SSM框架最新整合保姆级教程(IDEA版)

一、环境要求

环境：

IDEA
MySQL 5.7.19
Tomcat 9
Maven 3.6

要求：

需要熟练掌握MySQL数据库，Spring，JavaWeb及MyBatis知识，简单的前端知识；

完整代码：完整代码下载

二、数据库环境

创建一个存放书籍数据的数据库表

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

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');

三、基本环境搭建

3.1 新建项目

① 新建Maven项目

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② 编辑项目名称

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3.2 导入相关的pom依赖

<!--    依赖问题：junit、数据库驱动、连接池、servlet、jsp、mybatis、mybatis-spring、spring-->
    <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>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.6</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.14.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
    </dependencies>

3.3 Maven资源过滤设置(pom.xml文件中)

<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>

3.4 建立基本的结构和配置框架

com.wang.pojo
com.wang.dao
com.wang.service
com.wang.controller

mybatis-config.xml（mybatis的核心配置文件）

<?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>

</configuration>

applicationContext.xml（spring的核心配置文件）

<?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">

</beans>

四、Mybatis层编写

4.1 数据库配置文件database.properties

jdbc.driver=com.mysql.jdbc.Driver
#如果使用的是MySQL8.0+，还需要增加一个时区的配置;
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=

4.2 IDEA关联数据库

① 输入用户名、密码，测试连接

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② 选择数据库

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4.3 编写mybatis核心配置文件

① 配置`mybatis`核心配置文件

<?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>

    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    </settings>
<!--    配置数据源，现在交给Spring去做-->

    <typeAliases>
        <package name="com.wang.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.wang.dao.BookMapper"/>
    </mappers>

</configuration>

② 编写实体类`books`

package com.wang.pojo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author Wang
 * @date 2021/6/2 0012 19:43
 * description 实体类books
 */
@Data
@AllArgsConstructor //有参构造
@NoArgsConstructor //无参构造
public class Books {

    private int bookID;
    private String bookName;
    private int bookCounts;
    private String detail;
}

③ 新建一个`dao`接口

package com.wang.dao;import com.wang.pojo.Books;import org.apache.ibatis.annotations.Param;import org.springframework.stereotype.Repository;import java.util.List;/** * @author Wang * @date 2021/6/2 0012 19:52 * description */@Repositorypublic interface BookMapper {//    增加一本书    int addBook(Books books);//    删除一本书    int deleteBookById(@Param("bookID") int id);//    更新一本书    int updateBook(Books books);//    查询一本书    Books queryBookById(@Param("bookID") int id);//    查询全部的书    List<Books> queryAllBook();    Books queryBookByName(@Param("bookName") String bookName);}

④ 书写`mapper.xml`文件

一个mapper就要有一个namespace。

<?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.wang.dao.BookMapper">
    <!--增加一个Book-->
    <insert id="addBook" parameterType="Books">
      insert into ssmbuild.books(bookName,bookCounts,detail)
      values (#{bookName}, #{bookCounts}, #{detail})
    </insert>

    <!--根据id删除一个Book-->
    <delete id="deleteBookById" parameterType="int">
      delete from ssmbuild.books where bookID=#{bookID}
    </delete>

    <!--更新Book-->
    <update id="updateBook" parameterType="Books">
      update ssmbuild.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 ssmbuild.books
      where bookID = #{bookID}
    </select>

    <!--查询全部Book-->
    <select id="queryAllBook" resultType="Books">
      SELECT * from ssmbuild.books
    </select>

<!--    根据书籍名称查询一本书-->
    <select id="queryBookByName" resultType="Books">
        select * from ssmbuild.books
        where bookName = '${bookName}'
    </select>

</mapper>

⑤ 编写`service`层

package com.wang.service;

import com.wang.pojo.Books;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author Wang
 * @date 2021/5/12 0012 20:03
 * description
 */
@Service
public interface BookService {
    //    增加一本书
    int addBook(Books books);
    //    删除一本书
    int deleteBookById(int id);
    //    更新一本书
    int updateBook(Books books);
    //    查询一本书
    Books queryBookById(int id);
    //    查询全部的书
    List<Books> queryAllBook();

    Books queryBookByName(String bookName);
}

package com.wang.service;

import com.wang.dao.BookMapper;
import com.wang.pojo.Books;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author Wang
 * @date 2021/5/12 0012 20:04
 * description
 */
@Service
public class BookServiceImpl implements BookService {

//    service调用dao层
    @Autowired
    private BookMapper bookMapper;

    public int addBook(Books books) {
        return bookMapper.addBook(books);
    }

    public int deleteBookById(int id) {
        return bookMapper.deleteBookById(id);
    }

    public int updateBook(Books books) {
        return bookMapper.updateBook(books);
    }

    public Books queryBookById(int id) {
        return bookMapper.queryBookById(id);
    }

    public List<Books> queryAllBook() {
        return bookMapper.queryAllBook();
    }

    public Books queryBookByName(String bookName) {
        return bookMapper.queryBookByName(bookName);
    }
}

五、整合Spring层

1、新建`Spring-dao.xml`文件

<?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">

<!--    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
    druid很多公司在用它
    hikari
-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <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、sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
<!--        绑定Mybatis的配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

<!--    4、配置dao接口扫描包，动态的实现了Dao接口可以注入到Spring容器中-->
    <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="com.wang.dao"/>
    </bean>
</beans>

2、新建`Spring-service.xml`文件

<?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/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
       http://www.springframework.org/schema/aop
       https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

<!--    1、扫描service下的包-->
    <context:component-scan base-package="com.wang.service"/>

<!--&lt;!&ndash;    2、将我们的所有业务类注入到Spring，可以通过配置，或者注解实现 &ndash;&gt;-->
<!--    <bean id="BookServiceImpl" class="com.wang.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-->
    <aop:config>
        <aop:pointcut id="txPointCut" expression="execution(* com.wang.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>
    </aop:config>

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="add" propagation="REQUIRED"/>
            <tx:method name="delete" propagation="REQUIRED"/>
            <tx:method name="update" propagation="REQUIRED"/>
            <tx:method name="query" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>
</beans>

六、整合SpringMVC

1、增加web依赖

右键项目名–>选择Add Frameworks Support

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2、编写`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">
    <!--    DispatchServlet-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--    乱码过滤-->
    <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>

3、创建`Spring-mvc.xml`文件

<?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: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 https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 配置SpringMVC -->
    <!-- 1.开启SpringMVC注解驱动 -->
    <mvc:annotation-driven />
    <!-- 2.静态资源默认servlet配置-->
    <mvc:default-servlet-handler/>

    <!-- 3.配置jsp 显示ViewResolver视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 4.扫描web相关的bean -->
    <context:component-scan base-package="com.wang.controller" />
</beans>

4、编写`applicationContext.xml`文件

把配置文件整合到一起即可。

<?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="classpath:spring-mvc.xml"/>    <import resource="classpath:spring-service2.xml"/>    <import resource="classpath:spring-dao.xml"/></beans>

七、编写功能

1、查询书籍功能

① 编写`BookController`类

package com.wang.controller;

import com.wang.pojo.Books;
import com.wang.service.BookService;
import org.springframework.beans.factory.annotation.Autowired;
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;

/**
 * @author Wang
 * @date 2021/5/12 0012 21:12
 * description
 */
@Controller
@RequestMapping("/book")
public class BookController {

//    controller调用service层
    @Autowired
    private BookService bookService;

//    查询选全部的书籍，并且返回到一个书籍展示页面
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> list = bookService.queryAllBook();

        model.addAttribute("list",list);
        return "allBook";
    }

//    跳转到增加书籍页面
    @RequestMapping("/toAddBookPage")
    public String toAddPaper(){
        return "addBook";
    }

//    进行添加书籍
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("=======>"+books);
        bookService.addBook(books);
        return "redirect:/book/allBook";//重定向到我们的@RequestMapping("/allBook")
    }

//    跳转到修改书籍页面
    @RequestMapping("/toEditBookPage")
    public String toEditBookPage(int id,Model model){
        Books books = bookService.queryBookById(id);
        model.addAttribute("books",books);
        return "editBook";
    }

    @RequestMapping("/editBook")
    public String editBook(Books books){
        System.out.println("=======>"+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";//重定向到我们的@RequestMapping("/allBook")
    }

    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id){
        bookService.deleteBookById(id);
        return "redirect:/book/allBook";
    }

    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName,Model model){
        Books books = bookService.queryBookByName(queryBookName);
        List<Books> list = new ArrayList<Books>();
        list.add(books);
        if(books==null){
            list = bookService.queryAllBook();
            model.addAttribute("error","未查到");
        }
        model.addAttribute("list",list);
        return "allBook";
    }
}

② 测试查询书籍功能

· 发现错误
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· 修改方法，可以看到WEB-INF下面只有一个classes文件，没有lib文件夹

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· 把原来的这个books:war exploded叉掉，新建一个即可
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· 又发现错误
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· 检查发现少了一个依赖

<dependency>      
	<groupId>org.aspectj</groupId>      
	<artifactId>aspectjweaver</artifactId>      
	<version>1.8.13</version>
</dependency>

③ 测试成功

Preparing: SELECT * from ssmbuild.books
Parameters:
< Columns: bookID, bookName, bookCounts, detail
< Row: 1, Java, 77, 从入门到放弃
< Row: 2, MySQL, 101, 从删库到跑路
< Row: 3, Linux, 5, 从进门到进牢哈哈哈哈
< Row: 5, 数据结构, 99, C语言版
< Row: 6, C#程序设计实用教程, 88, 机械工业出版社
< Row: 7, C程序设计, 36, 清华大学出版社
< Total: 6

$[外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传(img-s3mtmwMH-1689059857747)(C:\Users\Administrator\AppData\Roaming\Typora\typora-user-images\image-20210603133513112.png)]$

2、添加书籍

① 跳转到增加书籍页面

//    跳转到增加书籍页面    
@RequestMapping("/toAddBookPage")    
public String toAddPaper(){        
	return "addBook";    
}

② 编写增加书籍页面

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2021/6/3 0012
  Time: 23:35
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>增加书籍页面</title>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-4 column">
            <div class="page-header">
                <div class="alert alert-info" role="alert">
                    <h1>增加书籍页面</h1>
                </div>
            </div>
            <form action="${pageContext.request.contextPath}/book/addBook" method="post">
                <div class="form-group">
                    <label>书籍名称</label>
                    <input type="text" class="form-control" name="bookName" required>
                </div>
                <div class="form-group">
                    <label>书籍数量</label>
                    <input type="text" class="form-control" name="bookCounts" required>
                </div>
                <div class="form-group">
                    <label>书籍描述</label>
                    <input type="text" class="form-control" name="detail" required>
                </div>
                <div class="form-group">
                    <input type="submit" class="btn btn-primary" value="添加">
                </div>
            </form>
        </div>
    </div>
</div>
</body>
</html>

③ 进行书籍的添加

//    进行添加书籍
    @RequestMapping("/addBook")
    public String addBook(Books books){
        System.out.println("=======>"+books);
        bookService.addBook(books);
        return "redirect:/book/allBook";//重定向到我们的@RequestMapping("/allBook")
    }

3、修改书籍信息

① 跳转到修改书籍页面

//    跳转到修改书籍页面
    @RequestMapping("/toEditBookPage")
    public String toEditBookPage(int id,Model model){
        Books books = bookService.queryBookById(id);
        model.addAttribute("books",books);
        return "editBook";
    }

② 修改书籍页面

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2021/6/3 0012
  Time: 23:35
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改书籍页面</title>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-4 column">
            <div class="page-header">
                <div class="alert alert-danger" role="alert">
                    <h1>修改书籍页面</h1>
                </div>
            </div>
            <form action="${pageContext.request.contextPath}/book/editBook" method="post">
                <input type="hidden" name="bookID" value="${books.bookID}">
                <div class="form-group">
                    <label>书籍名称</label>
                    <input type="text" class="form-control" name="bookName" value="${books.bookName}" required>
                </div>
                <div class="form-group">
                    <label>书籍数量</label>
                    <input type="text" class="form-control" name="bookCounts" value="${books.bookCounts}" required>
                </div>
                <div class="form-group">
                    <label>书籍描述</label>
                    <input type="text" class="form-control" name="detail" value="${books.detail}" required>
                </div>
                <div class="form-group">
                    <input type="submit" class="btn btn-danger" value="修改">
                </div>
            </form>
        </div>
    </div>
</div>
</body>
</html>

③ 进行书籍信息修改

@RequestMapping("/editBook")
    public String editBook(Books books){
        System.out.println("=======>"+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";//重定向到我们的@RequestMapping("/allBook")
    }

          <input type="text" class="form-control" name="bookCounts" value="${books.bookCounts}" required>
                </div>
                <div class="form-group">
                    <label>书籍描述</label>
                    <input type="text" class="form-control" name="detail" value="${books.detail}" required>
                </div>
                <div class="form-group">
                    <input type="submit" class="btn btn-danger" value="修改">
                </div>
            </form>
        </div>
    </div>
</div>
</body>
</html>

③ 进行书籍信息修改

@RequestMapping("/editBook")
    public String editBook(Books books){
        System.out.println("=======>"+books);
        bookService.updateBook(books);
        return "redirect:/book/allBook";//重定向到我们的@RequestMapping("/allBook")
    }