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SSM整合案例：圖書管理系統

本文轉載自   查看原文   2020-01-15 17:12   2479    Spring MVC

目錄

SSM整合案例：圖書管理系統

Spring + SpringMVC + MyBatis+JSP+Servlet+簡單前端知識

環境要求：

  • IDEA
  • MySQL 5.7.19
  • Tomcat 9
  • Maven 3.6

1、搭建數據庫環境

創建一個存放書籍數據的數據庫表：

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books`(
	`bookID` INT(10) PRIMARY KEY 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'
);

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');

SELECT * FROM books;

數據庫連接 url：

jdbc:mysql:/主機:3306/數據庫名稱?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC

注：如果使用的是MySQL8.0+，url連接時增加一個時區的配置：serverTimezone=Asia/Shanghai

2、基本環境搭建

2.1、新建一個Maven項目，起名為：ssmbuild，添加web的支持

2.2、導入pom的相關依賴

<!--導入依賴 junit 數據庫連接 數據庫連接池 c3p0 Spring MyBatis mybatis-spring servlet jsp jstl-->

<dependencies>
    <!--junit-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
    </dependency>

    <!--數據庫驅動-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.47</version>
    </dependency>

    <!-- 數據庫連接池 -->
    <!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>c3p0</artifactId>
        <version>0.9.5.5</version>
    </dependency>

    <!--Spring-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.2.2.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.0.3.RELEASE</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>2.0.3</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>

    <!--lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.10</version>
    </dependency>
</dependencies>

2.3、Maven靜態資源過濾設置

<!--靜態資源過濾問題-->
<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>

2.4、建立基本結構和配置框架！

java包：

  • com.rainszj.pojo
  • com.rainszj.dao
  • com.rainszj.service
  • com.rainszj.controller

resources包：

  • 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>

  • database.properties

3、MyBatis層編寫

3.1、pojo包

  • Books
package com.rainszj.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;

}

3.2、dao包

  • BookMapper
package com.rainszj.dao;

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

import java.util.List;

public interface BookMapper {

    /**
     * 增加一本書
     *
     * @param books
     * @return
     */
    int addBook(Books books);

    /**
     * 刪除一本書
     *
     * @param id
     * @return
     */
    int deleteBook(@Param("bookId") int id);

    /**
     * 修改一本書
     *
     * @param book
     * @return
     */
    int updateBook(Books book);

    /**
     * 根據 id 查詢一本書
     *
     * @param id
     * @return
     */
    Books queryBookById(@Param("bookId") int id);

    /**
     * 查詢所有的書
     *
     * @return
     */
    List<Books> queryAllBook();

}
  • 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="com.rainszj.dao.BookMapper">

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

    <delete id="deleteBook" 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>

3.3、resources

  • 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>

    <!--配置數據源，交給Spring-->

    <!--其別名-->
    <typeAliases>
        <package name="com.rainszj.pojo"/>
    </typeAliases>

    <!--注冊Mapper-->
    <mappers>
        <mapper class="com.rainszj.dao"/>
    </mappers>

</configuration>
  • database.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
jdbc.username=root
jdbc.password=root

3.4、service包

  • BookService
package com.rainszj.service;

import com.rainszj.pojo.Books;

import java.util.List;

public interface BookService {

    /**
     * 增加一本書
     *
     * @param books
     * @return
     */
    int addBook(Books books);

    /**
     * 刪除一本書
     *
     * @param id
     * @return
     */
    int deleteBook(int id);

    /**
     * 修改一本書
     *
     * @param book
     * @return
     */
    int updateBook(Books book);

    /**
     * 根據 id 查詢一本書
     *
     * @param id
     * @return
     */
    Books queryBookById(int id);

    /**
     * 查詢所有的書
     *
     * @return
     */
    List<Books> queryAllBook();

}
  • BookServiceImpl
package com.rainszj.service;

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

import java.util.List;

public class BookServiceImpl implements BookService {

    // service層調dao層，使用組合dao
    private BookMapper bookMapper;

    // 使用Spring管理，實現set注入
    public void setBookMapper(BookMapper bookMapper) {
        this.bookMapper = bookMapper;
    }

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

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

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

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

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

4、Spring層編寫

4.1、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.關聯數據庫配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.連接池
        dbcp:半自動化操作（不能自動加載文件）
        c3p0：自動化操作（自動加載配置文件，並且自動設置到對象中）
        druid，hikari
    -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!--配置連接池的屬性-->
        <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">
        <!--注入數據庫連接池-->
        <property name="dataSource" ref="dataSource"/>
        <!--配置mybatis配置文件：mybatis-config.xml-->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>

    </bean>

    <!-- 4.配置掃描Dao接口包，動態實現Dao接口注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <!-- 給出需要掃描Dao接口包 -->
        <property name="basePackage" value="com.rainszj.dao"/>
    </bean>

</beans>

4.2、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"
       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相關的bean -->
    <context:component-scan base-package="com.rainszj.service"/>

    <!--2.將我們所有的業務類，注入到Spring中，可以通過配置或者注解實現-->
    <bean id="BookServiceImpl" class="com.rainszj.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--3.聲明式事務配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注入數據源-->
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!--4.aop事務支持-->


</beans>

5、Spring MVC層編寫

5.1、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">

    <!--注冊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>

    <!--Spring MVC內置的過濾器-->
    <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過期時間-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>

</web-app>

5.2、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: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
       https://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--1.注解驅動-->
    <mvc:annotation-driven/>
    <!--2.靜態資源過濾-->
    <mvc:default-servlet-handler/>
    <!--3.自動掃描包：controller-->
    <context:component-scan base-package="com.rainszj.controller"/>

    <!--4.視圖解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

底層代碼編寫完畢，下面只需要編寫 Controller 層和 視圖層。

6、查詢書籍功能

6.1、BookController 類編寫 ， 方法一：查詢全部書籍

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

    /**
     * 查詢所有書籍
     * @param model
     * @return
     */
    @RequestMapping("/allBook")
    public String list(Model model) {
        List<Books> list = bookService.queryAllBook();
        model.addAttribute("list", list);

        return "allBook";
    }
}

6.2、編寫首頁 index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>首頁</title>

    <style>

        a {
            text-decoration: none;
            color: #000;
            font-size: 18px;
        }

        h3 {
            width: 180px;
            height: 38px;
            margin: 200px auto;
            text-align: center;
            line-height: 38px;
            background-color: deepskyblue;
            border-radius: 5px;
        }
    </style>

</head>
<body>

<h3>
    <a href="${pageContext.request.contextPath}/book/allBook">點擊到書籍列表</a>
</h3>

</body>
</html>

6.3、添加書籍列表頁面 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>書籍列表</title>

    <%--BootStrap 美化界面--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

    <style>

    </style>
</head>
<body>

<div class="container">

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>書籍列表 —————— 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">
                <thread>
                    <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>
                </thread>

                <tbody>
                    <c:forEach var="book" items="${requestScope.get('list')}">
                        <tr>
                            <td>${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>

7、添加書籍

7.1、BookController 類編寫 ， 方法二：添加書籍

/**
 * 跳轉到修改頁面，並根據 id回顯數據
 *
 * @param id    Book id
 * @param model 傳給前端的數據
 * @return
 */
@RequestMapping("/toUpdate/{bookId}")
public String toUpdatePaper(@PathVariable("bookId") int id, Model model) {
    Books book = bookService.queryBookById(id);
    model.addAttribute("QBook", book);

    System.out.println(book);
    return "updateBook";
}

/**
 * 處理修改請求
 *
 * @param book 前端傳遞的對象
 * @return
 */
@RequestMapping("/updateBook")
public String updateBook(Books book) {

    int res = bookService.updateBook(book);

    System.out.println(res);
    if (res > 0) {
        System.out.println("updateBook=>執行成功" + book);
    }

    return "redirect:/book/allBook";
}

7.2、在allBook.jsp中添加新增連接

<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>

7.3、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>
    <%--BootStrap 美化界面--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

</head>
<body>

<div class="container">

    <%--row clearfix 清除浮動--%>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>添加書籍</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/book/addBook" method="post">

        <div class="form-group">
            <label for="bookName">書籍名稱</label>
            <input type="text" name="bookName" class="form-control" id="bookName" required>
        </div>

        <div class="form-group">
            <label for="bookCounts">書籍數量</label>
            <input type="text" name="bookCounts" class="form-control" id="bookCounts" required>
        </div>

        <div class="form-group">
            <label for="detail">書籍描述</label>
            <input type="text" name="detail" class="form-control" id="detail" required>
        </div>

        <input type="submit" class="form-control" value="添加">
    </form>

</div>

</body>
</html>

8、修改和刪除書籍

8.1、BookController 類編寫 ， 方法三：修改書籍和刪除書籍

    /**
     * 跳轉到修改頁面，並根據 id回顯數據
     *
     * @param id    Book id
     * @param model 傳給前端的數據
     * @return
     */
    @RequestMapping("/toUpdate/{bookId}")
    public String toUpdatePaper(@PathVariable("bookId") int id, Model model) {
        Books book = bookService.queryBookById(id);
        model.addAttribute("QBook", book);

        System.out.println(book);
        return "updateBook";
    }

    /**
     * 處理修改請求
     *
     * @param book 前端傳遞的對象
     * @return
     */
    @RequestMapping("/updateBook")
    public String updateBook(Books book) {
        int res = bookService.updateBook(book);
        System.out.println(res);
        if (res > 0) {
            System.out.println("updateBook=>執行成功" + book);
        }

        return "redirect:/book/allBook";
    }

    /**
     * 刪除一本書
     * @param id
     * @return
     */
    @RequestMapping("/deleteBook/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {

        bookService.deleteBook(id);
        return "redirect:/book/allBook";
    }

8.2、在allBook.jsp中新增修改和刪除連接

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>書籍列表</title>

    <%--BootStrap 美化界面--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

</head>
<body>

<div class="container">

    <%--row clearfix 清除浮動--%>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>書籍列表 —————— 顯示所有書籍</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-hover：    鼠標滑過時，變色
            table-striped：  每一行顯示不同的顏色
            --%>
            <table class="table table-hover table-striped">
                <thread>
                    <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>
                        <th>操作</th>
                    </tr>
                </thread>

                <tbody>
                <c:forEach var="book" items="${requestScope.get('list')}">
                    <tr>
                        <td>${book.bookID}</td>
                        <td>${book.bookName}</td>
                        <td>${book.bookCounts}</td>
                        <td>${book.detail}</td>
                        <td>
                            <%--傳統方式--%>
<%--
                            <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}">修改</a>
                            &nbsp; | &nbsp;
                            <a href="${pageContext.request.contextPath}/book/deleteBook?id=${book.bookID}">刪除</a>
--%>
                            <%--RestFul風格--%>
                            <a href="${pageContext.request.contextPath}/book/toUpdate/${book.bookID}">修改</a>
                                &nbsp; | &nbsp;
                            <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}">刪除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>

</div>

</body>
</html>

8.3、添加修改書籍頁面 updateBook.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改書籍</title>
    <%--BootStrap 美化界面--%>
    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">

</head>
<body>


<div class="container">

    <%--row clearfix 清除浮動--%>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>修改書籍</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/book/updateBook" method="post">

        <%--提交隱藏域，用於提交要修改書的 id--%>
        <input type="hidden" name="bookID" value="${QBook.bookID}">

        <div class="form-group">
            <label for="bookName">書籍名稱</label>
            <input type="text" name="bookName" class="form-control" id="bookName" value="${QBook.bookName}">
        </div>

        <div class="form-group">
            <label for="bookCounts">書籍數量</label>
            <input type="text" name="bookCounts" class="form-control" id="bookCounts" value="${QBook.bookCounts}">
        </div>

        <div class="form-group">
            <label for="detail">書籍描述</label>
            <input type="text" name="detail" class="form-control" id="detail" value="${QBook.detail}">
        </div>

        <input type="submit" class="form-control" value="修改">
    </form>

</div>

</body>
</html>

9、搜索功能

9.1、在allBook.jsp中添加查詢書籍功能

    <div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增書籍</a>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">查詢所有書籍</a>

        </div>

        <div class="col-md-8 column">
            <%--查詢書籍--%>
            <form action="${pageContext.request.contextPath}/book/queryBook" method="post" class="form-inline" style="float: right;">
                <span style="color: red;font-weight: bold;">${error}</span>
                <input type="text" class="form-control" name="queryBookName" placeholder="請輸入要查詢的書籍名稱"
                       style="width: 300px;">
                <input type="submit" class="btn btn-primary" value="查詢">
            </form>
        </div>

    </div>

9.2、在BookController類中編寫處理查詢書名的請求

/**
 * 根據書名查詢一本書
 *
 * @param queryBookName
 * @param model
 * @return
 */
@RequestMapping("/queryBook")
public String queryBook(String queryBookName, Model model) {
    List<Books> list = bookService.queryBookByName(queryBookName);

    // System.err.println(list);

    if (list.isEmpty()) {
        list = bookService.queryAllBook();
        model.addAttribute("error", "未找到！");
    }

    model.addAttribute("list", list);

    return "allBook";
}

9.3、編寫BookMapper接口

/**
 * 根據書名查詢一本書
 *
 * @param bookName
 * @return
 */
List<Books> queryBookByName(@Param("bookName") String bookName);

9.4、在BookMapper.xml編寫Sql

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

9.5、編寫BookServicer接口

/**
 * 根據書名查詢一本書
 *
 * @param bookName
 * @return
 */
List<Books> queryBookByName(String bookName);

9.6、編寫BookServicerImpl

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

10、項目結構：

lqBeoj.png

11、注意事項

在 web.xml 中使用總的Spring配置文件！Spring MVC的內置過濾器要設置它的 encoding 屬性！

lOzad0.png

CharacterEncodingFilter 源碼中的 encoding 屬性

lXpige.png

注意靜態資源過濾問題！

lOztLn.png

在項目的發布環境中添加lib依賴！

lOzYss.png

確保Spring Spring MVC 的配置文件在一個上下文中，將他們關聯在一起！

lOz8zQ.png

MapperScannerConfigurer

Mybatis MapperScannerConfigurer 自動掃描 將Mapper接口生成代理注入到Spring

lOzJMj.png


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