SSM整合（参考狂神视频）

最新推荐文章于 2021-10-17 19:23:58 发布

longLAY

最新推荐文章于 2021-10-17 19:23:58 发布

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本文链接：https://blog.youkuaiyun.com/qq_41868937/article/details/115469764

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本文详细指导如何使用SSM框架，包括数据库设计、Maven项目搭建、MyBatis配置、Spring集成、DAO与Service接口实现，以及Spring MVC和Controller的编写，最终完成一个包含增删改查功能的书籍管理应用。

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整合SSM

环境要求

环境：

IDEA

MySQL 8.0.22

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

1. 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');

基本环境搭建

1、新建一Maven项目！ssmbuild ，添加web的支持！

2、导入相关的pom依赖！

<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>2.0.2</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>5.1.9.RELEASE</version>
   </dependency>
</dependencies>

3、Maven资源过滤设置！

<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>

4、建立基本结构和配置框架！

com.longay.pojo
com.longay.dao
com.longay.service
com.longay.controller

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>

</configuration>

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">

</beans>

2. Mybatis层编写

1、数据库配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mybatis?serverTimezone=UTC&useSSL=false&useUnicode=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456

2、IDEA关联数据库

3、编写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>
   
   <typeAliases>
       <package name="com.longay.pojo"/>
   </typeAliases>

</configuration>

4、编写数据库对应的实体类 com.longay.pojo.Books

使用lombok插件

package com.kuang.pojo;

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

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

5、编写Dao层的Mapper接口！

package com.longay.dao;

import com.longay.pojo.Books;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface BookMapper {

    //增加一个Book
    int addBook(Books book);

    //根据id删除一个Book
    int deleteBookById(@Param("bookID") int id);

    //更新Book
    int updateBook(Books book);

    //根据id查询, 返回一个Book
    Books queryBookById(@Param("bookID") int id);

    //查询全部Book, 返回list集合
    List<Books> queryAllBook();

}

6、编写接口对应的 Mapper.xml 文件，BookMapper.xml。需要导入MyBatis的包！

<?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.longay.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" parameterType="int" 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>

</mapper>

写完后立马注册mapper

<?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>

    <typeAliases>
        <package name="com.longay.pojo"/>
    </typeAliases>
    
    <mappers>
        <mapper resource="com/longay/dao/BookMapper.xml"/>
    </mappers>

</configuration>

7、编写Service层的接口和实现类

接口：

package com.longay.service;

import com.longay.pojo.Books;

import java.util.List;

// 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 book);

    //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();
}

实现类：

package com.longay.service;

import com.longay.dao.BookMapper;
import com.longay.pojo.Books;

import java.util.List;

public class BookServiceImpl implements BookService {

    // 调用dao层的操作，设置一个set接口，方便Spring管理
    private BookMapper bookMapper;

    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

    @Override
    public int addBook(Books book) {
        return bookMapper.addBook(book);
    }

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

    @Override
    public int updateBook(Books book) {
        return bookMapper.updateBook(book);
    }

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

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

到此，底层需求操作编写完毕！

3. Spring层

1、配置Spring整合MyBatis，我们这里数据源使用c3p0连接池！

2、我们去编写Spring整合Mybatis的相关的配置文件，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）
       druid  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.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MyBatis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="com.longay.dao"/>
    </bean>

</beans>

3、Spring整合Service层

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

    <!-- 1.扫描service相关的bean -->
    <context:component-scan base-package="com.longay.service"/>

    <!-- 2.BookServiceImpl注入到IOC容器中 -->
    <bean id="BookServiceImpl" class="com.longay.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!-- 3.配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
    </bean>

</beans>

Spring层搞定！

4. SpringMVC层

1、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>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>

    <!-- encodingFilter -->
    <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>

2、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: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
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://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.longay.controller"/>

</beans>

3、Spring配置整合文件，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>

配置文件结束！

5. Controller和视图层编写

1、BookController 类编写，方法一：查询全部书籍

@Controller
@RequestMapping("/book")
public class BookController {

    // controller层调service层
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    // 查询全部书籍，并返回到一个书籍展示页面
    @RequestMapping("/allBooks")
    public String list(Model model) {
        List<Books> books = bookService.queryAllBook();
        model.addAttribute("books", books);
        return "allBooks";
    }
}

2、编写首页 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/allBooks">点击进入书籍列表页</a>
</h3>
</body>
</html>

3、书籍列表页面 allBooks.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">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增</a>
        </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>书籍名称</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="${requestScope.get('books')}">
                    <tr>
                        <td>${book.getBookID()}</td>
                        <td>${book.getBookName()}</td>
                        <td>${book.getBookCounts()}</td>
                        <td>${book.getDetail()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/book/toUpdateBook?id=${book.getBookID()}">更改</a>
                            &nbsp; | &nbsp;
                            <a href="${pageContext.request.contextPath}/book/delete/${book.getBookID()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

4、BookController 类编写，方法二：添加书籍

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

    // 增加书籍
    @RequestMapping("/addBook")
    public String addBook(Books books) {
        bookService.addBook(books);
        return "redirect:/book/allBooks";
    }

5、添加书籍页面：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" required><br><br><br>
        书籍数量：<input type="text" name="bookCounts" required><br><br><br>
        书籍详情：<input type="text" name="detail" required><br><br><br>
        <input type="submit" value="添加">
    </form>

</div>

6、BookController 类编写，方法三：修改书籍

    // 跳转到更改书籍页面
    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model, int id) {
        Books book = bookService.queryBookById(id);
        model.addAttribute("QBook", book);
        return "updateBook";
    }

    // 更改书籍
    @RequestMapping("/updateBook")
    public String updateBook(Model model, Books book) {
        bookService.updateBook(book);
        Books books = bookService.queryBookById(book.getBookID());
        model.addAttribute("books", books);
        return "redirect:/book/allBooks";
    }

7、修改书籍页面 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="${pageContext.request.contextPath}/book/updateBook" method="post">
        <input type="hidden" name="bookID" value="${QBook.bookID}"/>
        书籍名称：<input type="text" name="bookName" value="${QBook.bookName}" required/>
        书籍数量：<input type="text" name="bookCounts" value="${QBook.bookCounts}" required/>
        书籍详情：<input type="text" name="detail" value="${QBook.detail}" required/>
        <input type="submit" value="提交"/>
    </form>

</div>

8、BookController 类编写，方法四：删除书籍

    // 删除书籍
    @RequestMapping("/delete/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        bookService.deleteBookById(id);
        return "redirect:/book/allBooks";
    }

整合已经完毕，可以直接运行测试！

6、新增搜索功能

1、前端，allBooks.jsp

        <div class="col-md-8 column">
            <%-- 查询书籍 --%>
            <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right">
                <input type="text" name="queryBookName" class="form-control" placeholder="请输入要查询的书籍名称">
                <input type="submit" value="查询" class="btn btn-primary">
            </form>
        </div>

2、dao层，BookMapper接口

    //根据bookName查询, 返回一个Book
    Books queryBookByBookName(@Param("bookName") String bookName);

3、Dao层，BookMapper.xml

    <!-- 根据bookName查询, 返回一个Book -->
    <select id="queryBookByBookName" parameterType="String" resultType="books">
        select *
        from ssmbuild.books
        where bookName = #{bookName}
    </select>

4、Service层，BookService接口

    //根据bookName查询, 返回一个Book
    Books queryBookByBookName(String bookName);

5、Service层，BookServiceImpl类

    @Override
    public Books queryBookByBookName(String bookName) {
        return bookMapper.queryBookByBookName(bookName);
    }

6、Controller层，BookController类

    // 查询书籍
    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName, Model model) {
        Books book = bookService.queryBookByBookName(queryBookName);
        List<Books> books = new ArrayList<>();
        books.add(book);
        model.addAttribute("books", books);
        return "allBooks";
    }