[springmvc]ssm框架整合超简单

9.ssm整合框架

此整合没有具体的业务，因为ssm整合最难的点就在于配置文件的整合，因此这里只详细记录配置文件的整合

• spring和dao整合将mybatis的配置文件的数据库连接和sqlsessionfactory的功能
• spring和service整合将业务层的事务和日志利用aop实现
• spring和mvc整合实现视图跳转

总之，spring这个大容器将所有的事情包揽，统一的控制

1.spring和dao

<?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
        https://www.springframework.org/schema/beans/spring-beans.xsd
      ">

    <!--整合mybatis的数据库 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/shop?useSSL=false&amp;useUnicode=true&amp;characterEncoding=utf-8"/>
        <property name="username" value="root"/>
        <property name="password" value="123123"/>
    </bean>

    <!--整合mybatis的SQLSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--绑定mybatis配置文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
        <!--只能用构造器注入 没有set方法 -->
        <constructor-arg index="0" ref="sqlSessionFactory"/>
    </bean>

 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" id="configurer">
     <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
     <property name="basePackage" value="mapper"/>
 </bean>

</beans>

<?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="STDOUT_LOGGING"/>
    </settings>
    <typeAliases>
        <package name="pojo"/>
    </typeAliases>

<!--整合给spring管理 不再需要这里声明-->
    <!--<mappers>-->
        <!--<mapper class="mapper.BookMapper"/>-->
    <!--</mappers>-->
</configuration>

2.spring和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:aop="http://www.springframework.org/schema/aop"
       xmlns:context="http://www.springframework.org/schema/context"
       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/aop
       http://www.springframework.org/schema/aop/spring-aop.xsd
       http://www.springframework.org/schema/tx
       http://www.springframework.org/schema/tx/spring-tx.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

    <!--将service的包扫描-->
    <context:component-scan base-package="service"/>
    <bean id="bookServiceImpl" class="service.BookServiceImpl">
        <property name="bookMapper" ref="bookMapper"/>
    </bean>
    <!--横切事务-->
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>

    <aop:config>

        <aop:pointcut id="serviceOperation"
                      expression="execution(*  mapper.BookMapper.*.*(..))"/>

        <aop:advisor pointcut-ref="serviceOperation" advice-ref="txAdvice"/>

    </aop:config>

</beans>

3.spring和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: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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

<!--mvc层 扫描包 开启注解和处理器支持-->
    <context:component-scan base-package="controller"/>
    <mvc:default-servlet-handler/>
    <mvc:annotation-driven/>
    <!--配置视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" id="viewResolver">
        <property name="suffix" value=".jsp"/>
        <property name="prefix" value="WEB-INF/jsp/"/>
    </bean>

    <context:component-scan base-package="controller"/>
</beans>

最后将这几个spring的配置文件导入到一个applicationContext的配置文件即可

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