二、SSM的整合（Dao、Mybatis、Service、MVC、ApplicationContext）

一、整合总体结构

 

 

 

二、ApplicationContext（应用上下文）

        连接各（Dao、Mybatis、Service、MVC）xml文件

<?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>
    <import resource="classpath:spring-service.xml"></import>
    <import resource="spring-mvc.xml"></import>
</beans>

三、Dao（数据库层）

    连接数据库的配置（database）

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=false
jdbc.username=root
jdbc.password=123456

   spring-dao.xml文件配置

<?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:aop="http://www.springframework.org/schema/context"
       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
        http://www.springframework.org/schema/context/spring-context.xsd">

    <!--   1、 关联数据库配置文件database-->

    <context:property-placeholder location="classpath:database.properties"></context:property-placeholder>

    <!--   2、 建立连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"></property>
        <property name="jdbcUrl" value="${jdbc.url}"></property>
        <property name="user" value="${jdbc.username}"></property>
        <property name="password" value="${jdbc.password}"></property>
    </bean>

    <!--    3、关联sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!--        绑定Mybatis的配置文件-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <!--    4、配置dao接口扫描包，动态实现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"></property>

        <!--        扫描包并注入-->
        <property name="basePackage" value="dao"></property>
    </bean>


</beans>

四、Mybatis配置

<?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">
<!--mybatis文件-->
<configuration>

    <!--    配置数据库资源，交给spring去做-->

   <!--实体类绑定-->
    <typeAliases>
        <package name="pojo"/>
    </typeAliases>
    <!--    绑定sql语句映射文件-->
    <mappers>
        <mapper class="dao.BooksMapper"></mapper>
        <mapper class="dao.UserBooks"></mapper>
        <mapper class="dao.MarketMapper"></mapper>
    </mappers>


</configuration>

五、Service(服务层)

<?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"
       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">


    <!--   1、 扫描service的包-->
    <context:component-scan base-package="service"></context:component-scan>

    <!--    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="BooksServiceImpl" class="service.BooksServiceImpl">
        <property name="booksMapper" ref="booksMapper"></property>
    </bean>

    <bean id="UserService" class="service.UserServiceImpl">
        <property name="userBooks" ref="userBooks"></property>
    </bean>
<!--    MatketServiceImpl控制层的@Qualifier的bean引用变量 marketMapper服务层的dao引用的对象-->
    <bean id="MarketService" class="service.MatketServiceImpl">
        <property name="marketMapper" ref="marketMapper"></property>
    </bean>

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

    <!--    4、aop事务支持-->
</beans>

六、MVC(JavaMVC的配置)

<?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
        http://www.springframework.org/schema/context/spring-context.xsd">


    <!--   1、 扫描service的包-->
    <context:component-scan base-package="service"></context:component-scan>

    <!--    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="BooksServiceImpl" class="service.BooksServiceImpl">
        <property name="booksMapper" ref="booksMapper"></property>
    </bean>

    <bean id="UserService" class="service.UserServiceImpl">
        <property name="userBooks" ref="userBooks"></property>
    </bean>
<!--    MatketServiceImpl控制层的@Qualifier的bean引用变量 marketMapper服务层的dao引用的对象-->
    <bean id="MarketService" class="service.MatketServiceImpl">
        <property name="marketMapper" ref="marketMapper"></property>
    </bean>

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

    <!--    4、aop事务支持-->
</beans>