[Java知识库]整合SSM（Mybatis-Spring-SpringMVC层）

环境：

• IDEA

• MySQL 5.7.19

• Tomcat 9

• Maven 3.6

（1）数据库环境

创建一个存放书籍数据的数据库表，需要注意是一个行模块进行执行，不要全部一起，会报错

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 ?

（2）新建一Maven项目！ssmbuild

（3）导入相关的pom依赖 ?

    <!--    依赖-->
    <dependencies>
        <!--Junit-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <!-- 数据库连接池 -->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.5</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>3.5.9</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.6</version>
        </dependency>

        <!--Spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.3.19</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.19</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.24</version>
        </dependency>
    </dependencies>

?（4）maven资源过滤设置

    <!--    静态资源导出问题-->
    <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>

（5）连接数据库 ?

设置时间区域（版本过低的需要！）

输入账户密码，测试是否成功！??

选择创建的数据库（ssmbuild）

?

（6）建立基本结构和配置框架 ?

• com.gt.pojo

• com.gt.mapper

• com.gt.service

• com.gt.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

（7）数据库配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver
# 如果使用的是MySQL8.0+，增加一个时区的配置； &serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

（8）在mybatis-config中配置别名 ?

<!-- 配置数据源，交给Spring去做-->
<typeAliases>
    <package name="com.gt.pojo"/>
</typeAliases>

（9）idea关联数据库 ?（若前面连接的时候关联就不需要管它）

（10）编写数据库表对应的实体类 Books

????????这里用到lombok插件，要提前把项目包导入pom当中

<!--        Lombok-->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.16.10</version>
</dependency>

（11）创建pojo中创建Books，编写有参无参构造

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

?左边可以查看构造出的函数，有有参、无参、toString（）方法等！

（12）编写dao层的mapper接口，只要有一个pojo下一步就是在dao层编写接口

后面在删除和查询一本书的时候需要加上@Param("bookID")?

package com.gt.dao;

import com.gt.pojo.Books;

import java.util.List;

public interface BookMapper {

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

    //    删除一本书
    int deleteBook(Books book);

    //    更新一本书
    int updateBook(Books books);

    //    查询一本书
    Books queryBook(int id);

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

}

（13）编写接口对应的Mapper.xml文件（BookMapper.xml），需要导入mybatis的包

记住创建了BookMapper接口后下一步骤就是创建BookMapper.xml文件！??

<?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.gt.dao.BookMapper">


</mapper>

（14）对照BookMapper接口在BookMapper.xml文件中进行编写

<?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.gt.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">
        updated ssmbuild.books
        set bookName=#{bookName},bookCount=#{bookCounts},delails=#{delail}
        where bookID=#{bookId}
    </update>

    <select id="queryBook" resultType="Books">
    select * from ssmbuild.books
    where bookID = #{bookId}
    </select>

    <select id="queryAllBook" resultType="Books">
        select * from ssmbuild.books
    </select>


</mapper>

记得删除和查询一本书都需要加上@Param("bookId")

（15）去mybatis-config.xml中记得注册 ?

<!--    注册！-->
    <mappers>
        <mapper class="com.gt.dao.BookMapper"/>
    </mappers>

（16）编写service业务层的接口和实现类

BookService.java

package com.gt.service;

import com.gt.pojo.Books;

import java.util.List;

public interface BookService {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(int id);

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

}

BookServiceImpl.java

package com.gt.service;

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

import java.util.List;

public class BookServiceImpl implements BookService{

//    service调用dao层：组合Dao
    private BookMapper bookMapper;
    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 books) {
        return bookMapper.updateBook(books);
    }

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

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

?

Spring层

（17）配置spring整合mybatis，我们这里数据源使用c3p0连接池，在resources中创建spring-dao.xml，添加到上一个就行

spring-dao.xml?

?

?

?（18）我们去编写spring整合mybatis的相关的配置文件 spring-dao.xml

?

• 前提是要导入c3p0的包

?

• ?在配置连接池的时候，要对应database.properties

?

?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.关联数据库库配置文件：database.properties-->
    <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="2"/>
        <!-- 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="configuration" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--    4.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dao包-->
        <property name="basePackage" value="com.gt.dao"/>
    </bean>


</beans>

?

（19）spring整合service层 spring-service.xml

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.扫描service下的包-->
    <context:component-scan base-package="com.gt.service"/>

    <!--    2.将我们的所有业务类，注入到Spring，可以通过配置，或者注解实现-->
    <bean id="BookServiceImpl" class="com.gt.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--    3.声明式事务配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--      注入数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--    4.aop事务支持-->

</beans>

?

如果bookMapper报错，证明三个xml文件没有关联起来可以通过配置applicationContext来配置 ?

?

加入@Service、@Autowired注入成功

SpringMVC层

?

（20）添加web项目

（21）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">

    <!--    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: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>

    <!--    乱码过滤-->
    <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-->
    <session-config>
        <session-timeout>15</session-timeout>
    </session-config>


</web-app>

?

（22）spring-mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/mvc
       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.gt.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>

（21）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-mvc.xml"/>


</beans>

总代码?

?

BookMapper：

package com.gt.dao;

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

import java.util.List;

public interface BookMapper {

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

    //    删除一本书
    int deleteBook(@Param("bookId") int id);

    //    更新一本书
    int updateBook(Books books);

    //    查询一本书
    Books queryBookById(@Param("bookId") int id);

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


}

?

BookMapper.xml :

<?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.gt.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">
        updated ssmbuild.books
        set bookName=#{bookName},bookCount=#{bookCounts},delails=#{delail}
        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>

?

Books：

package com.gt.pojo;


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

@Data
@NoArgsConstructor
@AllArgsConstructor
public class Books {

    private int bookID;
    private String bookName;
    private String bookCounts;
    private String detail;
}

?

BookService：

package com.gt.service;

import com.gt.pojo.Books;

import java.util.List;

public interface BookService {
    //增加一本书
    int addBook(Books books);

    //删除一本书
    int deleteBook(int id);

    //更新一本书
    int updateBook(Books books);

    //查询一本书
    Books queryBookById(int id);

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

}

BookServiceImpl：

package com.gt.service;

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

import java.util.List;

@Service
public class BookServiceImpl implements BookService{

//    service调用dao层：组合Dao
    @Autowired
    private BookMapper bookMapper;
    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 books) {
        return bookMapper.updateBook(books);
    }

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

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

?

?applicationContext：

<?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-mvc.xml"/>


</beans>

database.properties:?

jdbc.driver=com.mysql.jdbc.Driver
# 如果使用的是MySQL8.0+，增加一个时区的配置； &serverTimezone=Asia/Shanghai
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

mybatis-config：?

<?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>

    <!-- 配置数据源，交给Spring去做-->
    <typeAliases>
        <package name="com.gt.pojo"/>
    </typeAliases>

<!--    注册！-->
    <mappers>
        <mapper class="com.gt.dao.BookMapper"/>
    </mappers>

</configuration>

?

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.关联数据库库配置文件：database.properties-->
    <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="2"/>
        <!-- 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="configuration" value="classpath:mybatis-config.xml"/>
    </bean>

    <!--    4.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dao包-->
        <property name="basePackage" value="com.gt.dao"/>
    </bean>


</beans>

?

?spring-mvc:

<?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.gt.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>

?

spring-service:

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

    <!--    2.将我们的所有业务类，注入到Spring，可以通过配置，或者注解实现-->
    <bean id="BookServiceImpl" class="com.gt.service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>

    <!--    3.声明式事务配置-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--      注入数据源-->
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--    4.aop事务支持-->

</beans>

?