基于XML配置方式SSM框架西蒙购物网

2023-12-24 15:51:26

文章目录

一、网站功能需求
二、网站设计思路
三、网站运行效果
四、网站实现步骤
五、利用Bootstrap框架改进网站界面

一、网站功能需求

1、只有注册用户成功登录之后才可查看商品类别，查看商品，选购商品，生成订单、查看订单。
2、只有管理员才有权限进入购物网后台管理（用户管理+类别管理+商品管理+订单管理）

二、网站设计思路

1、设计模式

分层架构：展现层（JSP）<——>控制层（Controller）<——>业务层（Service）<——>数据映射层（Mapper）<——>数据库（DB）
在这里插入图片描述

2、网站前台

（1）登录——显示商品类别——显示某类商品信息——查看购物车——生成订单——支付
（2）注册<——>登录

3、网站后台

（1）用户管理（查看用户、添加用户、修改用户、删除用户）
（2）类别管理（查看类别、添加类别、修改类别、删除类别）
（3）商品管理（查看商品、添加商品、修改商品、删除商品）
（4）订单管理（查看订单、删除订单）

4、购物流程图

在这里插入图片描述

三、网站运行效果

操作演示
登录页面
显示商品类别页面
显示商品与购物页面
生成订单页面
显示订单页面
后台管理主页面
查看用户页面

四、网站实现步骤

（一）创建数据库与表

1、创建数据库 - simonshop

在这里插入图片描述

2、创建用户表 - t_user

创建用户表结构

CREATE TABLE `t_user` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(20) NOT NULL,
  `password` varchar(20) DEFAULT NULL,
  `telephone` varchar(11) DEFAULT NULL,
  `register_time` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
  `popedom` int(11) DEFAULT NULL COMMENT '0：管理员；1：普通用户',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

在用户表里插入记录

INSERT INTO `t_user` VALUES ('1', 'admin', '12345', '15734345678', '2016-12-02 08:40:35', '0');
INSERT INTO `t_user` VALUES ('2', '郑晓红', '11111', '13956567889', '2016-12-20 09:51:43', '1');
INSERT INTO `t_user` VALUES ('3', '温志军', '22222', '13956678907', '2016-12-20 09:52:36', '1');
INSERT INTO `t_user` VALUES ('4', '涂文艳', '33333', '15890905678', '2016-12-05 09:52:56', '1');

3、创建商品类别表 - t_category

创建商品类别表结构

CREATE TABLE `t_category` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '商品类别标识符',
  `name` varchar(100) NOT NULL COMMENT '商品类别名称',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

在商品类别表里插入记录

4、创建商品表 - t_product

创建商品表结构

CREATE TABLE `t_product` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '商品标识符',
  `name` varchar(200) NOT NULL COMMENT '商品名称',
  `price` double DEFAULT NULL COMMENT '商品单价',
  `add_time` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP,
  `category_id` int(11) DEFAULT NULL COMMENT '商品类别标识符',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=16 DEFAULT CHARSET=utf8;

在商品表里插入记录

INSERT INTO `t_product` VALUES ('1', '容声电冰箱', '2000', '2016-12-20 09:54:41', '1');
INSERT INTO `t_product` VALUES ('2', '松下电视', '5000', '2016-12-20 09:54:35', '1');
INSERT INTO `t_product` VALUES ('3', '红岩墨水', '3', '2016-12-20 09:56:05', '3');
INSERT INTO `t_product` VALUES ('4', '海尔洗衣机', '1000', '2016-11-30 08:58:09', '1');
INSERT INTO `t_product` VALUES ('5', '新宇电饭煲', '1200', '2016-12-20 09:55:11', '1');
INSERT INTO `t_product` VALUES ('6', '英雄微波炉', '600', '2016-12-20 09:55:39', '1');
INSERT INTO `t_product` VALUES ('7', '红双喜席梦思', '700', '2016-11-28 08:59:38', '2');
INSERT INTO `t_product` VALUES ('8', '旺仔牛奶糖', '24.4', '2016-12-20 10:00:11', '4');
INSERT INTO `t_product` VALUES ('9', '西蒙枕头', '100', '2016-12-20 09:56:57', '2');
INSERT INTO `t_product` VALUES ('10', '甜甜毛毯', '400', '2016-12-20 09:57:26', '2');
INSERT INTO `t_product` VALUES ('11', '永久钢笔', '50', '2016-12-20 09:57:30', '3');
INSERT INTO `t_product` VALUES ('12', '硬面抄笔记本', '5', '2016-12-20 09:57:53', '3');
INSERT INTO `t_product` VALUES ('13', '晨光橡皮擦', '0.5', '2016-11-30 09:02:40', '3');
INSERT INTO `t_product` VALUES ('14', '美的空调', '3000', '2016-11-03 09:03:02', '1');
INSERT INTO `t_product` VALUES ('15', '迷你深海鱼肠', '14.4', '2016-12-02 10:01:14', '4');

5、创建订单表 - t_order

创建订单表结构

CREATE TABLE `t_order` (
  `id` int(11) NOT NULL AUTO_INCREMENT COMMENT '订单标识符',
  `username` varchar(20) DEFAULT NULL COMMENT '用户名',
  `telephone` varchar(11) DEFAULT NULL COMMENT '电话号码',
  `total_price` double DEFAULT NULL COMMENT '总金额',
  `delivery_address` varchar(50) DEFAULT NULL COMMENT '送货地址',
  `order_time` timestamp NULL DEFAULT NULL ON UPDATE CURRENT_TIMESTAMP COMMENT '下单时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

在订单表里插入记录

INSERT INTO `t_order` VALUES ('1', '郑晓红', '13956567889', '2000', '泸职院信息工程系', '2016-12-25 17:12:36');
INSERT INTO `t_order` VALUES ('2', '温志军', '13956678907', '1000', '泸职院机械工程系', '2016-12-02 17:12:17');

（二）创建Maven项目 - SSMSimonShop

在这里插入图片描述

（三）在pom.xml文件里添加相关依赖

在这里插入图片描述

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
         http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>net.hw.shop</groupId>
    <artifactId>SSMSimonShop</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <!-- spring.version -->
        <spring.version>5.2.9.RELEASE</spring.version>
    </properties>

    <dependencies>
        <!--Spring核心-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--Spring Bean-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--Spring容器-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--Spring测试-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--Spring数据库支持-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--数据库驱动工具包-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.49</version>
        </dependency>
        <!--数据库连接池框架-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.24</version>
        </dependency>
        <!--持久层框架-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.5</version>
        </dependency>
        <!--提供MyBatis与Spring整合的支持-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.5</version>
        </dependency>
        <!--日志框架-->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <!--Spring AOP-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--AspectJ支持-->
        <dependency>
            <groupId>aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>1.5.4</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.6</version>
            <scope>runtime</scope>
        </dependency>
        <!--单元测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>
        <!--Spring Web-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--Spring MVC-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--JSP标准标签库-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!--Servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

（四）创建日志属性文件 - log4j.properties

在这里插入图片描述

log4j.rootLogger=WARN, stdout, logfile
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=target/spring.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

（五）创建数据库配置属性文件 - jdbc.properties

在这里插入图片描述

jdbc.driverClassName = com.mysql.jdbc.Driver
jdbc.url = jdbc:mysql://localhost:3306/simonshop?useSSL=false
jdbc.username = root
jdbc.password = root

说明：jdbc.url有时可能还需设置编码和时区

（六）给项目添加Web功能

打开项目结构窗口，按照演示进行操作

（七）配置Tomcat服务器

单击工具栏上的【Add Configuration…】，按照演示进行操作

（八）创建实体类

1、创建用户实体类 - User

创建net.hw.shop.bean包，在包里创建User类

package net.hw.shop.bean;

import java.util.Date;

/**
 * 功能：用户实体类
 * 作者：华卫
 * 日期：2020年10月02日
 */
public class User {
    private int id;
    private String username;
    private String password;
    private String telephone;
    private Date registerTime;
    private int popedom;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    public Date getRegisterTime() {
        return registerTime;
    }

    public void setRegisterTime(Date registerTime) {
        this.registerTime = registerTime;
    }

    public int getPopedom() {
        return popedom;
    }

    public void setPopedom(int popedom) {
        this.popedom = popedom;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                ", telephone='" + telephone + '\'' +
                ", registerTime=" + registerTime +
                ", popedom=" + popedom +
                '}';
    }
}

2、创建类别实体类 - Category

在net.hw.shop.bean包里创建Category类

package net.hw.shop.bean;

/**
 * 功能：类别实体类
 * 作者：华卫
 * 日期：2020年10月02日
 */
public class Category {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Category{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}

3、创建商品实体类 - Product

在net.hw.shop.bean包里创建Product类

package net.hw.shop.bean;

import java.util.Date;

/**
 * 功能：商品实体类
 * 作者：华卫
 * 日期：2020年10月02日
 */
public class Product {
    private int id;
    private String name;
    private double price;
    private Date addTime;
    private int categoryId;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public Date getAddTime() {
        return addTime;
    }

    public void setAddTime(Date addTime) {
        this.addTime = addTime;
    }

    public int getCategoryId() {
        return categoryId;
    }

    public void setCategoryId(int categoryId) {
        this.categoryId = categoryId;
    }

    @Override
    public String toString() {
        return "Product{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", price=" + price +
                ", addTime=" + addTime +
                ", categoryId=" + categoryId +
                '}';
    }
}

4、创建订单实体类 - Order

在net.hw.shop.bean包里创建Order类

package net.hw.shop.bean;

import java.util.Date;

/**
 * 功能：订单实体类
 * 作者：华卫
 * 日期：2020年10月02日
 */
public class Order {
    private int id;
    private String username;
    private String telephone;
    private double totalPrice;
    private String deliveryAddress;
    private Date orderTime;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getTelephone() {
        return telephone;
    }

    public void setTelephone(String telephone) {
        this.telephone = telephone;
    }

    public double getTotalPrice() {
        return totalPrice;
    }

    public void setTotalPrice(double totalPrice) {
        this.totalPrice = totalPrice;
    }

    public String getDeliveryAddress() {
        return deliveryAddress;
    }

    public void setDeliveryAddress(String deliveryAddress) {
        this.deliveryAddress = deliveryAddress;
    }

    public Date getOrderTime() {
        return orderTime;
    }

    public void setOrderTime(Date orderTime) {
        this.orderTime = orderTime;
    }

    @Override
    public String toString() {
        return "Order{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", telephone='" + telephone + '\'' +
                ", totalPrice=" + totalPrice +
                ", deliveryAddress='" + deliveryAddress + '\'' +
                ", orderTime=" + orderTime +
                '}';
    }
}

（九）创建映射器接口

1、创建用户映射器接口 - UserMapper

创建net.hw.shop.mapper包，在包里创建UserMapper接口

package net.hw.shop.mapper;

import net.hw.shop.bean.User;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 功能：用户映射器接口
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Repository
public interface UserMapper {
    // 插入用户
    int insert(User user);
    // 按标识符删除用户
    int deleteById(int id);
    // 更新用户
    int update(User user);
    // 按标识符查询用户
    User findById(int id);
    // 按用户名查询用户
    List<User> findByUsername(String username);
    // 查询全部用户
    List<User> findAll();
    // 用户登录
    User login(@Param("username") String username, @Param("password") String password);
}

2、创建类别映射器接口 - CategoryMapper

在net.hw.shop.mapper包里创建CategoryMapper接口

package net.hw.shop.mapper;

import net.hw.shop.bean.Category;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 功能：类别映射器接口
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Repository
public interface CategoryMapper {
    // 插入类别
    int insert(Category category);
    // 按标识符删除类别
    int deleteById(int id);
    // 更新类别
    int update(Category category);
    // 按标识符查询类别
    Category findById(int id);
    // 查询全部类别
    List<Category> findAll();
}

3、创建商品映射器接口 - ProductMapper

在net.hw.shop.mapper包里创建ProductMapper接口

package net.hw.shop.mapper;

import net.hw.shop.bean.Product;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 功能：商品映射器接口
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Repository
public interface ProductMapper {
    // 插入商品
    int insert(Product product);
    // 按标识符删除商品
    int deleteById(int id);
    // 更新商品
    int update(Product product);
    // 按标识符查询商品
    Product findById(int id);
    // 按类别查询商品
    List<Product> findByCategoryId(int categoryId);
    // 查询全部商品
    List<Product> findAll();
}

4、创建订单映射器接口 - OrderMapper

在net.hw.shop.mapper包里创建OrderMapper接口

package net.hw.shop.mapper;

import net.hw.shop.bean.Order;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 功能：订单映射器接口
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Repository
public interface OrderMapper {
    // 插入订单
    int insert(Order order);
    // 按标识符删除订单
    int deleteById(int id);
    // 更新订单
    int update(Order order);
    // 按标识符查询订单
    Order findById(int id);
    // 查询全部订单
    List<Order> findAll();
}

（十）创建服务类

1、创建用户服务类 - UserService

在net.hw.shop包里创建service子包，然后在子包里创建UserService类

package net.hw.shop.service;

import net.hw.shop.bean.User;
import net.hw.shop.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 功能：用户服务类
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Service
@Transactional
public class UserService {
    @Autowired
    private UserMapper userMapper;

    public int addUser(User user) {
        // 避免注册相同用户名
        if (findUsersByUsername(user.getUsername()).size() == 0) {
            return userMapper.insert(user);
        } else {
            return 0;
        }
    }

    public int deleteUserById(int id) {
        return userMapper.deleteById(id);
    }

    public int updateUser(User user) {
        return userMapper.update(user);
    }

    public User findUserById(int id) {
        return userMapper.findById(id);
    }

    public List<User> findUsersByUsername(String username) {
        return userMapper.findByUsername(username);
    }

    public List<User> findAllUsers() {
        return userMapper.findAll();
    }

    public User login(String username, String password) {
        return userMapper.login(username, password);
    }
}

2、创建类别服务类 - CategoryService

在net.hw.shop.service包里创建CategoryService类

package net.hw.shop.service;

import net.hw.shop.bean.Category;
import net.hw.shop.mapper.CategoryMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 功能：
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Service
@Transactional
public class CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;

    public int addCategory(Category category) {
        return categoryMapper.insert(category);
    }

    public int deleteCategoryById(int id) {
        return categoryMapper.deleteById(id);
    }

    public int updateCategory(Category category) {
        return categoryMapper.update(category);
    }

    public Category findCategoryById(int id) {
        return categoryMapper.findById(id);
    }

    public List<Category> findAllCategories() {
        return categoryMapper.findAll();
    }
}

3、创建商品服务类 - ProductService

在net.hw.shop.service包里创建ProductService类

package net.hw.shop.service;

import net.hw.shop.bean.Product;
import net.hw.shop.mapper.ProductMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 功能：商品服务类
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Service
@Transactional
public class ProductService {
    @Autowired
    private ProductMapper productMapper;

    public int addProduct(Product product) {
        return productMapper.insert(product);
    }

    public int deleteProductById(int id) {
        return productMapper.deleteById(id);
    }

    public int updateProduct(Product product) {
        return productMapper.update(product);
    }

    public Product findProductById(int id) {
        return productMapper.findById(id);
    }

    public List<Product> findProductsByCategoryId(int categoryId) {
        return productMapper.findByCategoryId(categoryId);
    }

    public List<Product> findAllProducts() {
        return productMapper.findAll();
    }
}

4、创建订单服务类 - OrderService

在net.hw.shop.service包里创建OrderService类

package net.hw.shop.service;

import net.hw.shop.bean.Order;
import net.hw.shop.mapper.OrderMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

/**
 * 功能：订单服务类
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Service
@Transactional
public class OrderService {
    @Autowired
    private OrderMapper orderMapper;

    public int addOrder(Order order) {
        return orderMapper.insert(order);
    }

    public int deleteOrderById(int id) {
        return orderMapper.deleteById(id);
    }

    public int updateOrder(Order order) {
        return orderMapper.update(order);
    }

    public Order findOrderById(int id) {
        return orderMapper.findById(id);
    }

    public List<Order> findAllOrders() {
        return orderMapper.findAll();
    }
}

（十一）创建控制器

1、创建用户控制器 - UserController

在net.hw.shop包里创建webmvc子包，然后在子包里创建UserController类

package net.hw.shop.webmvc;

import net.hw.shop.bean.Category;
import net.hw.shop.bean.User;
import net.hw.shop.service.CategoryService;
import net.hw.shop.service.UserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.sql.Timestamp;
import java.util.List;

/**
 * 功能：用户控制器
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Controller
@RequestMapping("/user")
public class UserController {
    @Resource
    private UserService userService;
    @Resource
    private CategoryService categoryService;

    @RequestMapping("/login")
    public String login(@RequestParam("username")String username,
                        @RequestParam("password") String password,
                        HttpSession session) {
        // 调用用户服务对象的登录方法
        User user = userService.login(username, password);
        // 判断是否登录成功
        if (user != null) {
            session.setAttribute("username", username);
            session.removeAttribute("loginMsg");
            // 判断用户的角色
            if (user.getPopedom() == 0) {
                // 映射到后台管理页面
                return "backend/management";
            } else {
                List<Category> categories = categoryService.findAllCategories();
                session.setAttribute("categories", categories);
                // 映射到前台显示商品类别页面
                return "frontend/showCategory";
            }
        } else {
            session.setAttribute("loginMsg", "用户名或密码错误！");
            return "frontend/login";
        }
    }

    @RequestMapping("/register")
    public String register(@RequestParam("username")String username,
                           @RequestParam("password") String password,
                           @RequestParam("telephone") String telephone,
                           HttpSession session) {
        // 设置注册时间（时间戳对象）
        Timestamp registerTime = new Timestamp(System.currentTimeMillis());
        // 设置用户为普通用户
        int popedom = 1;
        // 创建用户对象
        User user = new User();
        // 设置用户对象信息
        user.setUsername(username);
        user.setPassword(password);
        user.setTelephone(telephone);
        user.setRegisterTime(registerTime);
        user.setPopedom(popedom);
        // 调用UserService对象添加用户方法
        int count = userService.addUser(user);
        // 判断是否注册成功
        if (count > 0) {
            session.setAttribute("registerMsg", "恭喜，注册成功！");
            // 映射到登录页面
            return "frontend/login";
        } else {
            session.setAttribute("registerMsg", "遗憾，注册失败！");
            // 映射到前台注册页面
            return "frontend/register";
        }
    }

    @RequestMapping("/showUser")
    public String showUser(HttpSession session) {
        List<User> users = userService.findAllUsers();
        session.setAttribute("users", users);
        // 映射到后台显示用户页面
        return "backend/showUser";
    }

    @RequestMapping("/logout")
    public String logout(HttpSession session) {
        // 删除会话属性
        session.removeAttribute("username");
        // 结束会话
        session.invalidate();
        // 映射到前台登录页面
        return "frontend/login";
    }
}

2、创建类别控制器 - CategoryController

在net.hw.shop.webmvc包里创建CategoryController

package net.hw.shop.webmvc;

import net.hw.shop.bean.Category;
import net.hw.shop.service.CategoryService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.List;

/**
 * 功能：类别控制器
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Controller
@RequestMapping("/category")
public class CategoryController {
    @Resource
    private CategoryService categoryService;

    @RequestMapping("/showCategory")
    public String showCategory(HttpSession session) {
        List<Category> categories = categoryService.findAllCategories();
        session.setAttribute("categories", categories);
        return "frontend/showCategory";
    }
}

3、创建商品控制器 - ProductController

在net.hw.shop.webmvc包里创建ProductControllerl类

package net.hw.shop.webmvc;

import net.hw.shop.bean.Product;
import net.hw.shop.service.CategoryService;
import net.hw.shop.service.ProductService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;

/**
 * 功能：商品控制器
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Controller
@RequestMapping("/product")
public class ProductController {
    @Resource
    private ProductService productService;
    @Resource
    private CategoryService categoryService;

    @RequestMapping("/showProduct")
    public String showProduct(@RequestParam("categoryId") int categoryId,
                              HttpSession session) {
        List<Product> products = productService.findProductsByCategoryId(categoryId);
        String categoryName = categoryService.findCategoryById(categoryId).getName();
        if (products.size() > 0) {
            session.setAttribute("categoryName", categoryName);
            session.setAttribute("products", products);
            return "frontend/showProduct";
        } else {
            return "frontend/showCategory";
        }
    }

    @RequestMapping("/operateCart")
    public String operateCart(
            @RequestParam("operation") String operation,
            @RequestParam("id") int id,
            HttpSession session) {
        // 从session里获取购物车（键：商品标识符；值：购买数量）
        LinkedHashMap<Integer, Integer> cart = (LinkedHashMap<Integer, Integer>) session.getAttribute("cart");
        // 判断购物车是否为空
        if (cart == null) {
            // 创建购物车
            cart = new LinkedHashMap<Integer, Integer>();
            // 将购物车保存到session里，便于用户在不同页面访问购物车
            session.setAttribute("cart", cart);
        }

        if (operation.equals("add")) {
            // 将商品添加到购物车
            if (cart.containsKey(id)) { // 该商品已购买过
                // 购买数量增加1
                cart.put(id, cart.get(id) + 1);
            } else { // 该商品未曾购买
                // 购买数量设置为1
                cart.put(id, 1);
            }
        } else if (operation.equals("delete")) {
            // 将商品从购物车删除
            if (cart.get(id) > 1) {
                // 购买数量减少1
                cart.put(id, cart.get(id) - 1);
            } else {
                // 从购物车里删除该商品
                cart.remove(id);
            }
        }

        // 获取该商品的类别标识符
        int categoryId = productService.findProductById(id).getCategoryId();
        // 判断购物车是否为空
        if (cart != null) {
            // 定义购物表
            List<HashMap<String, Object>> shoppingTable = new ArrayList<HashMap<String, Object>>();
            // 购物总金额
            double totalPrice = 0.0;
            // 遍历购物车
            for (Integer p_id : cart.keySet()) {
                // 获取商品对象
                Product product = productService.findProductById(p_id);
                // 生成购物表记录
                HashMap<String, Object> shoppingItem = new HashMap<String, Object>();
                shoppingItem.put("id", product.getId());
                shoppingItem.put("name", product.getName());
                shoppingItem.put("price", product.getPrice());
                shoppingItem.put("amount", cart.get(p_id));
                shoppingItem.put("sum", product.getPrice() * cart.get(p_id));
                // 将购物表记录添加到购物表中
                shoppingTable.add(shoppingItem);
                // 累加购买总金额
                totalPrice = totalPrice + (Double) shoppingItem.get("sum");
            }

            // 将购物表和购买总金额保存到session里
            session.setAttribute("shoppingTable", shoppingTable);
            session.setAttribute("totalPrice", totalPrice);
        }

        List<Product> products = productService.findProductsByCategoryId(categoryId);
        String categoryName = categoryService.findCategoryById(categoryId).getName();
        session.setAttribute("categoryId", categoryId);
        session.setAttribute("categoryName", categoryName);
        session.setAttribute("products", products);

        return "frontend/showProduct";
    }
}

4、创建订单控制器 - OrderController

在net.hw.shop.webmvc包里创建OrderController类

package net.hw.shop.webmvc;

import net.hw.shop.bean.Order;
import net.hw.shop.service.OrderService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.annotation.Resource;
import javax.servlet.http.HttpSession;
import java.util.Date;
import java.util.List;

/**
 * 功能：订单控制器
 * 作者：华卫
 * 日期：2020年10月02日
 */
@Controller
@RequestMapping("/order")
public class OrderController {
    @Resource
    private OrderService orderService;

    @RequestMapping("/makeOrder")
    public String makeOrder(@RequestParam("username") String username,
                            @RequestParam("telephone") String telephone,
                            @RequestParam("totalPrice") double totalPrice,
                            @RequestParam("deliveryAddress") String deliveryAddress,
                            HttpSession session) {
        Order order = new Order();
        order.setUsername(username);
        order.setTelephone(telephone);
        order.setTotalPrice(totalPrice);
        order.setDeliveryAddress(deliveryAddress);
        order.setOrderTime(new Date());
        int count = orderService.addOrder(order);
        if (count > 0) {
            List<Order> orders = orderService.findAllOrders();
            Order lastOrder = orders.get(orders.size()-1);
            session.setAttribute("lastOrder", lastOrder);
            return "frontend/showOrder";
        } else {
            return "frontend/showCategory";
        }
    }

    @RequestMapping("pay")
    public String pay(HttpSession session) {
        session.removeAttribute("cart");
        session.removeAttribute("shoppingTable");
        session.removeAttribute("totalPrice");
        return "frontend/showCategory";
    }

    @RequestMapping("/toMakeOrder")
    public String toMakeOrder(@RequestParam("totalPrice") double totalPrice,
                              HttpSession session) {
        if (totalPrice == 0.00) {
            session.setAttribute("orderMsg", "您还未购物呢！请您选购商品！");
            return "frontend/showProduct";
        } else {
            return "frontend/makeOrder";
        }
    }
}

（十二）创建映射器配置文件

1、创建用户映射器配置文件 - UserMapper.xml

在resources里创建mapper子目录，然后在子目录里创建UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="net.hw.shop.mapper.UserMapper">

    <resultMap id="userMap" type="net.hw.shop.bean.User">
        <result property="id" column="id"/>
        <result property="username" column="username"/>
        <result property="password" column="password"/>
        <result property="telephone" column="telephone"/>
        <result property="registerTime" javaType="java.util.Date" column="register_time" jdbcType="TIMESTAMP"/>
        <result property="popedom" column="popedom"/>
    </resultMap>

    <insert id="insert" parameterType="net.hw.shop.bean.User" keyProperty="id" useGeneratedKeys="true">
        INSERT INTO t_user (username, password, telephone, register_time, popedom)
        VALUES (#{username}, #{password}, #{telephone}, #{registerTime}, #{popedom});
    </insert>

    <update id="update" parameterType="net.hw.shop.bean.User">
        UPDATE t_user SET username = #{username}, password = #{password},
          telephone = #{telephone}, register_time = #{registerTime}, popedom = #{popedom}
        WHERE id = #{id};
    </update>

    <delete id="deleteById" parameterType="int">
        DELETE from t_user WHERE id = #{id};
    </delete>

    <select id="findAll" resultMap="userMap">
        SELECT * FROM t_user;
    </select>

    <select id="findById" parameterType="int" resultMap="userMap">
        SELECT * FROM t_user WHERE id = #{id};
    </select>

    <select id="findByUsername" parameterType="string" resultMap="userMap">
        SELECT * FROM t_user WHERE username LIKE CONCAT(#{username},'%')
    </select>

    <select id="login" resultMap="userMap">
        SELECT * FROM t_user WHERE username = #{username} AND password = #{password};
    </select>

</mapper>

2、创建类别映射器配置文件 - CategoryMapper.xml

在resources/mapper目录里创建CategoryMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="net.hw.shop.mapper.CategoryMapper">
    <select id="findById" parameterType="int" resultType="net.hw.shop.bean.Category">
        SELECT * FROM t_category WHERE id = #{id}
    </select>

    <select id="findAll" resultType="net.hw.shop.bean.Category">
        SELECT * FROM t_category;
    </select>

    <insert id="insert" parameterType="net.hw.shop.bean.Category" keyProperty="id" useGeneratedKeys="true">
        INSERT INTO t_user (name)  VALUES (#{name});
    </insert>

    <update id="update" parameterType="net.hw.shop.bean.Category">
        UPDATE t_category SET name = #{name} WHERE id = #{id};
    </update>

    <delete id="deleteById" parameterType="int">
        DELETE from t_category WHERE id = #{id};
    </delete>

</mapper>

3、创建商品映射器配置文件 - ProductMapper.xml

在resources/mapper目录里创建ProductMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="net.hw.shop.mapper.ProductMapper">

    <resultMap id="productMap" type="net.hw.shop.bean.Product">
        <result property="id" column="id"/>
        <result property="name" column="name"/>
        <result property="price" column="price"/>
        <result property="addTime" column="add_time"/>
        <result property="categoryId" column="category_id"/>
    </resultMap>

    <select id="findAll" resultMap="productMap">
        SELECT * FROM t_product;
    </select>

    <select id="findByCategoryId" parameterType="int" resultMap="productMap">
        SELECT * FROM t_product WHERE category_id = #{categoryId};
    </select>

    <select id="findById" parameterType="int" resultMap="productMap">
        SELECT * FROM t_product WHERE id = #{id};
    </select>

    <insert id="insert" parameterType="net.hw.shop.bean.Product" keyProperty="id" useGeneratedKeys="true">
        INSERT INTO t_product (name, price, add_time, category_id)
        VALUES (#{name}, #{price}, #{addTime}, #{categoryId});
    </insert>

    <update id="update" parameterType="net.hw.shop.bean.Product">
        UPDATE t_product SET name = #{name}, price = #{price},
         add_time = #{addTime}, category_id = #{categoryId} WHERE id = #{id};
    </update>

    <delete id="deleteById" parameterType="int">
        DELETE from t_product WHERE id = #{id};
    </delete>

</mapper>

4、创建订单映射器配置文件 - OrderMapper.xml

在resources/mapper目录里创建OrderMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="net.hw.shop.mapper.OrderMapper">

    <resultMap id="orderMap" type="net.hw.shop.bean.Order">
        <result property="id" column="id"/>
        <result property="username" column="username"/>
        <result property="telephone" column="telephone"/>
        <result property="totalPrice" column="total_price"/>
        <result property="deliveryAddress" column="delivery_address"/>
        <result property="orderTime" column="order_time"/>
    </resultMap>

    <select id="findAll" resultMap="orderMap">
        SELECT * FROM t_order;
    </select>

    <select id="findById" parameterType="int" resultMap="orderMap">
        SELECT * FROM t_order WHERE id = #{id};
    </select>

    <insert id="insert" parameterType="net.hw.shop.bean.Order" keyProperty="id" useGeneratedKeys="true">
        INSERT INTO t_order (username, telephone, total_price, delivery_address, order_time)
        VALUES (#{username}, #{telephone}, #{totalPrice}, #{deliveryAddress}, #{orderTime});
    </insert>

    <update id="update" parameterType="net.hw.shop.bean.Order">
        UPDATE t_order SET username = #{username}, telephone = #{telephone},
         total_price = #{totalPrice}, delivery_address = #{deliveryAddress},
         order_time = #{orderTime} WHERE id = #{id};
    </update>

    <delete id="deleteById" parameterType="int">
        DELETE from t_order WHERE id = #{id};
    </delete>

</mapper>

（十三）创建Spring配置文件 - spring-config.xml

在resources里创建config子目录，然后在子目录里创建spring-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!--组件扫描-->
    <context:component-scan base-package="net.hw.shop"/>

    <!--读取jdbc属性文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!-- 定义数据源Bean，使用阿里开源Druid数据源实现 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <!-- 基本属性 url、user、password -->
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="driverClassName" value="${jdbc.driverClassName}"/>

        <!-- 配置初始化大小、最小、最大 -->
        <property name="initialSize" value="10"/>
        <property name="minIdle" value="10"/>
        <property name="maxActive" value="200"/>

        <!-- 配置获取连接等待超时的时间 -->
        <property name="maxWait" value="6000"/>

        <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
        <property name="timeBetweenEvictionRunsMillis" value="60000"/>

        <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
        <property name="minEvictableIdleTimeMillis" value="300000"/>

        <property name="validationQuery" value="SELECT 'x'"/>
        <property name="testWhileIdle" value="true"/>
        <property name="testOnBorrow" value="true"/>
        <property name="testOnReturn" value="false"/>

        <!-- 打开PSCache，并且指定每个连接上PSCache的大小 -->
        <property name="poolPreparedStatements" value="true"/>
        <property name="maxPoolPreparedStatementPerConnectionSize" value="100"/>

        <!-- 配置监控统计拦截的filters，去掉后监控界面sql无法统计 -->
        <property name="filters" value="stat"/>
    </bean>

    <!--定义MyBatis的SqlSessionFactory-->
    <bean id="sqlSessionFactory"
          class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!--使用MapperScannerConfigurer查找类路径下映射器并自动将其实例化为MapperFactoryBean-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="net.hw.shop.mapper" />
    </bean>

    <!--定义事务管理器-->
    <bean id="txManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 事务注解驱动，标注@Transactional的类和方法将具有事务性 -->
    <tx:annotation-driven transaction-manager="txManager" />

    <!--定义事务管理通知-->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--声明式事务通知器，需要在pom.xml里添加基于AspectJ的AOP支持-->
    <aop:config>
        <aop:pointcut id="mypt" expression="execution(public * net.hw.shop.service..*.*(..))"/>
        <:advisor advice-ref="txAdvice" pointcut-ref="mypt"/>
    </aop:config>

</beans>

（十四）创建Spring MVC配置文件 - spring-mvc-config.xml

在resources/config目录里创建spring-mvc-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <!--处理对静态资源的请求-->
    <mvc:resources mapping="/css/**" location="/WEB-INF/css/"/>
    <mvc:resources mapping="/scripts/**" location="/WEB-INF/scripts/"/>
    <mvc:resources mapping="/images/**" location="/WEB-INF/images/"/>

    <!--采用注解驱动-->
    <mvc:annotation-driven/>

    <!--定义视图控制器-->
    <mvc:view-controller path="toLeft" view-name="backend/left" />
    <mvc:view-controller path="toTop" view-name="backend/top" />
    <mvc:view-controller path="toMain" view-name="backend/main" />
    <mvc:view-controller path="todo" view-name="backend/todo" />
    <mvc:view-controller path="user/toRegister" view-name="frontend/register" />
    <mvc:view-controller path="user/toLogin" view-name="frontend/login" />

    <!--扫描添加Controller注解的类-->
    <context:component-scan base-package="net.hw.shop.webmvc"/>

    <!--定义内部资源视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:viewClass="org.springframework.web.servlet.view.JstlView"
          p:prefix="/WEB-INF/views/"
          p:suffix=".jsp"/>

    <!-- 扫描业务组件,让spring不扫描带有@Service注解的类(留在spring-config.xml中扫描@Service注解的类),防止事务失效 -->
    <context:component-scan base-package="net.hw.shop">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Service"/>
    </context:component-scan>

</beans>

（十五）编辑Web部署描述文件 - web.xml

在这里插入图片描述

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
         http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <display-name>simonshop</display-name>
    <welcome-file-list>
        <welcome-file>/WEB-INF/views/frontend/login.jsp</welcome-file>
    </welcome-file-list>

    <!--Spring监听器，让Spring随Web项目启动而初始化-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 指定Spring配置文件位置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:config/spring-config.xml</param-value>
    </context-param>

    <!--配置Spring前端控制器，通过初始化参数设置读取控制器配置文件-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:config/spring-mvc-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--设置字符编码过滤器-->
    <filter>
        <filter-name>Character Encoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>Character Encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

（十六）准备图片资源

案例所用图片资源
在WEB-INF里创建images目录，用来存放图片资源

（十七）创建样式文件 - main.css

在WEB-INF里创建css子目录，然后在子目录里创建main.css

/* 样式 */
body {
    margin:0px;
    text-align:center;
    background:url("../images/frontBack.jpg") no-repeat;
    background-size:100%
}

table {
    margin: 0 auto;
    font-size:14px;
    color:#333333;
    border-width: 1px;
    border-color: khaki;
    border-collapse: collapse;
}

table th {
    border-width: 1px;
    padding: 8px;
    border-style: solid;
    border-color: gainsboro;
    background-color: honeydew;
}

table td {
    border-width: 1px;
    padding: 8px;
    border-style: solid;
    border-color: gainsboro;
    background-color: #ffffff;
}

/*登录页面样式*/
.login {
    width:400px;
    height: 340px;
    background-color: honeydew;
    border: solid 2px darkgrey;
    left:50%;
    top: 50%;
    position: absolute;
    margin: -170px 0 0 -200px;
}

.login .websiteTitle, .title {
    border: solid 1px floralwhite;
}

/*注册页面样式*/
.register {
    width:400px;
    height: 350px;
    background-color: honeydew;
    border: solid 2px darkgrey;
    left:50%;
    top: 50%;
    position: absolute;
    margin: -175px 0 0 -200px;
}

/*显示类别页面样式*/
.showCategory {
    width:400px;
    height: 350px;
    background-color: honeydew;
    border: solid 2px darkgrey;
    left:50%;
    top: 50%;
    position: absolute;
    margin: -150px 0 0 -200px;
}

/*生成订单页面样式*/
.makeOrder {
    width:400px;
    height: 400px;
    background-color: honeydew;
    border: solid 2px darkgrey;
    left:50%;
    top: 50%;
    position: absolute;
    margin: -200px 0 0 -200px;
}

/*显示订单页面样式*/
.showOrder {
    width:400px;
    height: 400px;
    background-color: honeydew;
    border: solid 2px darkgrey;
    left:50%;
    top: 50%;
    position: absolute;
    margin: -200px 0 0 -200px;
}

（十八）创建脚本文件 - check.js

在WEB-INF里创建scripts子目录，然后在子目录里创建check.js

/**
 * 检验登录表单
 * 
 * @returns {Boolean}
 */
function checkLoginForm() {    
   // 获取用户名文本框
   var username = document.getElementById("username");
   // 获取密码文本框
   var password = document.getElementById("password");
   // 非空校验
   if (username.value == "") {
      alert("用户名不能为空！");
      // 让用户名文本框获得焦点
      username.focus();
      return false;
   }
   if (password.value == "") {
      alert("密码不能为空！");
      // 让密码文本框获得焦点
      password.focus();
      return false;
   }  
      
   return true; // 表明可以提交数据到服务器端
}
 
/**
 * 检验注册表单
 * @returns {Boolean}
 */
function checkRegisterForm() {
   // 获取用户名文本框
   var username = document.getElementById("username");
   // 获取密码文本框
   var password = document.getElementById("password");
   // 获取手机号码文本框
   var telephone = document.getElementById("telephone");
   
   // 非空校验
   if (username.value == "") {
      alert("用户名不能为空！");
      // 让用户名文本框获得焦点
      username.focus();
      return false;
   }
   if (password.value == "") {
      alert("密码不能为空！");
      // 让密码文本框获得焦点
      password.focus();
      return false;
   }        
   
   // 检验手机号码
   var patrn = "/^(13[0-9]|14[0-9]|15[0-9]|18[0-9])\d{8}$/";
   if (!patrn.test(telephone)) {
      alert("非法手机号！");
      // 让手机号码文本框获得焦点
      telephone.focus();
      return false;
   }
      
   return true; // 表明可以提交数据到服务器端
}

（十九）创建页面

1、创建目录结构

在WEB-INF里创建views目录，然后在里面创建frontend和backend两个子目录

2、前台页面

（1）创建登录页面 - login.jsp

在views/frontend里创建login.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>用户登录</title>
    <base href="${basePath}">
    <script src="scripts/check.js" type="text/javascript"></script>
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>

<div class="login">
    <div class="websiteTitle">
        <h1>西蒙购物网</h1>
    </div>
    <div class="title">
        <h3>用户登录</h3>
    </div>
    <div class="main">
        <form id="frmLogin" action="user/login" method="post">
            <table>
                <tr>
                    <td align="center">账号</td>
                    <td><input id="username" type="text" name="username"/></td>
                </tr>
                <tr>
                    <td align="center">密码</td>
                    <td><input id="password" type="password" name="password"/></td>
                </tr>
                <tr align="center">
                    <td colspan="2">
                        <input type="submit" value="登录" onclick="return checkLoginForm();"/>
                        <input type="reset" value="重置"/>
                    </td>
                </tr>
            </table>
        </form>
    </div>
    <div class="footer">
        <p>如果你不是本站用户，单击<a href="user/toRegister">此处</a>注册。</p>
    </div>
</div>

<c:if test="${registerMsg!=null}">
    <script type="text/javascript">alert("${registerMsg}")</script>
    <c:remove var="registerMsg"/>
</c:if>

<c:if test="${loginMsg!=null}">
    <script type="text/javascript">alert("${loginMsg}")</script>
    <c:remove var="loginMsg"/>
</c:if>
</body>
</html>

（2）创建注册页面 - register.jsp

在views/frontend里创建register.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>用户注册</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
    <script src="scripts/check.js" type="text/javascript"></script>
</head>
<body>

<div class="register">
    <div class="websiteTitle">
        <h1>西蒙购物网</h1>
    </div>
    <div class="title">
        <h3>用户注册</h3>
    </div>
    <div class="main">
        <form action="user/register" method="post">
            <table>
                <tr>
                    <td>账号</td>
                    <td><input id="username" type="text" name="username"/></td>
                </tr>
                <tr>
                    <td>密码</td>
                    <td><input id="password" type="password" name="password"/></td>
                </tr>
                <tr>
                    <td align="center">电话</td>
                    <td><input id="telephone" type="text" name="telephone"/></td>
                </tr>
                <tr align="center">
                    <td colspan="2">
                        <input type="submit" value="注册" onclick="return checkRegisterForm();"/>
                        <input type="reset" value="重置"/></td>
                </tr>
            </table>
        </form>
    </div>
    <div class="footer">
        <p><a href="user/toLogin">切换到登录页面</a></p>
    </div>
</div>

<c:if test="${registerMsg!=null}">
    <script type="text/javascript">alert("${registerMsg}")</script>
    <c:set var="registerMsg" value=""/>
</c:if>
</body>
</html>

（3）创建显示类别页面 - showCategory.jsp

在views/frontend里创建showCategory.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>显示商品类别</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>

<div class="showCategory">
    <div class="websiteTitle">
        <h1>西蒙购物网</h1>
    </div>
    <div>
        登录用户：<span style="color: red;">${username}</span>
        <c:forEach var="i" begin="1" end="5">
             
        </c:forEach>
        <a href="user/logout">注销</a>
    </div>
    <div class="title">
        <h3>商品类别</h3>
    </div>
    <div class="main">
        <table>
            <tr>
                <th>类别编号</th>
                <th>商品类别</th>
            </tr>
            <c:forEach var="category" items="${categories}">
                <tr align='center'>
                    <td>${category.id}</td>
                    <td width="150">
                        <a href="product/showProduct?categoryId=${category.id}">${category.name}</a>
                    </td>
                </tr>
            </c:forEach>
        </table>
    </div>
</div>
</body>
</html>

（4）创建显示商品页面 - showProduct.jsp

在views/frontend里创建showProduct.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>显示商品信息</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<h1>西蒙购物网</h1>
<hr width="700px">
登录用户：<span style="color: red;">${username}</span>
<c:forEach var="i" begin="1" end="5">
     
</c:forEach>
<a href="user/logout">注销</a></td>
<hr width="700px">
欢迎选购【<span style="color: blue; font-weight: bold;">${categoryName}</span>】类商品
<hr width="700px">
<table border="0">
    <c:forEach varStatus="status" var="product" items="${products}">
        <c:if test="${status.count%5==0}">
            <tr>
        </c:if>
        <td>
            <table border="0">
                <tr><img src="images/product${product.id}.jpg" width="60px" height="60px"></tr>
                <tr>
                    <td><b>商品编号：</b></td>
                    <td>${product.id}</td>
                </tr>
                <tr>
                    <td><b>商品名称：</b></td>
                    <td>${product.name}</td>
                </tr>
                <tr>
                    <td><b>销售价格：</b></td>
                    <td>${product.price}</td>
                </tr>
                <tr>
                    <td><b>上架时间：</b></td>
                    <td><fmt:formatDate value="${product.addTime}" pattern="yyyy-MM-dd"/></td>
                </tr>
                <tr>
                    <td><b>用户操作：</b></td>
                    <td><a href="product/operateCart?id=${product.id}&operation=add">加入购物车</a></td>
                </tr>
            </table>
        </td>
        <c:if test="${status.count%4==0}">
            </tr>
        </c:if>
    </c:forEach>
</table>
<hr width="700px">
<a href="category/showCategory">返回商品类别页面</a>
<hr width="700px">
<jsp:include page="showCart.jsp"/>
</body>
</html>

（5）创建显示购物车页面 - showCart.jsp

在views/frontend里创建showCart.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>显示购物车</title>
    <base href="${basePath}">
</head>
<body>
<h3>${username}的购物车</h3>
<table>
    <tr>
        <th>商品编号</th>
        <th>商品名称</th>
        <th>销售价格</th>
        <th>购买数量</th>
        <th>合计金额</th>
        <th>用户操作</th>
    </tr>
    <c:forEach var="shoppingItem" items="${shoppingTable}">
        <tr>
            <td>${shoppingItem.id}</td>
            <td>${shoppingItem.name}</td>
            <td>￥${shoppingItem.price}</td>
            <td>${shoppingItem.amount}</td>
            <td>￥${shoppingItem.sum}</td>
            <td><a href="product/operateCart?id=${shoppingItem.id}&operation=delete">删除</a></td>
        </tr>
    </c:forEach>
    <tr>
        <th>总金额</th>
        <td></td>
        <td></td>
        <td></td>
        <c:choose>
            <c:when test="${totalPrice==null}">
                <th style="color: red">￥0.00</th>
            </c:when>
            <c:otherwise>
                <th style="color: red">￥${totalPrice}</th>
            </c:otherwise>
        </c:choose>
        <td></td>
    </tr>
</table>
<hr width="800px">
<c:choose>
    <c:when test="${totalPrice==null}">
        <a href="order/toMakeOrder?totalPrice=0.00">生成订单</a>
    </c:when>
    <c:otherwise>
        <a href="order/toMakeOrder?totalPrice=${totalPrice}">生成订单</a>
    </c:otherwise>
</c:choose>
<c:if test="${orderMsg!=null}">
    <script type="text/javascript">alert("${orderMsg}")</script>
    <c:remove var="orderMsg"/>
</c:if>
</body>
</html>

（6）创建生成订单页面 - makeOrder.jsp

在views/frontend里创建makeOrder.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>生成订单</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div class="makeOrder">
    <div class="websiteTitle">
        <h1>西蒙购物网</h1>
    </div>
    <div>
        登录用户：<span style="color: red;">${username}</span>
        <c:forEach var="i" begin="1" end="5">
             
        </c:forEach>
        <a href="user/logout">注销</a>
    </div>
    <div class="title">
        <h3>生成订单</h3>
    </div>
    <div class="main">
        <form action="order/makeOrder" method="post">
            <table>
                <tr>
                    <td>用户名</td>
                    <td><input type="text" name="username" readonly="readonly"
                               value="${username}"/></td>
                </tr>
                <tr>
                    <td>联系电话</td>
                    <td><input type="text" name="telephone"/></td>
                </tr>
                <tr>
                    <td>总金额</td>
                    <td><input type="text" name="totalPrice" readonly="readonly"
                               value="${totalPrice}"/></td>
                </tr>
                <tr>
                    <td>送货地址</td>
                    <td><input type="text" name="deliveryAddress"/></td>
                </tr>
                <tr align="center">
                    <td colspan="2"><input type="submit" value="生成订单"/> <input
                            type="reset" value="重置"/></td>
                </tr>
            </table>
        </form>
    </div>
    <div class="footer">
        <p><a href="category/showCategory">返回商品类别页面</a></p>
    </div>
</div>
</body>
</html>

（7）创建显示订单页面 - showOrder.jsp

在views/frontend里创建showOrder.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>显示订单</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<div class="showOrder">
    <div class="websiteTitle">
        <h1>西蒙购物网</h1>
    </div>
    <div>
        登录用户：<span style="color: red;">${username}</span>
        <c:forEach var="i" begin="1" end="5">
             
        </c:forEach>
        <a href="user/logout">注销</a>
    </div>
    <div class="title">
        <h3>生成订单</h3>
    </div>
    <div class="main">
        <table border="1" cellspacing="0">
            <tr>
                <th>订单编号</th>
                <td>${lastOrder.id}</td>
            </tr>
            <tr>
                <th>用户名</th>
                <td>${lastOrder.username}</td>
            </tr>
            <tr>
                <th>联系电话</th>
                <td>${lastOrder.telephone}</td>
            </tr>
            <tr>
                <th>总金额</th>
                <td>${lastOrder.totalPrice}</td>
            </tr>
            <tr>
                <th>送货地址</th>
                <td>${lastOrder.deliveryAddress}</td>
            </tr>
        </table>
    </div>
    <div class="footer">
        <p><a href="order/pay" onclick="alert('${lastOrder.username}，支付成功！')">支付</a></p>
    </div>
</div>
</body>
</html>

3、后台页面

（1）创建后台管理主页面 - management.jsp

在views/backend里创建management.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>西蒙购物网站后台管理</title>
    <base href="${basePath}">
</head>
<frameset rows="30%,70%" cols="*">
    <frame src="toTop" name="top_frame" scrolling="no">
    <frameset rows="*" cols="25%,75%">
        <frame src="toLeft" name="left_frame" scrolling="yes">
        <frame src="toMain" name="main_frame" scrolling="yes">
    </frameset>
</frameset>
</html>

（2）创建后台管理主页面左面板 - left.jsp

在views/backend里创建left.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>后台管理左面板</title>
    <base href="${basePath}">
    <link rel="stylesheet" type="text/css">
    <script type="text/javascript">
        function show(id) {
            var obj = document.getElementById('c_' + id);
            if (obj.style.display == 'block') {
                obj.style.display = 'none';
            } else {
                obj.style.display = 'block';
            }
        }
    </script>
</head>

<body>
<table cellSpacing=0 cellPadding=0 width='100%' border=0>
    <tbody>
    <tr>
        <td class=catemenu> <a
                style='CURSOR: pointer' onclick=show(1)><img src="images/folder.png">用户管理</a>
        </td>
    </tr>
    <tbody id=c_1>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a
                href="user/showUser" target="main_frame">查看用户</a></td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">添加用户</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">更新用户</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">删除用户</a>
        </td>
    </tr>
    </tbody>

    <tbody>
    <tr>
        <td class=catemenu> <a
                style='CURSOR: pointer' onclick=show(2)><img src="images/folder.png">
            类别管理</a></td>
    </tr>
    <tbody id=c_2 style='DISPLAY: none'>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">查看类别</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">添加类别</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">更新类别</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">删除类别</a>
        </td>
    </tr>
    </tbody>

    <tbody>
    <tr>
        <td class=catemenu> <a
                style='CURSOR: pointer' onclick=show(3)><img src="images/folder.png">
            商品管理</a></td>
    </tr>
    <tbody id=c_3 style='DISPLAY: none'>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">查看商品</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">添加商品</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">更新商品</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">删除商品</a>
        </td>
    </tr>
    </tbody>

    <tbody>
    <tr>
        <td class=catemenu> <a
                style='CURSOR: pointer' onclick=show(4)><img src="images/folder.png">
            订单管理</a></td>
    </tr>
    <tbody id=c_4 style='DISPLAY: none'>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">查看订单</a>
        </td>
    </tr>
    <tr>
        <td class=bar2 height=20>  <img src="images/file.png"> <a href="todo" target="main_frame">删除订单</a>
        </td>
    </tr>
    </tbody>
</table>
</body>
</html>

（3）创建后台管理主页面顶面板top.jsp

在views/backend里创建top.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>后台管理顶面板</title>
    <base href="${basePath}">
</head>

<body style="margin:0px">
<img src="images/title.png" width="100%" height="100%">
</body>
</html>

（4）创建后台管理主页面主面板main.jsp

在views/backend里创建main.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>后台管理主面板</title>
    <base href="${basePath}">
</head>

<body>
<img src="images/mainBack.gif" width="100%" height="100%"/>
</body>
</html>

（5）创建查看用户页面showUser.jsp

在views/backend里创建showUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>

<c:set var="path" value="${pageContext.request.contextPath}"/>
<c:set var="basePath"
       value="${pageContext.request.scheme}://${pageContext.request.serverName}:${pageContext.request.serverPort}${path}/"/>
<!DOCTYPE html>
<html>
<head>
    <title>显示用户信息</title>
    <base href="${basePath}">
    <link href="css/main.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<hr>
<table width="90%" border="0px">
    <tr>
        <td align="left">登录用户：<span style="color: red;">${username}</span></td>
        <td align="right"><a href="user/logout" target="_parent">注销</a></td>
    </tr>
</table>
<hr>
<h3>用户列表</h3>
<hr>
<table border="1" width="90%" cellspacing="0">
    <tr>
        <th>编号</th>
        <th>用户名</th>
        <th>密码</th>
        <th>电话</th>
        <th>注册时间</th>
        <th>权限</th>
    </tr>
    <c:forEach var="user" items="${users}">
        <tr align="center">
            <td>${user.id}</td>
            <td>${user.username}</td>
            <td>${user.password}</td>
            <td>${user.telephone}</td>
            <td><fmt:formatDate value="${user.registerTime}" pattern="yyyy-MM-dd hh:mm:ss"/></td>
            <td>
                <c:choose>
                    <c:when test="${user.popedom==0}">
                        管理员
                    </c:when>
                    <c:otherwise>
                        普通用户
                    </c:otherwise>
                </c:choose>
            </td>
        </tr>
    </c:forEach>
</table>
<hr>
</body>
</html>

（6）创建待做页面todo.jsp

在views/backend里创建todo.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>待做页面</title>
</head>
<body>
<h1 style="text-align: center">抱歉，页面正在维护中……</h1>
</body>
</html>

（二十）启动服务器，查看效果

在这里插入图片描述

（二十一）待完成功能

后台管理模块，只完成了查看用户功能，其余功能，等待有兴趣的同学自行完成。

五、利用Bootstrap框架改进网站界面

在这里插入图片描述

文章来源:https://blog.csdn.net/howard2005/article/details/135181993
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