整合SSM框架 -- 简单基础SSM项目

整合SSM框架 – 第一个SSM项目

学完MyBatis、Spring、SpringMVC，做一个基于SSM框架的基础项目–书籍管理系统，要求可以实现数据的增删改查，业务运行逻辑明了，分层开发，用来巩固学习

目标：

配置SSM框架
实现基础的增删改查功能
具备后续方便的拓展功能
界面设计整洁

最终效果：

全部书籍页面
新增书籍页面
查询书籍页面

环境：

开发环境

环境：

IDEA 2021.2.1
MySQL 8
Tomcat 9
Maven 3.8

数据库环境

创建一个存放书籍数据的数据库表

数据库ssmbuild 书籍信息表books 主键bookID自动增长所有字段都不能为空

CREATEDATABASE `ssmbuild`;USE`ssmbuild`;-- 创建图书表
CREATE TABLE `books`
(`bookID`     INT(10)      NOT NULL AUTO_INCREMENT COMMENT '图书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 = INNODBDEFAULT CHARSET = utf8;-- 插入数据
INSERT INTO `books`(`bookID`, `bookName`, `bookCounts`, `detail`)
VALUES (1, 'JAVA', 34, '从入门到放弃'),(2, 'MySQL', 23, '从删库到跑路'),(3, 'Linux', 33, '从进门到进牢')

基本环境搭建

项目结构

项目搭建

新建一个Maven项目 ssmbuild ，添加JavaWeb框架的支持

在pom文件中导入所需依赖

<dependencies><!--junit--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.13.2</version></dependency><!--数据库驱动--><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>8.0.26</version></dependency><!--数据库连接池: c3p0--><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.5.5</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>3.5.7</version></dependency><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>5.3.11</version></dependency><!--spring操作数据库，还需要spring-jdbc--><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.3.11</version></dependency><!--AOP切入包--><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.9.7</version></dependency><!--lombok--><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>1.18.22</version></dependency><!--log4j--><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency>
</dependencies>

配置项目依赖

Maven资源过滤设置

<!--在build中配置resources 来防止资源导出失败的问题-->
<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>

建立基本结构和配置框架

编写java代码

编写数据库对应的实体类 pojo.Books.java (注：这里使用了Lombok插件)

@Data
@AllArgsConstructor
@NoArgsConstructor
public class Books {private int bookID;private String bookName;private int bookCounts;private String detail;}

编写Mapper接口 mapper/BookMapper.java

public interface BookMapper {// 增加int insertBook(Books books);// 删除int deleteBook(@Param("bookId") int id);// 修改int updateBook(Books books);// ID查询Books queryBookById(int id);// 查询全部List<Books> queryAllBook();// 模糊查询List<Books> queryBookName(@Param("bookName") String bookName);}

编写Mapper接口对应的XML文件

<?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="com.codeonce.mapper.BookMapper"><!--增加--><insert id="insertBook" parameterType="Books">INSERT INTO ssmbuild.books(bookName, bookCounts, detail)VALUES (#{bookName}, #{bookCounts}, #{detail});</insert><!--删除--><delete id="deleteBook" parameterType="int">DELETEFROM ssmbuild.booksWHERE bookID = #{bookId};</delete><!--修改--><update id="updateBook" parameterType="Books">UPDATE ssmbuild.booksSET bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}WHERE bookID = #{bookID};</update><!--根据ID查询--><select id="queryBookById" resultType="Books">SELECT *FROM ssmbuild.booksWHERE bookID = #{bookId};</select><!--查询全部--><select id="queryAllBook" resultType="Books">SELECT *FROM ssmbuild.books;</select><!--模糊查询--><select id="queryBookName" resultType="Books">SELECT *FROM ssmbuild.booksWHERE bookName LIKE CONCAT('%', #{bookName}, '%');</select>
</mapper>

编写Service层接口 service/BookService.java

public interface BookService {// 增加int insertBook(Books books);// 删除int deleteBook(@Param("bookId") int id);// 修改int updateBook(Books books);// ID查询Books queryBookById(int id);// 查询全部List<Books> queryAllBook();// 查询全部List<Books> queryBookName(String bookName);
}

编写Service层接口实现类 service/BookServiceImpl.java

public class BookServiceImpl implements BookService {// 配置LOG4Jprivate static final Logger logger = Logger.getLogger(BookServiceImpl.class);// service调用mapper层private BookMapper bookMapper;public void setBookMapper(BookMapper bookMapper) {this.bookMapper = bookMapper;}@Overridepublic int insertBook(Books books) {return bookMapper.insertBook(books);}@Overridepublic int deleteBook(int id) {return bookMapper.deleteBook(id);}@Overridepublic int updateBook(Books books) {return bookMapper.updateBook(books);}@Overridepublic Books queryBookById(int id) {return bookMapper.queryBookById(id);}@Overridepublic List<Books> queryAllBook() {return bookMapper.queryAllBook();}@Overridepublic List<Books> queryBookName(String bookName) {return bookMapper.queryBookName(bookName);}
}

编写控制层 controller/BookController.java

import com.codeonce.pojo.Books;
import com.codeonce.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.List;@Controller
@RequestMapping("/book")
public class BookController {// controller 调用 service层@Autowired@Qualifier("BookServiceImpl")private BookService bookService;// 查询全部的书籍,并且返回到一书籍展示的页面@RequestMapping("/allBook")public String queryAll(Model model) {List<Books> booksList = bookService.queryAllBook();model.addAttribute("booksList", booksList);return "allBook";}// 跳转到增加书籍页面@RequestMapping("/toAddBook")public String toAddBookPaper() {return "addBook";}// 添加书籍的请求@RequestMapping("/addBook")public String insertBook(Books books) {System.out.println("addBook=>" + books);int result = bookService.insertBook(books);if (result > 0) {System.out.println("添加数据成功" + books);}return "redirect:/book/allBook";}// 跳转到修改书籍页面@RequestMapping("/toUpdateBook/{bookID}")public String toUpdateBookPaper(@PathVariable("bookID") int id, Model model) {Books books = bookService.queryBookById(id);model.addAttribute("books", books);return "updateBook";}// 修改书籍请求@RequestMapping("/updateBook")public String updateBook(Books books) {System.out.println("updateBook=>" + books);int result = bookService.updateBook(books);if (result > 0) {System.out.println("修改数据成功" + books);}return "redirect:/book/allBook";}// 删除书籍请求@RequestMapping("/deleteBook/{bookID}")public String deleteBook(@PathVariable("bookID") int id) {int result = bookService.deleteBook(id);if (result > 0) {System.out.println("删除数据成功" + id);}return "redirect:/book/allBook";}// 查询书籍@RequestMapping("/queryBook")public String queryBook(String bookName, Model model) {// bookName = "%" + bookName + "%";List<Books> booksList = bookService.queryBookName(bookName);System.err.println("queryBook" + booksList);model.addAttribute("booksList", booksList);return "allBook";}}

配置文件

数据库参数配置文件 resources/database.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=admin

LOG4J日志配置文件 resources/log4j.properties

# 将等级为DEBUG的日志信息输出到console和file这两个目的地，console和file的定义在下面的代码
log4j.rootLogger=DEBUG,console,file
# 控制台输出的相关设置
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.Target=System.out
log4j.appender.console.Threshold=DEBUG
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
log4j.appender.Console.encoding=UTF-8
# 文件输出的相关设置
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=./log/com.mydemo.log
log4j.appender.file.MaxFileSize=10mb
log4j.appender.file.Threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yyyy-MM-dd}][%c]%m%n
log4j.appender.file.encoding=UTF-8
# 日志输出级别
log4j.logger.org.mybatis=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

写dao层操作配置文件 resources/spring-dao.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://www.springframework.org/schema/beans"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttps://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.0.xsd"><!--1.关联数据库配置文件--><context:property-placeholder location="classpath:database.properties"/><!--2.连接池dbcp:  半自动化操作,不能自动连接c3p0:  自动化操作,自动化的加载配置文件,并且可以自动设置到对象中--><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><!--<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="${jdbc.driver}"/><property name="url" value="${jdbc.url}"/><property name="username" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean>--><!--3.SqlSessionFactory--><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/><!--绑定MyBatis配置文件--><property name="configLocation" value="classpath:mybatis-config.xml"/></bean><!--配置Mapper接口扫描包,动态的实现了Mapper接口可以注入的Spring容器中--><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><!--注入sqlSessionFactory--><property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/><!--要扫描的Mapper包--><property name="basePackage" value="com.codeonce.mapper"/></bean></beans>

写service层操作配置文件 resources/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:aop="http://www.springframework.org/schema/aop"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttps://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsd"><!--1.扫描service下的包--><context:component-scan base-package="com.codeonce.service"/><!--2.将我们所有的业务类注入到Spring,可以通过配置或注解实现--><bean id="BookServiceImpl" class="com.codeonce.service.BookServiceImpl"><property name="bookMapper" ref="bookMapper"/></bean><!--3.声明式事务配置--><bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><!--注入数据源--><property name="dataSource" ref="dataSource"/></bean><!--4.AOP事务支持--><!--结合AOP实现事务的织入--><!--配置事务通知--><tx:advice id="txAdvice" transaction-manager="transactionManager"><!--给那些方法配置事务--><!--配置事务的传播特性：new propagation--><tx:attributes><tx:method name="*" propagation="REQUIRED"/></tx:attributes></tx:advice><!--配置事务切入--><aop:config><!--定义切入点--><aop:pointcut id="txPointCut" expression="execution(* com.codeonce.mapper.*.*(..))"/><!--配置切入位置--><aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/></aop:config></beans>

写MVC操作配置文件 resources/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/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/mvchttps://www.springframework.org/schema/mvc/spring-mvc.xsd"><!--1.解锁驱动--><mvc:annotation-driven/><!--2.静态资源过滤--><mvc:default-servlet-handler/><!--3.扫描包: controller--><context:component-scan base-package="com.codeonce.controller"/><!--4.视图解析器--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver"><!--前缀--><property name="prefix" value="/WEB-INF/jsp/"/><!--后缀--><property name="suffix" value=".jsp"/></bean></beans>

mybatis框架配置 resources/mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.ory//DTD Config 3.0//EN" "htpp://mybatis.org/dtd/mybatis-3-config.dtd">
<!--mybatis的主配置文件-->
<configuration><!--设置--><settings><!--LOG4j日志工厂实现--><setting name="logImpl" value="STDOUT_LOGGING"/><!--<setting name="logImpl" value="LOG4J"/>--></settings><!--别名--><typeAliases><typeAlias type="com.codeonce.pojo.Books" alias="Books"/></typeAliases><mappers><mapper class="com.codeonce.mapper.BookMapper"/></mappers></configuration>

导入所有配置文件 resources/applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context"xmlns="http://www.springframework.org/schema/beans"xsi:schemaLocation="http://www.springframework.org/schema/beanshttps://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttps://www.springframework.org/schema/context/spring-context.xsd"><!--开启注解的支持--><context:annotation-config/><import resource="classpath:spring-dao.xml"/><import resource="classpath:spring-service.xml"/><import resource="classpath:spring-mvc.xml"/></beans>

在web.xml 中绑定配置 web/WEB-INF/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"><!--配置DispatchServlet：这个是SpringMVC的核心：请求分发器、前端控制器--><servlet><servlet-name>DispatcherServlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!--DispatchServlet要绑定SpringMVC的配置文件--><init-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></init-param><!--启动级别 数字越小启动越快--><load-on-startup>1</load-on-startup></servlet><!--在SpringMVC中/和/*的区别/:  只匹配所有的请求，不会去匹配JSP页面/*: 只匹配所有的请求，包括JSP页面--><servlet-mapping><servlet-name>DispatcherServlet</servlet-name><url-pattern>/</url-pattern></servlet-mapping><!--配置SpringMVC的乱码过滤器--><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--><session-config><session-timeout>15</session-timeout></session-config></web-app>

JSP页面

index.jsp 跳转页面 web/index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %><html>
<head><title>跳转页面</title><style>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>

书籍列表JSP web/WEB-INF/jsp/allBook.jsp （集成查询所有和模糊查询）

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>书籍列表</title><!-- 引入 Bootstrap --><link rel="stylesheet" href="${pageContext.request.contextPath}/bootstrap/css/bootstrap.min.css"></head><body><div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>书籍列表 —— 显示所有书籍</small></h1></div></div></div><div class="row"><%--新增--%><div class="col-md-4 column"><a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">&nbsp;全部书籍&nbsp;</a><a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">&nbsp;新增书籍&nbsp;</a></div><div class="col-md-4"></div><%--查询--%><div class="col-md-4 column" style="text-align: right"><form action="${pageContext.request.contextPath}/book/queryBook" method="post" class="form-inline"><div class="form-group">
<%--                    <span style="color: red">未查询到任何结果</span>--%><label><input type="text" class="form-control" name="bookName" placeholder="请输入要查询的书籍名称"></label></div><button type="submit" class="btn btn-primary" style="vertical-align: top">&nbsp;查询&nbsp;</button></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="${booksList}"><tr><td>${book.bookID}</td><td>${book.bookName}</td><td>${book.bookCounts}</td><td>${book.detail}</td><td><a href="${pageContext.request.contextPath}/book/toUpdateBook/${book.bookID}">更改</a>|<a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">删除</a></td></tr></c:forEach></tbody></table></div></div></div>

新增书籍页面 web/WEB-INF/jsp/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 rel="stylesheet" href="${pageContext.request.contextPath}/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>新增书籍</small></h1></div></div></div><form action="${pageContext.request.contextPath}/book/addBook" method="post"><div class="form-group"><label for="bookName">书籍名称:</label><input type="text" class="form-control" id="bookName" name="bookName" required></div><div class="form-group"><label for="bookCounts">书籍数量:</label><input type="text" class="form-control" id="bookCounts" name="bookCounts" required></div><div class="form-group"><label for="detail">书籍描述:</label><input type="text" class="form-control" id="detail" name="detail" required></div><div class="form-group"><input type="submit" class="form-control btn-primary" value="添加"></div></form></div>
</body>
</html>

更新书籍JSP页面 web/WEB-INF/jsp/updateBook.jsp （此处可以使用新增书籍页面复用）

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html>
<head><title>修改书籍</title><meta name="viewport" content="width=device-width, initial-scale=1.0"><!-- 引入 Bootstrap --><link rel="stylesheet" href="${pageContext.request.contextPath}/bootstrap/css/bootstrap.min.css">
</head>
<body>
<div class="container"><div class="row clearfix"><div class="col-md-12 column"><div class="page-header"><h1><small>修改书籍</small></h1></div></div></div><form action="${pageContext.request.contextPath}/book/updateBook" method="post"><div class="form-group"><label for="bookName">书籍名称:</label><input type="text" class="form-control" id="bookName" name="bookName" required value="${books.bookName}"></div><div class="form-group"><label for="bookCounts">书籍数量:</label><input type="text" class="form-control" id="bookCounts" name="bookCounts" required value="${books.bookCounts}"></div><div class="form-group"><label for="detail">书籍描述:</label><input type="text" class="form-control" id="detail" name="detail" required value="${books.detail}"></div><div class="form-group"><input type="hidden" value="${books.bookID}" name="bookID"><input type="submit" class="form-control btn-primary" value="修改"></div></form></div>
</body>
</html>

总结

代码还有很多地方可以改进比如页面代码复用方法复用动态SQL
后续进行项目拓展都可以基于需求进行增加mapper接口