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dao layer
<!--配置Spring框架加载属性配置文件-->
<context:property-placeholder location="classpath:db.properties">
</context:property-placeholder>
<!--Spring整合Mybatis 开始--><!--配置数据库连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!--配置加载映射配置文件,创建mapper的代理类 Spring整合Mybatis相关类-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean" > <property name="dataSource" ref="dataSource"></property>
<property name="typeAliasesPackage" value="com.itcast.domain"></property>
</bean>
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itcast.dao"></property>
</bean>
<!--Spring整合Mybatis 结束-->
EmpMapper.xml:
<mapper namespace="com.itcast.dao.EmpMapper">
<!--编写查询所有的映射-->
<select id="findAll" resultType="emp">
select * from emp
</select>
</mapper>
Service layer
<!--开启Spring框架组件扫描-->
<context:component-scan base-package="com.itcast">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"></context:exclude-filter>
</context:component-scan>
<!-- Spring声明式事物控制 -->
<!-- 1. 配置事物管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 2. 配置事物通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
<!-- 4. 配置事物属性-->
<tx:attributes>
<tx:method name="find*" read-only="true" propagation="SUPPORTS"/>
<tx:method name="add*" read-only="false" propagation="REQUIRED"></tx:method>
<tx:method name="update*" read-only="false" propagation="REQUIRED" ></tx:method>
<tx:method name="delete*" read-only="false" propagation="REQUIRED" ></tx:method>
</tx:attributes>
</tx:advice>
<!-- 3. 配置事物AOP-->
<aop:config>
<!-- 3.1 配置切入点表达式 -->
<aop:pointcut id="txPointcut" expression="execution(* com.itcast.service.impl.*.*(..))"></aop:pointcut>
<!-- 3.2 配置事物的通知和切入点表达式的结合-->
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"></aop:advisor>
</aop:config>
<!--导入DAO配置文件-->
<import resource="classpath:applicationContext-dao.xml"></import>
web(controller) layer
<!--开启Spring框架组件扫描-->
<context:component-scan base-package="com.itcast.controller"></context:component-scan>
<!--配置SpringMVC-->
<bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:annotation-driven></mvc:annotation-driven>
<!--释放静态资源-->
<mvc:default-servlet-handler></mvc:default-servlet-handler>
web.xml 项目启动文件
<web-app>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-service.xml</param-value>
</context-param>
<!--配置编码过滤器-->
<filter>
<filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--加载Spring配置文件-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--配置前端控制器-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!--指定配置文件路径-->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-mvc.xml</param-value>
</init-param>
<!--配置启动时创建Serlvet-->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
apping>
dispatcherServlet
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