SpringMVC-整合SSM框架（狂神學習筆記）2021-10-03-有解無憂

SpringMVC-狂神（整合SSM框架）

1、整合SSM

1. 環境要求

環境：

IDEA / Eclipse
MySQL 5.7 +
Tomcat 9
Maven 3.6

要求：
需要熟練掌握MySQL資料庫，Spring，JavaWeb及MyBatis知識，簡單的前端知識

2. 資料庫環境

創建一個存放書籍資料的資料庫表

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
`bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '書id',
`bookName` VARCHAR(100) NOT NULL COMMENT '書名',
`bookCounts` INT(11) NOT NULL COMMENT '數量',
`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,'從入門到放棄'),
(2,'MySQL',10,'從刪庫到跑路'),
(3,'Linux',5,'從進門到進牢');

3. 基本環境搭建

新建一Maven專案！ssmbuild ，添加web的支持
匯入相關的pom依賴 (版本個人自己選擇)

<dependencies>
   <!--Junit-->
   <dependency>
       <groupId>junit</groupId>
       <artifactId>junit</artifactId>
       <version>4.12</version>
   </dependency>
   <!--資料庫驅動-->
   <dependency>
       <groupId>mysql</groupId>
       <artifactId>mysql-connector-java</artifactId>
       <version>5.1.47</version>
   </dependency>
   <!-- 資料庫連接池 -->
   <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>

Maven資源過濾設定

<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>

建立基本結構和配置框架

com.tree.pojo
com.tree.dao
com.tree.service
com.tree.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>

4. Mybatis層撰寫

資料庫組態檔 database.properties

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

關聯資料庫，測驗連接
撰寫MyBatis的核心組態檔

<?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.tree.pojo"/>
    </typeAliases>
    
</configuration>

撰寫資料庫對應的物體類 com.tree.pojo.Books

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;
   
}

撰寫Dao層的 Mapper介面

import com.pojo.Books;
import java.util.List;

public interface BookMapper {
    //增加一本書
    int addBook(Books book);
    //洗掉一本書
    int deleteBookById(@Param("bookId") int id);
    //修改一本書
    int updateBook(Books book);
    //查詢一本書
    Books queryBookById(@Param("bookId") int id);
    //查詢全部圖書
    List<Books> queryAllBook();
}

撰寫介面對應的 Mapper.xml 檔案，需要匯入MyBatis的包

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.tree.dao.BookMapper">

    <insert id="addBook" parameterType="Books">
          insert into ssmbuild.books (bookName, bookCounts, detail)
          values (#{bookName},#{bookCounts},#{detail});
    </insert>

    <delete id="deleteBookById" parameterType="int">
        delete from ssmbuild.books where bookID = #{bookId}
    </delete>

    <update id="updateBook" parameterType="Books">
        update ssmbuild.books
        set bookName=#{bookName},bookCounts=#{bookCounts},detail=#{detail}
        where bookID=#{bookID}
    </update>
    
    <select id="queryBookById" resultType="Books">
        select * from ssmbuild.books  where bookID=#{bookId};
    </select>
    
    <select id="queryAllBook" resultType="Books">
        select * from ssmbuild.books;
    </select>
</mapper>

撰寫Service層的介面和實作類
介面

public interface BookService {
    //增加一個Book
    int addBook(Books book);
    //根據id洗掉一個Book
    int deleteBookById(int id);
    //更新Book
    int updateBook(Books book);
    //查詢一個Book
    Books queryBookById(int id);
    //查詢全部Book，回傳list集合
    List<Books> queryAllBook();
}

實作類

public class BookServiceImpl implements BookService {
    //呼叫Dao層
    private BookMapper bookMapper;

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

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

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

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

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

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

5. Spring層撰寫

配置Spring整合MyBatis，我們這里資料源使用c3p0連接池
我們去撰寫Spring整合Mybatis的相關的組態檔
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">

    <!--1.關系資料庫組態檔-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.連接池
        dbcp: 半自動化操作，不能自動連接
        c3p0: 自動化操作（自動地加載組態檔，并且可以自動設定到物件中）
        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連接池的私有屬性 -->
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="10"/>
        <!-- 關閉連接后不自動commit -->
        <property name="autoCommitOnClose" value="false"/>
        <!-- 獲取連接超時時間 -->
        <property name="checkoutTimeout" value="10000"/>
        <!-- 當獲取連接失敗重試次數 -->
        <property name="acquireRetryAttempts" value="2"/>
    </bean>

    <!--3.sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--系結Mybatis的組態檔-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--4.配置dao介面掃描包，動態的實作了dao介面可以注入到Spring容器中-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--注入sqlSessionFactoryBeanName-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!--要掃描的dao包-->
        <property name="basePackage" value="com.tree.dao"/>
    </bean>

</beans>

Spring整合service層

<?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.掃描service下的包-->
    <context:component-scan base-package="com.tree.service"/>

    <!--2.將我們的所有業務類，注入到Spirng，可以通過配置，或者注解實作-->
    <bean id="BookServiceImpl" class="com.tree.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--3. 宣告式事務配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入資料源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>
    
    <!--4.aop事務支持-->
</beans>

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="classpath:spring-dao.xml"/>
    <import resource="spring-service.xml"/>

</beans>

6. SpringMVC層

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_3_1.xsd"
         version="3.1">

    <!--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:spring-mvc.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>

    <!--亂碼過濾-->
    <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過期時間-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>
</web-app>

創建 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/cache
       http://www.springframework.org/schema/cache/spring-cache.xsd
       http://www.springframework.org/schema/context
       https://www.springframework.org/schema/context/spring-context.xsd">
    
    <!--1.注解驅動-->
    <mvc:annotation-driven/>
    <!--2.靜態資源過濾-->
    <mvc:default-servlet-handler/>
    <!--3.掃描包-->
    <context:component-scan base-package="com.tree.controller"/>
    <!--4.視圖決議器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

Spring配置整合檔案，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="classpath:spring-dao.xml"/>
    <import resource="spring-service.xml"/>
    <import resource="spring-mvc.xml"/>

</beans>

Controller 和視圖層撰寫
1. BookController 類撰寫，方法一：查詢全部書籍

@Controller
@RequestMapping("/book")
public class BookController {
    //controller 呼叫service層
    @Autowired
    @Qualifier("BookServiceImpl")
    private BookService bookService;

    //查詢全部的書籍，并且回傳一個書籍頁面
    @RequestMapping("/allBook")
    public String list(Model model){
        List<Books> list = bookService.queryAllBook();

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

//Controller 用于標記在一個類上，使用它標記的類就是一個SpringMVC Controller 物件，分發處理器將會掃描使用了該注解的類的方法，通俗來說，被Controller標記的類就是一個控制器，這個類中的方法，就是相應的動作，
//@RequestMapping是一個用來處理請求地址映射的注解，可用于類或方法上，用于類上，表示類中的所有回應請求的方法都是以該地址作為父路徑，
//@Autowired顧名思義，就是自動裝配，其作用是為了消除代碼Java代碼里面的getter/setter與bean屬性中的property，
//通過使用 @Qualifier 注解，我們可以消除需要注入哪個 bean 的問題

? 2. 撰寫首頁 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>首頁</title>
  </head>
  <body>
      <h3>
         <a href="${pageContext.request.contextPath}/book/allBook">進入書籍頁面</a>
      </h3>
  </body>
</html>

添加書籍頁 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>書籍串列</title>
    <style>
        #container{
            width: 1080px;
            height:900px;
            margin: 0 auto;
        }
    </style>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div id="container">

        <div class="row_clearfix">
            <div class="col-md-12 column">
                <div class="page-header">
                    <h1>
                        <small>書籍串列------顯示所有書籍</small>
                    </h1>
                </div>
            </div>
        </div>

        <div class="row clearfix">
            <div class="col-md-12 column">
                <table class="table table-hover table-striped">
                    <thead>
                        <tr>
                            <th>書籍編號</th>
                            <th>書籍名稱</th>
                            <th>書籍數量</th>
                            <th>書籍詳情</th>
                        </tr>
                    </thead>

                    <tbody>
                        <c:forEach var="book" items="${list}">
                            <tr>
                                <td>${book.bookID}</td>
                                <td>${book.bookName}</td>
                                <td>${book.bookCounts}</td>
                                <td>${book.detail}</td>
                            </tr>
                        </c:forEach>
                    </tbody>
                </table>
            </div>
        </div>
        
    </div>
    
</body>
</html>

BookController 類撰寫，方法二：添加書籍

//跳轉到增加書籍頁面
@RequestMapping("/toAddBook")
public String toAddPaper(){
    return "addBook";
}

//添加書籍的請求
@RequestMapping("/addBook")
public String addBook(Books books){
    System.out.println("addBook=>"+books);
    bookService.addBook(books);
    return "redirect:/book/allBook";
}

添加書籍頁面：addBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加書籍</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <style>
        #container{
            width: 1080px;
            height:900px;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div id="container">

        <div class="row clearfix">
            <div class="col-md-12 column">
                <div class="page-header">
                    <h1>
                        <small>新增書籍</small>
                    </h1>
                </div>
            </div>
        </div>
        <form action="${pageContext.request.contextPath}/book/addBook" method="post">
            <div class="form-group">
                <label>書籍名稱</label>
                <input type="text" name="bookName" class="form-control" required>
            </div>
            <div class="form-group">
                <label>書籍數量</label>
                <input type="text" name="bookCounts" class="form-control" required>
            </div>
            <div class="form-group">
                <label>書籍描述</label>
                <input type="text" name="detail" class="form-control" required>
            </div>
            <div class="form-group">
                <input type="submit" class="form-control" value="添加">
            </div>
        </form>

    </div>

</body>
</html>

BookController 類撰寫，修改書籍

// 修改頁面
@RequestMapping("/toUpdate")
public String toUpdateBook(Model model,int id){
    Books books = bookService.queryBookById(id);
    model.addAttribute("books",books);
    return "updateBook";
}

@RequestMapping("/updateBook")
public String updateBook(Books book){
    bookService.updateBook(book);
    Books books = bookService.queryBookById(book.getBookID());
    return "redirect:/book/allBook";
}

updateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改書籍</title>
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <style>
        #container{
            width: 1080px;
            height:900px;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="row clearfix">
            <div class="page-header">
                <h1>
                    <small>修改書籍</small>
                </h1>
            </div>
        </div>
        <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
            <input type="hidden" name="bookID" value="${books.getBookID()}">
            <div class="form-group">
                <label>書籍名稱</label>
                <input type="text" name="bookName" class="form-control" value="${books.bookName}">
            </div>
            <div class="form-group">
                <label>書籍數量</label>
                <input type="text" name="bookCounts" class="form-control" value="${books.bookCounts}">
            </div>
            <div class="form-group">
                <label>書籍描述</label>
                <input type="text" name="detail" class="form-control" value="${books.detail}">
            </div>
            <input type="submit" value="更新書籍">
        </form>
    </div>
</body>
</html>

allBook.jsp

<tbody>
    <c:forEach var="book" items="${list}">
        <tr>
            <td>${book.bookID}</td>
            <td>${book.bookName}</td>
            <td>${book.bookCounts}</td>
            <td>${book.detail}</td>
            <td>
                <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
                &nbsp;|&nbsp;
                <a href="#">洗掉</a>
            </td>
        </tr>
    </c:forEach>
</tbody>

BookController 類撰寫，方法四：洗掉書籍

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

allBook.jsp

<tbody>
    <c:forEach var="book" items="${list}">
        <tr>
            <td>${book.bookID}</td>
            <td>${book.bookName}</td>
            <td>${book.bookCounts}</td>
            <td>${book.detail}</td>
            <td>
                <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
                &nbsp;|&nbsp;
                <a href="${pageContext.request.contextPath}/book/deleteBook?id=${book.bookID}">洗掉</a>
            </td>
        </tr>
    </c:forEach>
</tbody>

resful風格

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

<td>
    <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
    &nbsp;|&nbsp;
    <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">洗掉</a>
</td>

新增搜索功能

allBook.jsp

<div class="row">
    <div class="col-md-4 column">
        <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/addBook">新增書籍</a>
        <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">顯示全部</a>
    </div>
    <div class="col-md-4 column">
    <form class="form-inline" action="${pageContext.request.contextPath}/book/queryBook" method="post" style="float: right">
        <input type="text" name="queryBookName" class="form-control" placeholder="請查詢要查詢的書籍名稱">
        <input type="submit" value="查詢" class="btn btn-primary">
    </form>
    </div>
</div>

bookMapper

//新增功能-->搜索查詢
Books queryBookName(@Param("bookName") String bookName);

bookMapper.xml

<select id="queryBookName" resultType="Books">
    select * from ssmbuild.books where bookName = #{bookName}
</select>

BookService

//新增功能-->搜索查詢
Books queryBookName(String bookName);

BookServiceImpl

//新增功能-->搜索查詢
public Books queryBookName(String bookName) {
    return bookMapper.queryBookName(bookName);
}

BookController

//新增功能-->搜索查詢
@RequestMapping("/queryBook")
public String queryBook(String queryBookName,Model model){
    Books books = bookService.queryBookName(queryBookName);
    System.out.println("queryBook-->"+books);
    List<Books> list = new ArrayList<Books>();
    list.add(books);
    model.addAttribute("list",list);
    return "allBook";
}

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