 更新 update(request, response); } } //a. 添加菜系 public void addFoodType(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // 1. 获取请求数据封装 String foodTypeName = request.getParameter("foodTypeName"); FoodType ft = new FoodType(); ft.setTypeName(foodTypeName); // 2. 调用service处理业务逻辑 foodTypeService.save(ft); // 3. 跳转 uri = request.getRequestDispatcher("/foodType?method=list"); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } goTo(request, response, uri); } //b. 菜系列表展示 public void list(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // 调用Service查询所有的类别 List<FoodType> list = foodTypeService.getAll(); // 保存 request.setAttribute("listFoodType", list); // 跳转的菜系列表页面 uri = request.getRequestDispatcher("/sys/type/foodtype_list.jsp"); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } // 跳转 goTo(request, response, uri); } //c. 进入更新页面 public void viewUpdate(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // 1. 获取请求id String id = request.getParameter("id"); // 2. 根据id查询对象 FoodType ft = foodTypeService.findById(Integer.parseInt(id)); // 3. 保存 request.setAttribute("foodType", ft); // 4. 跳转 uri = request.getRequestDispatcher("/sys/type/foodtype_update.jsp"); } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } goTo(request, response, uri); } //d. 删除 public void delete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { // 1. 获取请求id String id = request.getParameter("id"); // 2. 调用Service foodTypeService.delete(Integer.parseInt(id)); // 3. 跳转 uri = "/foodType?method=list"; } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } goTo(request, response, uri); } // e. 更新 public void update(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { //1. 获取请求数据封装 int id = Integer.parseInt(request.getParameter("id")); String name = request.getParameter("foodTypeName"); FoodType foodType = new FoodType(); foodType.setId(id); foodType.setTypeName(name); //2. 调用Service更新 foodTypeService.update(foodType); //3. 跳转 //list(request,response); uri = "/foodType?method=list"; } catch (Exception e) { e.printStackTrace(); uri = "/error/error.jsp"; } // 跳转 goTo(request, response, uri); } /** * 跳转的通用方法 */ private void goTo(HttpServletRequest request, HttpServletResponse response, Object uri) throws ServletException, IOException { if (uri instanceof RequestDispatcher){ ((RequestDispatcher)uri).forward(request, response); } else if (uri instanceof String) { response.sendRedirect(request.getContextPath() + uri); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } }<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <!-- 包含公共的JSP代码片段 --><title>无线点餐平台</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script type="text/Javascript" src="${pageContext.request.contextPath }/sys/style/js/jquery.js"></script><script type="text/javascript" src="${pageContext.request.contextPath }/sys/style/js/page_common.js"></script><link href="${pageContext.request.contextPath }/sys/style/CSS/common_style_blue.css" rel="stylesheet" type="text/css"><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/sys/style/css/index_1.css" /></head><body> <!-- 页面标题 --> <div id="TitleArea"> <div id="TitleArea_Head"></div> <div id="TitleArea_Title"> <div id="TitleArea_Title_Content"> <img border="0" width="13" height="13" src="${pageContext.request.contextPath }/sys/style/images/title_arrow.gif" /> 菜系列表 </div> </div> <div id="TitleArea_End"></div> </div> <!-- 过滤条件 --> <div id="QueryArea"> <form action="/wirelessplatform/cuisine.html" method="get"> <input type="hidden" name="method" value="search"> <input type="text" name="keyword" title="请输入菜系名称"> <input type="submit" value="搜索"> </form> </div> <!-- 主内容区域(数据列表或表单显示) --> <div id="MainArea"> <table class="MainArea_Content" align="center" cellspacing="0" cellpadding="0"> <!-- 表头--> <thead> <tr align="center" valign="middle" id="TableTitle"> <td>菜系编号</td> <td>菜系名称</td> <td>操作</td> </tr> </thead> <!--显示数据列表 --> <tbody id="TableData"> <c:choose> <c:when test="${not empty requestScope.listFoodType}"> <c:forEach var="foodType" items="${requestScope.listFoodType}"> <tr> <td>${foodType.id }</td> <td>${foodType.typeName }</td> <td> <a href="${pageContext.request.contextPath }/foodType?id=${foodType.id}&method=viewUpdate" class="FunctionButton">更新</a> <a href="${pageContext.request.contextPath }/foodType?id=${foodType.id}&method=delete" class="FunctionButton">删除</a> </td> </tr> </c:forEach> </c:when> <c:otherwise> <tr> <td colspan="3">没有你要找找的数据,请先保存记录再查看!</td> </tr> </c:otherwise> </c:choose> </tbody> </table> <!-- 其他功能超链接 --> <div id="TableTail" align="center"> <div class="FunctionButton"> <a href="${pageContext.request.contextPath }/sys/type/foodtype_save.jsp">添加</a> </div> </div> </div></body></html><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <!-- 包含公共的JSP代码片段 --><title>无线点餐平台</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script type="text/javascript" src="${pageContext.request.contextPath }/sys/style/js/jquery.js"></script><script type="text/javascript" src="${pageContext.request.contextPath }/sys/style/js/page_common.js"></script><link href="${pageContext.request.contextPath }/sys/style/css/common_style_blue.css" rel="stylesheet" type="text/css"><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/sys/style/css/index_1.css" /></head><body><!-- 页面标题 --><div id="TitleArea"> <div id="TitleArea_Head"></div> <div id="TitleArea_Title"> <div id="TitleArea_Title_Content"> <img border="0" width="13" height="13" src="${pageContext.request.contextPath }/sys/style/images/title_arrow.gif"/> 添加菜系 </div> </div> <div id="TitleArea_End"></div></div><!-- 主内容区域(数据列表或表单显示) --><div id="MainArea"> <!-- 表单内容 --> <form action="${pageContext.request.contextPath }/foodType?method=addFoodType" method="post"> <!-- 本段标题(分段标题) --> <div class="ItemBlock_Title"> <img width="4" height="7" border="0" src="${pageContext.request.contextPath }/sys/style/images/item_point.gif"> 菜系信息 </div> <!-- 本段表单字段 --> <div class="ItemBlockBorder"> <div class="ItemBlock"> <div class="ItemBlock2"> <table cellpadding="0" cellspacing="0" class="mainForm"> <tr> <td width="80px">菜系名称</td> <td> <input type="text" name="foodTypeName" class="InputStyle" value=""/> * </td> </tr> </table> </div> </div> </div> <!-- 表单操作 --> <div id="InputDetailBar"> <input type="submit" value="添加" class="FunctionButtonInput"> <a href="javascript:history.go(-1);" class="FunctionButton">返回</a> </div> </form> </div></body></html><%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <!-- 包含公共的JSP代码片段 --> <title>无线点餐平台</title><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><script type="text/javascript" src="${pageContext.request.contextPath }/sys/style/js/jquery.js"></script><script type="text/javascript" src="${pageContext.request.contextPath }/sys/style/js/page_common.js"></script><link href="${pageContext.request.contextPath }/sys/style/css/common_style_blue.css" rel="stylesheet" type="text/css"><link rel="stylesheet" type="text/css" href="${pageContext.request.contextPath }/sys/style/css/index_1.css" /></head><body><!-- 页面标题 --><div id="TitleArea"> <div id="TitleArea_Head"></div> <div id="TitleArea_Title"> <div id="TitleArea_Title_Content"> <img border="0" width="13" height="13" src="${pageContext.request.contextPath }/sys/style/images/title_arrow.gif"/> 更新菜系 </div> </div> <div id="TitleArea_End"></div></div><!-- 主内容区域(数据列表或表单显示) --><div id="MainArea"> <!-- 表单内容 --> <form action="${pageContext.request.contextPath }/foodType?method=update" method="post"> <!-- 本段标题(分段标题) --> <div class="ItemBlock_Title"> <img width="4" height="7" border="0" src="${pageContext.request.contextPath }/sys/style/images/item_point.gif"> 菜系信息 </div> <!-- 本段表单字段 --> <div class="ItemBlockBorder"> <div class="ItemBlock"> <div class="ItemBlock2"> <table cellpadding="0" cellspacing="0" class="mainForm"> <tr> <td width="80px">菜系名称</td> <td> <input type="text" name="foodTypeName" class="InputStyle" value="${foodType.typeName }"/> * <input type="hidden" name="id" value="${foodType.id }"/> </td> </tr> </table> </div> </div> </div> <!-- 表单操作 --> <div id="InputDetailBar"> <input type="submit" value="修改" class="FunctionButtonInput"> <a href="javascript:history.go(-1);" class="FunctionButton">返回</a> </div> </form></div></body></html>
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