SSM整合之图书增删改查

2023-11-23 23:46:04

整合SSM

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；

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！

<!--依赖：Junit，数据库驱动，连接池，servlet，jsp，mybatis，mybatis-spring，spring-->
<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.3.3</version>
    </dependency>
    <!--junit-->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13.1</version>
    </dependency>
    <!--数据库驱动-->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.49</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>2.0</version>
    </dependency>
    <dependency>
        <groupId>jstl</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency>

    <!--mybatis-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.6</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.3.2</version>
    </dependency>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.6</version>
    </dependency>
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.6</version>
    </dependency>

    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.16</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</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.kuang.pojo

  • com.kuang.dao

  • com.kuang.service

  • com.kuang.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>

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/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
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>
    <settings>
        <setting name="logImpl" value="LOG4J"/>
    </settings>
    <typeAliases>
        <package name="com.liu.pojo"/>
    </typeAliases>
    <mappers>
        <mapper resource="com/liu/dao/BookMapper.xml"/>
    </mappers>
</configuration>

4、编写数据库对应的实体类 com.kuang.pojo.Books

使用lombok插件！

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.liu.dao;

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

import java.util.List;

public interface BookMapper {
    //增加一本书
    void addBook(Books books);
    //删除一本书
    void deleteById(@Param("id") int id);
    //更新一本书
    void updateBook(Books books);
    //查询一本书
    Books queryBookById(@Param("id") int id);

    //查询全部的书
    List<Books> queryAllBook();

    Books queryBookByName(@Param("BookName") String BookName);
}

6、编写接口对应的 Mapper.xml 文件。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.liu.dao.BookMapper">
    <insert id="addBook" parameterType="books">
        insert into ssmbuild.books  (bookName,bookCounts,detail) values (#{bookName},#{bookCounts},#{detail})
    </insert>
    <delete id="deleteById" parameterType="_int">
        delete from ssmbuild.books where bookID = #{id}
    </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" parameterType="_int">
        select * from ssmbuild.books where bookID = #{id};
    </select>
    <select id="queryAllBook" resultType="books">
        select * from ssmbuild.books;
    </select>
    <select id="queryBookByName" resultType="com.liu.pojo.Books" parameterType="string">
        select * from ssmbuild.books where bookName =#{BookName};
    </select>

</mapper>

7、编写Service层的接口和实现类

接口：

package com.liu.service;

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

import java.util.List;

public interface BookService {
    //增加一本书
    void addBook(Books books);
    //删除一本书
    void deleteById(int id);
    //更新一本书
    void 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);
}

实现类：

package com.liu.service.impl;

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

import javax.annotation.Resource;
import java.util.List;

public class BookServiceImpl implements BookService {

    private BookMapper bookMapper;

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

    public void addBook(Books books) {
        bookMapper.addBook(books);
    }

    public void deleteById(int id) {
        bookMapper.deleteById(id);
    }

    public void updateBook(Books books) {
        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);
    }
}

OK，到此，底层需求操作编写完毕！

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">
    <!--1.关联数据库配置文件-->
    <context:property-placeholder location="classpath:database.properties"/>

    <!--2.连接池
    dbcp:半自动化操作，不能自动连接
    c3p0:自动化操作（自动化的加载配置文件，并且可以自动设置到对象中！）
    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.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>

    <!--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"/>
        <!--要扫描的包-->
        <property name="basePackage" value="com.liu.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"
       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.liu.service"/>

    <!--2、将我们所有的业务类，注入到spring，，可以通过配置，或者注解实现-->
    <bean id="BookServiceImpl" class="com.liu.service.impl.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--3、声明式事务-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--注册事务源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--配置事务的类-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--4、aop事务支持！-->
    <aop:config>
        <aop:pointcut id="pointcut" expression="execution(* com.liu.dao.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
    </aop:config>
</beans>

Spring层搞定！再次理解一下，Spring就是一个大杂烩，一个容器！对吧！

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>DispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <!--一定要注意:我们这里加载的是总的配置文件，之前被这里坑了！-->  
            <param-value>classpath:applicationContext.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</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-controller.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 https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    <!--1、注解驱动-->
    <mvc:annotation-driven/>
    <!--2、静态资源过滤-->
    <mvc:default-servlet-handler/>
    <!--3、扫描包：Controller-->
    <context:component-scan base-package="com.liu.controller"/>
    <!--4、视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

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

配置文件，暂时结束！Controller 和 视图层编写

1、BookController 类编写 ， 方法一：查询全部书籍

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;

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

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

2、编写首页 index.jsp

<%--
  Created by IntelliJ IDEA.
  User: 66473
  Date: 2021/2/8
  Time: 16:08
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>首页</title>
    <style>
      a{
        text-decoration: none;
        color: black;
        font-size: 18px;
      }
      h3{
        text-align: center;
        background: red;
        width: 180px;
        height: 38px;
        margin: 100px auto;
        line-height: 38px;
        border-radius: 5px;
      }
    </style>
  </head>
  <body>
  <h3>
    <a href="${pageContext.request.contextPath}/book/allBook">进入书籍页面</a>
  </h3>
  </body>
</html>

3、书籍列表页面 allbook.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
    Created by IntelliJ IDEA.
    User: 66473
        Date: 2021/2/8
            Time: 16:30
                To change this template use File | Settings | File Templates.
                --%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
    <head>
        <title>Title</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-12 column">
                    <div class="page-header">
                        <h1>
                            <small>书籍列表 ----- 显示所有书籍</small>
                        </h1>
                    </div>
                </div>
                <div class="row">
                    <div class="col-md-4 column">
                        <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/toAddBook">新增书籍</a>
                        <a class="btn btn-primary" href="${pageContext.request.contextPath}/book/allBook">显示全部书籍</a>
                    </div>
                    <div class="col-md-4 column"></div>
                    <div class="col-md-4 column">
                        <form action="${pageContext.request.contextPath}/book/queryBook" class="form-inline" method="post" style="float: right">
                            <h3 style="color: red;font-size: 12px">${error}</h3>
                            <input type="text" class="form-control" style="display: inline" placeholder="请输入要查询的书籍名称" name="queryBookName">
                            <input type="submit" value="查询" class="btn btn-primary">
                        </form>
                    </div>
                </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="${msg}">
                                <tr>
                                    <td>${book.bookID}</td>
                                    <td>${book.bookName}</td>
                                    <td>${book.bookCounts}</td>
                                    <td>${book.detail}</td>
                                    <td>
                                        <a href="${pageContext.request.contextPath}/book/toUpdate?id=${book.bookID}" class="btn btn-warning">修改</a>
                                        &nbsp; | &nbsp;
                                        <a href="${pageContext.request.contextPath}/book/deleteBook/${book.bookID}" class="btn btn-danger">删除</a>
                                    </td>
                                </tr>
                            </c:forEach>
                        </tbody>
                    </table>
                </div>
            </div>
        </div>
    </body>
</html>

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 toAddPaper(){
    return "addBook";
}

//添加书籍的请求
@RequestMapping("addBook")
public String addBook(Books books){
    bookService.addBook(books);
    return "redirect:/book/allBook";
}

5、添加书籍页面：addBook.jsp

<%--
  Created by IntelliJ IDEA.
  User: 66473
  Date: 2021/2/9
  Time: 6:29
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</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-12 column">
            <div class="page-header">
                <h1>
                    <small>新增书籍</small>
                </h1>
            </div>
        </div>

    </div>
    <form action="${pageContext.request.contextPath}/book/addBook" method="post">
        <div class="form-group">
            <label >书籍名称：</label>
            <input type="text" name="bookName" class="form-control" required >
        </div>
        <div class="form-group">
            <label >书籍数量：</label>
            <input type="text" name="bookCounts" class="form-control" required>
        </div>
        <div class="form-group">
            <label >书籍描述：</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>

6、BookController 类编写 ， 方法三：修改书籍

//跳转到修改页面
@RequestMapping("toUpdate")
public String toUpdatePaper(int id,Model model){
    Books books = bookService.queryBookById(id);
    model.addAttribute("QBook",books);
    return "updateBook";
}

//修改书籍
@RequestMapping("updateBook")
public String updateBook(Books books){
    bookService.updateBook(books);
    return "redirect:/book/allBook";
}

7、修改书籍页面 updateBook.jsp

<%--
    Created by IntelliJ IDEA.
    User: 66473
        Date: 2021/2/9
            Time: 7:06
                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</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-12 column">
                    <div class="page-header">
                        <h1>
                            <small>修改书籍</small>
                        </h1>
                    </div>
                </div>

            </div>
            <form action="${pageContext.request.contextPath}/book/updateBook" method="post">
                <input type="hidden" name="bookID" value="${QBook.bookID}">
                <div class="form-group">
                    <label >书籍名称：</label>
                    <input type="text" name="bookName" class="form-control" value="${QBook.bookName}" required >
                </div>
                <div class="form-group">
                    <label >书籍数量：</label>
                    <input type="text" name="bookCounts" class="form-control" value="${QBook.bookCounts}" required>
                </div>
                <div class="form-group">
                    <label >书籍描述：</label>
                    <input type="text" name="detail" class="form-control" value="${QBook.detail}" required>
                </div>
                <div class="form-group">
                    <input type="submit" class="form-control" value="修改">
                </div>
            </form>

        </div>
    </body>
</html>

8、BookController 类编写 ， 方法四：删除书籍

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

9、查询书籍

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

配置Tomcat，进行运行！

到目前为止，这个SSM项目整合已经完全的OK了，可以直接运行进行测试！这个练习十分的重要，大家需要保证，不看任何东西，自己也可以完整的实现出来！

项目结构图
SSM整合之图书增删改查项目效果图
SSM整合之图书增删改查SSM整合之图书增删改查

小结及展望

这个是同学们的第一个SSM整合案例，一定要烂熟于心！

SSM框架的重要程度是不言而喻的，学到这里，大家已经可以进行基本网站的单独开发。但是这只是增删改查的基本操作。可以说学到这里，大家才算是真正的步入了后台开发的门。也就是能找一个后台相关工作的底线。

或许很多人，工作就做这些事情，但是对于个人的提高来说，还远远不够！

前路漫漫，认真坚持最重要！

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