五，（实战，非知识点）用一个简单的项目去理解SSM架构

通过一个简单的项目案例整合[Spring+Mybatis+SpringMVC]

● Java
● Spring
● Spring
● SpringMVC
● Mybatis
（首字母缩写，SSM）
本片文章是对Spring+Mybatis+SpringMVC三框架的整合总结，将会通过一个简单的项目案例进行整合。

1. 前言
   本片文章是对Spring+Mybatis+SpringMVC三框架的整合总结，将会通过一个简单的项目案例进行整合。
   1.1 MVC架构
   先通过一张图回顾一下MVC架构模式：

● MVC是模型(Model)、视图(View)、控制器(Controller)的简写，是一种软件设计规范。
● MVC将业务逻辑、数据、视图分离的方法来组织代码。
● MVC主要作用是降低了视图与业务逻辑间的双向偶合。
● MVC不是一种设计模式，MVC是一种架构模式。不同的MVC存在差异。
Model层: 在模型层中又可以分为两层，即Service层和Dao层,这两层的主要功能是：
● Service层: 负责一些业务处理，比如说：获取数据库连接，关闭数据库连接，事务回滚或者一些复杂的逻辑业务处理
● Dao层：(Database Accept Object) 负责访问数据库，对数据的操作，获取结果集，将结果集中的数据装到OV（Object Value）对象中，之后再返回给Service层
Controller层：主要功能是接收用户请求，委托给模型进行处理（状态改变），处理完毕后把返回的模型数据返回给视图，由视图负责展示。也就是说控制器做了个调度员的工作。
View层：主要负责显示数据（Html、Css、jQuery等等）,一般就是我们见到的用户界面，客户想看到的东西。
MVC框架要做哪些事情

1. 将url映射到java类或java类的方法 .
2. 封装用户提交的数据 .
3. 处理请求–调用相关的业务处理–封装响应数据 .
4. 将响应的数据进行渲染 . jsp / html 等表示层数据 .
   1.2 项目最终效果图
   这个简单项目的最终效果图如下：实现对书籍的增删改查功能

下面正式开整

2. 开发环境准备
   ● IDEA2023极其以上
   ● MySQL （5.0）或者（8.0）
   ● Tomcat 9
   ● Maven 3.6.3

3. 数据库表books
   在forstudy数据库下，创建一个存放书籍数据的数据库表books表：
   先创建一个数据库，名为forstudy ( 含义 “for study”一切都是为了学习！！！！！！！)

CREATE TABLE books (
                         bookID INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
                         bookName VARCHAR(100) NOT NULL COMMENT '书名',
                         bookCounts INT(11) NOT NULL COMMENT '数量',
                         detail VARCHAR(200) NOT NULL COMMENT '描述',
                         KEY bookID (bookID)
) ENGINE=INNODB DEFAULT CHARSET=utf8;
INSERT  INTO books(bookID,bookName,bookCounts,detail)VALUES
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

4. pom.xml
   这里将会导入所有需要的依赖

          SpringMVC
   

<groupId>cn.bithachi</groupId>

<version>1.0-SNAPSHOT</version>

</parent>

<modelVersion>4.0.0</modelVersion>

<artifactId>ssm-build</artifactId>

<dependencies>
  <!--Junit-->
  <dependency>
    <groupId>junit</groupId>

    <artifactId>junit</artifactId>

    <version>4.12</version>

  </dependency>

  <!--数据库驱动-->
  <dependency>
    <groupId>mysql</groupId>

    <artifactId>mysql-connector-java</artifactId>

    <version>5.1.47</version>

  </dependency>

  <!-- 数据库连接池 -->
  <dependency>
    <groupId>com.mchange</groupId>

    <artifactId>c3p0</artifactId>

    <version>0.9.5.2</version>

  </dependency>

  <!--Servlet - JSP -->
  <dependency>
    <groupId>javax.servlet</groupId>

    <artifactId>servlet-api</artifactId>

    <version>2.5</version>

  </dependency>

  <dependency>
    <groupId>javax.servlet.jsp</groupId>

    <artifactId>jsp-api</artifactId>

    <version>2.2</version>

  </dependency>

  <dependency>
    <groupId>javax.servlet</groupId>

    <artifactId>jstl</artifactId>

    <version>1.2</version>

  </dependency>

  <!--Mybatis-->
  <dependency>
    <groupId>org.mybatis</groupId>

    <artifactId>mybatis</artifactId>

    <version>3.5.2</version>

  </dependency>

  <!--Mybatis整合需要的mybatis-spring-->
  <dependency>
    <groupId>org.mybatis</groupId>

    <artifactId>mybatis-spring</artifactId>

    <version>2.0.6</version>

  </dependency>

  <!--Spring-->
  <dependency>
    <groupId>org.springframework</groupId>

    <artifactId>spring-webmvc</artifactId>

    <version>5.1.9.RELEASE</version>

  </dependency>

  <dependency>
    <groupId>org.springframework</groupId>

    <artifactId>spring-jdbc</artifactId>

    <version>5.2.11.RELEASE</version>

  </dependency>

  <!--配置AOP，切面织入-->
  <dependency>
    <groupId>org.aspectj</groupId>

    <artifactId>aspectjweaver</artifactId>

    <version>1.9.6</version>

  </dependency>

</dependencies>

<!--Maven资源过滤设置,使src下的非java文件被编译，不要被过滤，比如SQL映射文件-->
<build>
  <resources>
    <resource>
      <directory>src/main/java</directory>

      <includes>
        <include>**/*.properties</include>

        <include>**/*.xml</include>

      </includes>

      <filtering>false</filtering>

    </resource>

    <resource>
      <directory>src/main/resources</directory>

      <includes>
        <include>**/*.properties</include>

        <include>**/*.xml</include>

      </includes>

      <filtering>false</filtering>

    </resource>

  </resources>

</build>

5. 项目目录结构

这里直接显示最终的目录结构，我们将会在后面一步一步配置

6. IDEA之lib目录

我们最终所有的依赖都需要添加到lib目录中，否则会报错

7. resources

7.1 database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/forstudy?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

7.2 applicationContext.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">
    <import resource="spring-dao.xml"/>
    <import resource="spring-service.xml"/>
    <import resource="spring-mvc.xml"/>
</beans>

7.3 mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <!--配置日志-->
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
    <!--指定一个包名，MyBatis 会在包名下面搜索需要的 Java Bean-->
    <typeAliases>
        <package name="cn.bithachi.pojo"/>
    </typeAliases>
    <!--配置SQL映射文件的位置-->
    <mappers>
        <mapper resource="cn/bithachi/dao/BookMapper.xml"/>
    </mappers>
</configuration>

7.4 spring-dao.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: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/context
       https://www.springframework.org/schema/context/spring-context.xsd">
    <!-- 配置整合mybatis -->
    <!-- 1.关联数据库配置文件 -->
    <context:property-placeholder location="classpath:database.properties"/>
    <!-- 2.数据库连接池 -->
    <!--数据库连接池
        dbcp 半自动化操作 不能自动连接
        c3p0 自动化操作（自动的加载配置文件 并且设置到对象里面）
    -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 配置连接池属性 -->
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!-- c3p0连接池的私有属性 -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 关闭连接后不自动commit -->
        <property name="autoCommitOnClose" value="false"/>
        <!-- 获取连接超时时间 -->
        <property name="checkoutTimeout" value="10000"/>
        <!-- 当获取连接失败重试次数 -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>
    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 配置MyBaties全局配置文件:mybatis-config.xml -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>
    <!-- 4.配置扫描Dao接口包，动态实现Dao接口注入到spring容器中 -->
    <!--解释 ：https://www.cnblogs.com/jpfss/p/7799806.html-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="cn.bithachi.dao"/>
    </bean>
</beans>

7.5 spring-mvc.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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       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/mvc
   https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <!-- 配置SpringMVC -->
    <!-- 1.开启SpringMVC注解驱动
        在spring中一般采用@RequestMapping注解来完成映射关系
        要想使@RequestMapping注解生效
        必须向上下文中注册DefaultAnnotationHandlerMapping
        和一个AnnotationMethodHandlerAdapter实例
        这两个实例分别在类级别和方法级别处理。
        而annotation-driven配置帮助我们自动完成上述两个实例的注入。
     -->
    <mvc:annotation-driven />
    <!-- 2.静态资源默认servlet配置，让Spring MVC不处理静态资源 js html css mp4 mp3…… -->
    <mvc:default-servlet-handler/>
    <!-- 3.配置ViewResolver视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
        <!--在视图解析器中我们把所有的视图都存放在/WEB-INF/目录下，
        这样可以保证视图安全，因为这个目录下的文件，客户端不能直接访问。-->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
    <!-- 4.自动扫描包，让指定包下的注解生效,由IOC容器统一管理控制器类 -->
    <!--Spring可以使用扫描机制来找到应用程序中所有基于注解的控制器类，为了保证Spring能找到你的控制器，需要在配置文件中声明组件扫描。-->
    <context:component-scan base-package="cn.bithachi.controller"/>
</beans>

7.6 spring-service.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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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
       https://www.springframework.org/schema/aop/spring-aop.xsd">
    <!-- 扫描service相关的bean -->
    <context:component-scan base-package="cn.bithachi.service" />
    <!-- 配置声明式事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BookServiceImpl" class="cn.bithachi.service.BookServiceImpl">
        <property name="bookDao" ref="bookDao"/>
    </bean>
    <!--配置AOP事务支持-->
    <!--配置事务通知-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!--配置哪些方法使用什么样的事务,配置事务的传播特性-->
            <tx:method name="add" propagation="REQUIRED"/>
            <tx:method name="delete" propagation="REQUIRED"/>
            <tx:method name="update" propagation="REQUIRED"/>
            <tx:method name="search*" propagation="REQUIRED"/>
            <tx:method name="get" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
    <!--配置aop织入事务-->
    <aop:config>
        <aop:pointcut id="txPointcut" expression="execution(* cn.bithachi.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
    </aop:config>
</beans>

8. web.xml

<?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">
    <!--DispatcherServlet-->
    <servlet>
        <servlet-name>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--一定要注意: 加载的是总的配置文件！-->
            <param-value>classpath:applicationContext.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>
    <!--encodingFilter 乱码解决-->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <!--Session过期时间-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

9. controller

BookController.java

package cn.bithachi.controller;
import cn.bithachi.pojo.Books;
import cn.bithachi.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.ArrayList;
import java.util.List;
@SuppressWarnings("all")
@Controller
@RequestMapping("/book")
public class BookController {
    /**
     * controller调service层
     *
     * @Autowired是按byType自动注入的，不支持id匹配。 
     spring容器对象context上下文自动在容器中找与BookService相对应name的Bean实例, 实现@Autowired注解的自动装配
     * @Autowired可以作用在变量、setter方法、构造函数、任意方法上。
     * @Autowired 是根据类型自动装配的，加上 @Qualifier 则可以根据 byName 的方式自动装配
     */
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;
    //查询全部书籍，并返回到一个书籍显示页面
    @RequestMapping("/allBook")
    public String list(Model model) {
        List<Books> list = bookService.queryAllBook();
        model.addAttribute("list", list);
        return "allBook";
    }
    //跳转到添加书籍页面
    @RequestMapping("/toAddBook")
    public String toAddPaper() {
        return "addBook";
    }
    //添加书籍完成后，重定向到书籍列表
    @RequestMapping("/addBook")
    public String addPaper(Books books) {
        System.out.println(books);
        bookService.addBook(books);
        //重定向到书籍列表
        return "redirect:/book/allBook";
    }
    //跳转到修改书籍的页面
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model, int id) {
        Books books = bookService.queryBookById(id);
        System.out.println(books);
        model.addAttribute("book", books);
        return "updateBook";
    }
    //修改书籍提交，并重定向到书籍列表
    @RequestMapping("/updateBook")
    public String updateBook(Model model, Books book) {
        System.out.println(book);
        bookService.updateBook(book);
        Books books = bookService.queryBookById(book.getBookID());
        model.addAttribute("books", books);
        return "redirect:/book/allBook";
    }
    //删除书籍提交，并重定向到书籍列表
    //restful风格
    //在 Spring MVC 中可以使用 @PathVariable 注解，让方法参数的值对应绑定到一个 URI 模板变量上。
    @RequestMapping("/del/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }
    //通过名字搜索书籍
    @RequestMapping("/queryBook")
    public String queryBook(Model model, String bookName) {
        Books books = bookService.queryBookByName(bookName);
        List<Books> list = new ArrayList<Books>();
        if (books!=null){
            list.add(books);
        }
        model.addAttribute("list", list);
        return "allBook";
    }
}

10. dao

10.1 BookDao.java

package cn.bithachi.dao;
import cn.bithachi.pojo.Books;
import org.springframework.web.bind.annotation.PathVariable;
import java.util.List;
@SuppressWarnings("all")
public interface BookDao {
    //增加一个Book
    int addBook(Books book);
    //根据id删除一个Book
    int deleteBookById(int id);
    //更新Book
    int updateBook(Books books);
    //根据id查询,返回一个Book
    Books queryBookById(int id);
    //查询全部Book,返回list集合
    List<Books> queryAllBook();
    //根据书名查询书籍
    Books queryBookByName(@PathVariable("bookName") String bookName);
}

10.2 BookMapper.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="cn.bithachi.dao.BookDao">
  <!--增加一个Book-->
  <insert id="addBook" parameterType="Books">
    insert into books(bookName,bookCounts,detail)
    values (#{bookName}, #{bookCounts}, #{detail})
  </insert>
  <!--根据id删除一个Book-->
  <delete id="deleteBookById" parameterType="int">
    delete from books where bookID=#{bookID}
  </delete>
  <!--更新Book-->
  <update id="updateBook" parameterType="Books">
    update books
    set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
    where bookID = #{bookID}
  </update>
  <!--根据id查询,返回一个Book-->
  <select id="queryBookById" resultType="Books">
    select * from books
    where bookID = #{bookID}
  </select>
  <!--查询全部Book-->
  <select id="queryAllBook" resultType="Books">
    SELECT * from books
  </select>
  <!--查询全部Book-->
  <select id="queryBookByName" resultType="Books">
    SELECT * from books where bookName=#{bookName}
  </select>
</mapper>

11. pojo

Books.java

package cn.bithachi.pojo;
@SuppressWarnings("all")
public class Books {
    //属性名与数据库字段名相匹配
    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
    public Books() {
    }
    public Books(int bookID, String bookName, int bookCounts, String detail) {
        this.bookID = bookID;
        this.bookName = bookName;
        this.bookCounts = bookCounts;
        this.detail = detail;
    }
    public int getBookID() {
        return bookID;
    }
    public void setBookID(int bookID) {
        this.bookID = bookID;
    }
    public String getBookName() {
        return bookName;
    }
    public void setBookName(String bookName) {
        this.bookName = bookName;
    }
    public int getBookCounts() {
        return bookCounts;
    }
    public void setBookCounts(int bookCounts) {
        this.bookCounts = bookCounts;
    }
    public String getDetail() {
        return detail;
    }
    public void setDetail(String detail) {
        this.detail = detail;
    }
    @Override
    public String toString() {
        return "Books{" +
                "bookID=" + bookID +
                ", bookName='" + bookName + '\'' +
                ", bookCounts=" + bookCounts +
                ", detail='" + detail + '\'' +
                '}';
    }
}

12. service

12.1 BookService.java

package cn.bithachi.service;
import cn.bithachi.pojo.Books;
import java.util.List;
@SuppressWarnings("all")
//BookService:底下需要去实现,调用dao层
public interface BookService {
    //增加一个Book
    int addBook(Books book);
    //根据id删除一个Book
    int deleteBookById(int id);
    //更新Book
    int updateBook(Books books);
    //根据id查询,返回一个Book
    Books queryBookById(int id);
    //查询全部Book,返回list集合
    List<Books> queryAllBook();
    //根据书名查询书籍
    Books queryBookByName(String bookName);
}

12.2 BookServiceImpl.java

package cn.bithachi.service;
import cn.bithachi.dao.BookDao;
import cn.bithachi.pojo.Books;
import org.springframework.web.bind.annotation.PathVariable;
import java.util.List;
@SuppressWarnings("all")
@Service
public class BookServiceImpl implements BookService {
    private BookDao bookDao;
    //service调用dao层的操作，设置一个set接口，方便Spring管理
    public void setBookDao(BookDao bookDao) {
        this.bookDao = bookDao;
    }
    public int addBook(Books book) {
        return bookDao.addBook(book);
    }
    public int deleteBookById(int id) {
        return bookDao.deleteBookById(id);
    }
    public int updateBook(Books books) {
        return bookDao.updateBook(books);
    }
    public Books queryBookById(int id) {
        return bookDao.queryBookById(id);
    }
    public List<Books> queryAllBook() {
        return bookDao.queryAllBook();
    }
    public Books queryBookByName(String bookName){
        return bookDao.queryBookByName(bookName);
    }
}

13. jsp

13.1 index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
  <head>
    <title>首页</title>
    <style type="text/css">
      a {
        text-decoration: none;
        color: black;
        font-size: 18px;
      }
      h3 {
        width: 180px;
        height: 38px;
        margin: 100px auto;
        text-align: center;
        line-height: 38px;
        background: deepskyblue;
        border-radius: 4px;
      }
    </style>
  </head>
  <body>
    <h3>
      <a href="${pageContext.request.contextPath}/book/allBook">点击进入列表页</a>
    </h3>
  </body>
</html>

13.2 allBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>书籍列表</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>书籍列表 —— 显示所有书籍</small>
                </h1>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 column" style="float: left;">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示所有书籍</a>
        </div>
        <div class="col-md-4 column" style="float: right;">
           <form action="${pageContext.request.contextPath}/book/queryBook" method="post" >
               <input type="text" name="bookName"  placeholder="请输入要查询的书籍名称" >
               <input type="submit" value="查询" class="btn btn-primary">
           </form>
        </div>
    </div>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <table class="table table-hover table-striped">
                <thead>
                <tr>
                    <th>书籍编号</th>
                    <th>书籍名字</th>
                    <th>书籍数量</th>
                    <th>书籍详情</th>
                    <th>操作</th>
                </tr>
                </thead>
                <tbody>
                <c:forEach var="book" items="${requestScope.get('list')}">
                    <tr>
                        <td>${book.getBookID()}</td>
                        <td>${book.getBookName()}</td>
                        <td>${book.getBookCounts()}</td>
                        <td>${book.getDetail()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a> |
                            <a href="${pageContext.request.contextPath}/book/del/${book.getBookID()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>
</body>

13.3 addBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>新增书籍</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>新增书籍</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/addBook" method="post">
        书籍名称：<input type="text" name="bookName" ><br><br><br>
        书籍数量：<input type="text" name="bookCounts"><br><br><br>
        书籍详情：<input type="text" name="detail"><br><br><br>
        <input type="submit" value="添加">
    </form>
</div>

13.4 updateBook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改信息</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>修改信息</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
        <input type="hidden" name="bookID" value="${book.getBookID()}"/>
        书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"/>
        书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
        书籍详情：<input type="text" name="detail" value="${book.getDetail() }"/>
        <input type="submit" value="提交"/>
    </form>
</div>