SpringMVC基础教程（3）--SSM框架整合

视频参考链接：【狂神说Java】SpringMVC最新教程IDEA版通俗易懂 p17-23

1、环境要求

环境：

• IDEA
• MySQL 5.1.47
• Tomcat 9
• Maven 3.9.9

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；

2、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');

3、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>4.13.2</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>0.9.5.5</version>
    </dependency>

    <dependency>
        <groupId>com.mchange</groupId>
        <artifactId>mchange-commons-java</artifactId>
        <version>0.2.19</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>2.1</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>3.5.19</version>
    </dependency>

    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.1.1</version>
    </dependency>

    <!--Spring-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.2.0.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>5.2.0.RELEASE</version>
    </dependency>
    <!--lombok-->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.36</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.lingbo.pojo

• com.lingbo.dao

• com.lingbo.service

• com.lingbo.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=false&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>

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

    <mappers>
        <mapper resource="com/lingbo/dao/BooksMapper.xml"/>
    </mappers>

</configuration>

4、编写数据库对应的实体类 com.lingbo.pojo.Books

使用lombok插件！

package com.lingbo.pojo;

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

@NoArgsConstructor
@AllArgsConstructor
@Data
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.lingbo.dao;

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

import java.util.List;

public interface BooksMapper {

    //增加一本Book
    int addBook(Books books);

    //根据id删除一本Book
    int deleteBookById(@Param("bookID") int id);

    //更新Book
    int updateBook(Books books);

    //根据id查询Book
    Books queryBookById(@Param("bookID") int id);

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

    //通过书籍名字查询信息
    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 Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.lingbo.dao.BooksMapper">

    <!--增加一本Book-->
    <insert id="addBook" parameterType="books">
        insert into ssmbuild.books (bookName, bookCounts, detail)
        values (#{bookName}, #{bookCounts}, #{detail});
    </insert>

    <!--根据id删除一本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Book-->
    <select id="queryBookById" parameterType="_int" resultType="books">
        select *
        from ssmbuild.books
        where bookID = #{bookID};
    </select>

    <!--查询全部Books，返回list集合-->
    <select id="queryAllBooks" resultType="books">
        select *
        from ssmbuild.books;
    </select>
    <!--通过书籍名字查询信息-->
    <select id="queryBookByName" resultType="books">
        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.lingbo.service;

import com.lingbo.pojo.Books;

import java.util.List;

//BookService:底下需要去实现,调用dao层
public interface BooksService {


    //增加一本Book
    int addBook(Books books);

    //根据id删除一本Book
    int deleteBookById(int id);

    //更新Book
    int updateBook(Books books);

    //根据id查询Book
    Books queryBookById(int id);

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

    //通过书籍名字查询信息
    Books queryBookByName(String bookName);

}

实现类：

package com.lingbo.service;

import com.lingbo.dao.BooksMapper;
import com.lingbo.pojo.Books;

import java.util.Collections;
import java.util.List;

public class BooksServiceImpl implements BooksService {
    //调用dao层的操作，设置一个set接口，方便Spring管理
    private BooksMapper booksMapper;

    public void setBooksMapper(BooksMapper booksMapper) {
        this.booksMapper = booksMapper;
    }

    @Override
    public int addBook(Books books) {
        return booksMapper.addBook(books);
    }

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

    @Override
    public int updateBook(Books books) {
        return booksMapper.updateBook(books);
    }

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

    @Override
    public List<Books> queryAllBooks() {
        return booksMapper.queryAllBooks();
    }

    @Override
    public Books queryBookByName(String bookName) {
        return booksMapper.queryBookByName(bookName);
    }
}

OK，到此，底层需求操作编写完毕！

5、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）
-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <!-- 配置连接池属性 -->
        <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MyBaties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.lingbo.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:jdbc="http://www.springframework.org/schema/jdbc"
       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
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/jdbc
        http://www.springframework.org/schema/jdbc/spring-jdbc.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">


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

    <!--BookServiceImpl注入到IOC容器中-->
    <bean id="BooksServiceImpl" class="com.lingbo.service.BooksServiceImpl">
        <property name="booksMapper" ref="booksMapper"/>
    </bean>

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

6、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-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
         http://www.springframework.org/schema/context/spring-context.xsd
         http://www.springframework.org/schema/mvc
         https://www.springframework.org/schema/mvc/spring-mvc.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.lingbo.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，暂时结束！Controller 和 视图层编写

1、BooksController 类编写 ， 方法一：查询全部书籍

@Controller
@RequestMapping("/books")
public class BooksController {

    @Autowired
    @Qualifier("BooksServiceImpl")
    private BooksService booksService;

    @RequestMapping("/allBooks")
    public String allBooks(Model model) {
        List<Books> books = booksService.queryAllBooks();
        model.addAttribute("list", 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}/books/allBooks">点击进入列表页</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="${pageContext.request.contextPath}/books/toAddBook">新增</a>
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/books/allBooks">显示全部书籍</a>
        </div>


        <div class="col-lg-8 column text-right">

            <%--查询书籍--%>
            <form action="${pageContext.request.contextPath}/books/queryBook" method="post" style="float: right;" class="form-inline">
                <span style="color: red;font-weight: bold;">${error}</span>

                <input type="text" name="queryBookName" placeholder="请输入要查询的书籍名称"
                       class="form-control"/>
                <input type="submit" value="查询" class="btn btn-primary" style="right: auto"/>
            </form>
        </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>书籍名字</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="${requestScope.get('list')}">
                    <tr>
                        <td>${book.getBookID()}</td>
                        <td>${book.getBookName()}</td>
                        <td>${book.getBookCounts()}</td>
                        <td>${book.getDetail()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/books/toUpdateBook?id=${book.getBookID()}">更改</a>
                            |
                            <a href="${pageContext.request.contextPath}/books/del/${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

@Controller
@RequestMapping("/books")
public class BooksController {

    @RequestMapping("/toAddBook")
    public String toAddBook() {
        return "addBook";
    }

    @RequestMapping("/addBook")
    public String addBook(Books books) {
        System.out.println(books);
        booksService.addBook(books);
        return "redirect:/books/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}/books/addBook" method="post">
        书籍名称：<input type="text" name="bookName"><br><br><br>
        书籍数量：<input type="text" name="bookCounts"><br><br><br>
        书籍详情：<input type="text" name="detail"><br><br><br>
       <input type="submit" value="添加">
     </form>

</div>

6、BookController 类编写 ， 方法三：修改书籍

@Controller
@RequestMapping("/books")
public class BooksController {

    @RequestMapping("/toUpdateBook")
    public String toUpdateBook(Model model, int id) {
        Books books = booksService.queryBookById(id);
        System.out.println(books);
        model.addAttribute("book", books);
        return "updateBook";
    }

    @RequestMapping("/updateBook")
    public String updateBook(Model model, Books book) {
        System.out.println(book);
        booksService.updateBook(book);
        Books books = booksService.queryBookById(book.getBookID());
        model.addAttribute("books", books);
        return "redirect:/books/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="${pageContext.request.contextPath}/books/updateBook" method="post">
       <input type="hidden" name="bookID" value="${book.getBookID()}"/>
        书籍名称：<input type="text" name="bookName" value="${book.getBookName()}"/>
        书籍数量：<input type="text" name="bookCounts" value="${book.getBookCounts()}"/>
        书籍详情：<input type="text" name="detail" value="${book.getDetail() }"/>
       <input type="submit" value="提交"/>
     </form>

</div>

8、BookController 类编写 ， 方法四：删除书籍

@Controller
@RequestMapping("/books")
public class BooksController {

    @RequestMapping("/del/{bookId}")
    public String deleteBook(@PathVariable("bookId") int id) {
        booksService.deleteBookById(id);
        return "redirect:/books/allBooks";
    }


}

9、BookController 类编写 ， 方法五：通过书名查询书籍

@Controller
@RequestMapping("/books")
public class BooksController {

    //查询书籍
    @RequestMapping("/queryBook")
    public String queryBook(String queryBookName, Model model) {
        Books books = booksService.queryBookByName(queryBookName);


        List<Books> booksList = new ArrayList<Books>();
        booksList.add(books);
        if (books == null){
            booksList = booksService.queryAllBooks();
            model.addAttribute("error","未查到");
        }
        model.addAttribute("list", booksList);
        return "allBooks";
    }

}

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！

项目结构图